Capital Transactions - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions					3 Months Ended		9 Months Ended
	May 06, 2022	Feb. 03, 2022	May 06, 2021	Feb. 04, 2021	Mar. 31, 2022	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity [Abstract]
Dividends per common share (in dollars per share)		$ 0.47		$ 0.47	$ 0.47	$ 0.47
Cash dividend payment	$ 367		$ 365				$ 367	$ 365