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Cash Equivalents, and Short-term Investments","description":"Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.","units":{"USD":[{"end":"2019-12-31","val":801000000,"accn":"0001628280-20-007419","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-11"},{"end":"2019-12-31","val":801000000,"accn":"0001628280-20-012315","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-10"},{"end":"2019-12-31","val":801000000,"accn":"0001628280-20-015884","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-06","frame":"CY2019Q4I"},{"end":"2020-03-31","val":1251900000,"accn":"0001628280-20-007419","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-11","frame":"CY2020Q1I"},{"end":"2020-06-30","val":1479300000,"accn":"0001628280-20-012315","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-10","frame":"CY2020Q2I"},{"end":"2020-09-30","val":1055400000,"accn":"0001628280-20-015884","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-06","frame":"CY2020Q3I"},{"end":"2020-12-31","val":4243300000,"accn":"0001628280-21-009489","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-07"},{"end":"2020-12-31","val":4243300000,"accn":"0001628280-21-016020","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-06"},{"end":"2020-12-31","val":4243300000,"accn":"0001628280-21-022427","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-09","frame":"CY2020Q4I"},{"end":"2021-03-31","val":5456300000,"accn":"0001628280-21-009489","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-07","frame":"CY2021Q1I"},{"end":"2021-06-30","val":5765700000,"accn":"0001628280-21-016020","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-06","frame":"CY2021Q2I"},{"end":"2021-09-30","val":8133600000,"accn":"0001628280-21-022427","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-09","frame":"CY2021Q3I"}]}},"CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents":{"label":"Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents","description":"Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest 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Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect","description":"Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest 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:"0001628280-21-016020","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-06"},{"start":"2021-01-01","end":"2021-09-30","val":3890300000,"accn":"0001628280-21-022427","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-09"},{"start":"2021-01-01","end":"2021-12-31","val":6346000000,"accn":"0001628280-22-004389","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-01","frame":"CY2021"}]}},"CashDivestedFromDeconsolidation":{"label":"Cash Divested from Deconsolidation","description":"Reduction in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash.","units":{"USD":[{"start":"2007-01-01","end":"2007-12-31","val":0,"accn":"0001193125-10-044584","fy":2009,"fp":"FY","form":"10-K","filed":"2010-03-01","frame":"CY2007"},{"start":"2008-01-01","end":"2008-06-30","val":0,"accn":"0001193125-09-170393","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-10"},{"start":"2008-01-01","end":"2008-09-30","val":0,"accn":"0001193125-09-229024","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-09"},{"start":"2008-01-01","end":"2008-12-31","val":20700000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2008"},{"start":"2008-01-01","end":"2008-12-31","val":20700000,"accn":"0001193125-10-044584","fy":2009,"fp":"FY","form":"10-K","filed":"2010-03-01"},{"start":"2009-01-01","end":"2009-03-31","val":8900000,"accn":"0001193125-10-114443","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-05-10","frame":"CY2009Q1"},{"start":"2009-01-01","end":"2009-06-30","val":16200000,"accn":"0001193125-10-183054","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09"},{"start":"2009-01-01","end":"2009-06-30","val":16200000,"accn":"0001193125-09-170393","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-10"},{"start":"2009-01-01","end":"2009-09-30","val":16200000,"accn":"0001193125-10-253803","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09"},{"start":"2009-01-01","end":"2009-09-30","val":16200000,"accn":"0001193125-09-229024","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-09"},{"start":"2008-12-31","end":"2009-12-31","val":16200000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2009"},{"start":"2009-01-01","end":"2009-12-31","val":16200000,"accn":"0001193125-10-044584","fy":2009,"fp":"FY","form":"10-K","filed":"2010-03-01"}]}},"CashDividends":{"label":"Cash Dividends (Deprecated 2009-01-31)","description":"Cash dividend declared by an entity to shareholders during the period. This element includes paid and unpaid dividends declared during the period.","units":{"USD":[{"start":"2008-01-01","end":"2008-06-30","val":94200000,"accn":"0001193125-09-170393","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-10"},{"start":"2009-01-01","end":"2009-06-30","val":101300000,"accn":"0001193125-09-170393","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-10"}]}},"CashDividendsPaidToParentCompany":{"label":"SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Subsidiaries and Equity Method Investees","description":"This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50% or less owned persons accounted for using the equity