{"cik":57183,"taxonomy":"us-gaap","tag":"OtherAssetsCurrent","label":"Other Assets, Current","description":"Amount of current assets classified as other.","entityName":"Spire Missouri Inc.","units":{"USD":[{"end":"2021-12-31","val":49900000,"accn":"0001437749-23-011050","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-04-26","frame":"CY2021Q4I"},{"end":"2022-09-30","val":122700000,"accn":"0001437749-23-011050","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-04-26","frame":"CY2022Q3I"},{"end":"2022-12-31","val":145200000,"accn":"0001437749-23-011050","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-04-26","frame":"CY2022Q4I"}]}}