Shareholders' Equity And Net Income Per Share Dividends (Details) - Preferred Shares - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						6 Months Ended	12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Dec. 31, 2022
Preferred Stock, Dividends, Per Share, Cash Paid	$ 1.375	$ 1.375	$ 1.375	$ 1.375	$ 1.375	$ 1.375	$ 2.750	$ 5.500
Mandatory convertible preferred share cumulative dividends	$ 16	$ 16	$ 16	$ 15	$ 16	$ 16	$ 32	$ 63