method.","units":{"USD":[{"start":"2008-12-31","end":"2009-12-31","val":0,"accn":"0001193125-12-089553","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-29","frame":"CY2009"},{"start":"2008-12-31","end":"2009-12-31","val":0,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01"},{"start":"2009-12-31","end":"2010-12-31","val":0,"accn":"0001193125-13-087415","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-01","frame":"CY2010"},{"start":"2009-12-31","end":"2010-12-31","val":0,"accn":"0001193125-12-089553","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-29"},{"start":"2009-12-31","end":"2010-12-31","val":0,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01"},{"start":"2010-12-31","end":"2011-12-31","val":160000000,"accn":"0001193125-13-087415","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-01","frame":"CY2011"},{"start":"2010-12-31","end":"2011-12-31","val":160000000,"accn":"0001193125-12-089553","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-29"},{"start":"2011-01-01","end":"2011-12-31","val":160000000,"accn":"0001193125-14-079583","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-03"},{"start":"2012-01-01","end":"2012-12-31","val":315000000,"accn":"0001193125-14-079583","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-03","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":315000000,"accn":"0001193125-13-087415","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-01"},{"start":"2013-01-01","end":"2013-12-31","val":232000000,"accn":"0001193125-14-079583","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-03","frame":"CY2013"}]}},"CashFlowHedgeGainLossReclassifiedToEarningsNet":{"label":"Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net (Deprecated 2013-01-31)","description":"The amount of net gains or losses on a cash flow hedge reclassified in the period to earnings from accumulated other comprehensive income.","units":{"USD":[{"start":"2008-01-01","end":"2008-12-31","val":2700000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2008"},{"start":"2008-12-31","end":"2009-12-31","val":-13700000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2009"},{"start":"2009-12-31","end":"2010-12-31","val":-13400000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2010"}]}},"CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations":{"label":"Cash Provided by (Used in) Operating Activities, Discontinued Operations","description":"Amount of cash inflow (outflow) of operating activities of discontinued operations. 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Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).","units":{"USD":[{"end":"2009-12-31","val":1700000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2009Q4I"},{"end":"2010-12-31","val":15400000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01"},{"end":"2010-12-31","val":15400000,"accn":"0001193125-12-089553","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-29","frame":"CY2010Q4I"},{"end":"2011-12-31","val":56400000,"accn":"0001193125-12-089553","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-29"},{"end":"2011-12-31","val":56400000,"accn":"0001193125-13-087415","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-01","frame":"CY2011Q4I"},{"end":"2016-12-31","val":256100000,"accn":"0001193125-17-065121","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-01"},{"end":"2016-12-31","val":256100000,"accn":"0001193125-18-067489","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-01","frame":"CY2016Q4I"},{"end":"2018-12-31","val":54200000,"accn":"0001193125-19-060912","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01"},{"end":"2018-12-31","val":54200000,"accn":"0001628280-20-002693","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02","frame":"CY2018Q4I"},{"end":"2019-12-31","val":6800000,"accn":"0001628280-20-002693","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-02"},{"end":"2019-12-31","val":6800000,"accn":"0001628280-21-003563","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-01","frame":"CY2019Q4I"},{"end":"2020-12-31","val":1200000,"accn":"0001628280-21-003563","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-01"},{"end":"2020-12-31","val":1200000,"accn":"0001628280-22-004389","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-01","frame":"CY2020Q4I"},{"end":"2021-12-31","val":500000,"accn":"0001628280-22-004389","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-01","frame":"CY2021Q4I"}]}},"FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate":{"label":"Federal Home Loan Bank, Advance, Maturity, Year Four","description":"Amount of advance from Federal Home Loan Bank (FHLBank) maturing in fourth fiscal year following current fiscal year. 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This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect 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Excludes loans and leases covered under loss sharing agreements.","units":{"USD":[{"end":"2008-12-31","val":4226400000,"accn":"0001193125-10-044584","fy":2009,"fp":"FY","form":"10-K","filed":"2010-03-01","frame":"CY2008Q4I"},{"end":"2008-12-31","val":4226400000,"accn":"0001193125-09-229024","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-09"},{"end":"2008-12-31","val":4226400000,"accn":"0001193125-09-170393","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-10"},{"end":"2009-06-30","val":4094600000,"accn":"0001193125-09-170393","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-10","frame":"CY2009Q2I"},{"end":"2009-09-30","val":4011400000,"accn":"0001193125-09-229024","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-09","frame":"CY2009Q3I"},{"end":"2009-12-31","val":4042500000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2009Q4I"},{"end":"2009-12-31","val":4042500000,"accn":"0001193125-10-253803","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09"},{"end":"2009-12-31","val":4042500000,"accn":"0001193125-10-183054","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09"},{"end":"2009-12-31","val":4042500000,"accn":"0001193125-10-114443","