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Shareholders' Equity And Net Income Per Share Dividends (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Mandatory convertible preferred share cumulative dividends $ 15       $ 15     $ 47 $ 47  
Preferred Stock                    
Preferred Stock, Dividends, Per Share, Cash Paid $ 1.375 $ 1.375 $ 1.375 $ 1.375 $ 1.375 $ 1.375 $ 1.375 $ 4.125   $ 5.500
Mandatory convertible preferred share cumulative dividends $ 15 $ 16 $ 16 $ 16 $ 15 $ 16 $ 16 $ 47   $ 63