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Debt - Revolving Credit Facility (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Line of Credit Facility [Line Items]    
Current borrowing capacity under line of credit $ 1,000  
Maximum borrowing capacity for line of credit facility 1,250  
Line of credit borrowings outstanding 0 $ 0
Outstanding letters of credit issued against line of credit facility 1 1
American Enterprise Investment Services, Inc.    
Line of Credit Facility [Line Items]    
Maximum borrowing capacity for line of credit facility 500  
Line of credit borrowings outstanding $ 0 $ 0