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-05-10"},{"end":"2009-12-31","val":4042500000,"accn":"0001193125-10-044584","fy":2009,"fp":"FY","form":"10-K","filed":"2010-03-01"},{"end":"2010-03-31","val":5178300000,"accn":"0001193125-10-114443","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-05-10","frame":"CY2010Q1I"},{"end":"2010-06-30","val":5049800000,"accn":"0001193125-10-183054","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09","frame":"CY2010Q2I"},{"end":"2010-09-30","val":5070700000,"accn":"0001193125-10-253803","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09","frame":"CY2010Q3I"},{"end":"2010-12-31","val":5196000000,"accn":"0001193125-11-134227","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-10","frame":"CY2010Q4I"},{"end":"2010-12-31","val":5196000000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01"},{"end":"2011-03-31","val":6046700000,"accn":"0001193125-11-134227","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-10","frame":"CY2011Q1I"}]}},"LoansAndLeasesReceivableCommercialNetOfDeferredIncome":{"label":"Loans and Leases Receivable, Commercial, Net of Deferred Income (Deprecated 2016-01-31)","description":"Reflects the net carrying amount of commercial loans and leases held in portfolio, after deducting deferred income, but before deducting the allowance for losses on commercial loans and leases.","units":{"USD":[{"end":"2010-12-31","val":5196000000,"accn":"0001193125-11-216402","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09"},{"end":"2010-12-31","val":5196000000,"accn":"0001193125-11-304637","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"end":"2010-12-31","val":5196000000,"accn":"0001193125-12-089553","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-29","frame":"CY2010Q4I"},{"end":"2011-06-30","val":6074100000,"accn":"0001193125-11-216402","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09","frame":"CY2011Q2I"},{"end":"2011-09-30","val":7262500000,"accn":"0001193125-11-304637","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09","frame":"CY2011Q3I"},{"end":"2011-12-31","val":7382000000,"accn":"0001193125-12-089553","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-29","frame":"CY2011Q4I"},{"end":"2015-12-31","val":20750800000,"accn":"0001193125-16-585535","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-10","frame":"CY2015Q4I"},{"end":"2016-03-31","val":20731300000,"accn":"0001193125-16-585535","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-10","frame":"CY2016Q1I"}]}},"LoansAndLeasesReceivableConsumer":{"label":"Loans and Leases Receivable, Gross, Consumer (Deprecated 2016-01-31)","description":"Amount before allowance of consumer loans, including, but not limited to, mortgage, home equity, vehicles, credit card, installment, and lease financing. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.","units":{"USD":[{"end":"2008-12-31","val":2227400000,"accn":"0001193125-10-044584","fy":2009,"fp":"FY","form":"10-K","filed":"2010-03-01","frame":"CY2008Q4I"},{"end":"2008-12-31","val":2227400000,"accn":"0001193125-09-229024","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-09"},{"end":"2008-12-31","val":2227400000,"accn":"0001193125-09-170393","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-10"},{"end":"2009-06-30","val":2273700000,"accn":"0001193125-09-170393","fy":2009,"fp":"Q2","form":"10-Q","filed":"2009-08-10","frame":"CY2009Q2I"},{"end":"2009-09-30","val":2270400000,"accn":"0001193125-09-229024","fy":2009,"fp":"Q3","form":"10-Q","filed":"2009-11-09","frame":"CY2009Q3I"},{"end":"2009-12-31","val":2245000000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2009Q4I"},{"end":"2009-12-31","val":2245000000,"accn":"0001193125-10-253803","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09"},{"end":"2009-12-31","val":2245000000,"accn":"0001193125-10-183054","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09"},{"end":"2009-12-31","val":2245000000,"accn":"0001193125-10-114443","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-05-10"},{"end":"2009-12-31","val":2245000000,"accn":"0001193125-10-044584","fy":2009,"fp":"FY","form":"10-K","filed":"2010-03-01"},{"end":"2010-03-31","val":2222600000,"accn":"0001193125-10-114443","fy":2010,"fp":"Q1","form":"10-Q","filed":"2010-05-10","frame":"CY2010Q1I"},{"end":"2010-06-30","val":2197000000,"accn":"0001193125-10-183054","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09","frame":"CY2010Q2I"},{"end":"2010-09-30","val":2176500000,"accn":"0001193125-10-253803","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09","frame":"CY2010Q3I"},{"end":"2010-12-31","val":2177900000,"accn":"0001193125-11-134227","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-10","frame":"CY2010Q4I"},{"end":"2010-12-31","val":2177900000,"accn":"0001193125-11-052040","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01"},{"end":"2011-03-31","val":2127100000,"accn":"0001193125-11-134227","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-10","frame":"CY2011Q1I"}]}},"LoansAndLeasesReceivableConsumerHomeEquity":{"label":"Loans and Leases Receivable, Gross, Consumer, Home Equity (Deprecated 2019-01-31)","description":"Amount before allowance of revolving, open-end loan, extended under a line of credit and secured by the borrower's residential property. 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Excludes subordinated loans such as home equity lines of credit and loans and leases covered under loss sharing 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be able to collect all amounts due according to the contractual terms of the loan agreement, or will not recover the previously reported carrying amount of the 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