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Capital Transactions - Dividends (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
May 06, 2022
Feb. 03, 2022
May 06, 2021
Feb. 04, 2021
Mar. 31, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Class of Stock [Line Items]                
Dividends per common share (in dollars per share)   $ 0.47   $ 0.47 $ 0.47 $ 0.47    
Cash dividend payment     $ 365       $ 367 $ 365
Accrued Liabilities, Current                
Class of Stock [Line Items]                
Cash dividend payment $ 367