Capital Stock (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended				6 Months Ended	12 Months Ended
	Jul. 28, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Dec. 31, 2021	Dec. 09, 2021
Equity [Abstract]
Stock repurchase program, authorized amount								$ 3,000
Common stock repurchased		$ 250	$ 350	$ 298	$ 12	$ 600	$ 950
Subsequent Event [Line Items]
Common stock, dividends, per share, declared (in dollars per share)		$ 0.22				$ 0.44
Subsequent Event
Subsequent Event [Line Items]
Common stock, dividends, per share, declared (in dollars per share)	$ 0.22