Capital Stock - Dividends Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Equity [Abstract]
Fixed (in dollars per share)	$ 0.15	$ 0.15	$ 0.11	$ 0.10	$ 0.30	$ 0.21
Variable (in dollars per share)	0.45	0.41	0	0	0.86	0
Total (in dollars per share)	$ 0.60	$ 0.56	$ 0.11	$ 0.10	$ 1.16	$ 0.21
Total Dividends Paid (In millions)	$ 484	$ 455	$ 44	$ 40	$ 939	$ 84