Capital Stock - Dividends Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity [Abstract]
Fixed (in dollars per share)	$ 0.15	$ 0.15	$ 0.15	$ 0.11	$ 0.11	$ 0.10	$ 0.45	$ 0.32
Variable (in dollars per share)	0.50	0.45	0.41	0	0	0	1.36	0
Total (in dollars per share)	$ 0.65	$ 0.60	$ 0.56	$ 0.11	$ 0.11	$ 0.10	$ 1.81	$ 0.32
Total Dividends Paid (In millions)	$ 519	$ 484	$ 455	$ 44	$ 44	$ 40	$ 1,458	$ 128