Capital Stock (Cash Dividend Activity) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Dividends, Cash [Abstract]
Declaration Date	Oct. 18, 2022	Jul. 19, 2022	Apr. 19, 2022	Jan. 25, 2022	Oct. 19, 2021	Jul. 20, 2021	Apr. 20, 2021	Jan. 26, 2021
Record Date	Dec. 05, 2022	Sep. 09, 2022	Jun. 10, 2022	Mar. 10, 2022	Dec. 03, 2021	Sep. 10, 2021	Jun. 10, 2021	Mar. 10, 2021
Payment Date	Dec. 21, 2022	Sep. 23, 2022	Jun. 24, 2022	Mar. 25, 2022	Dec. 21, 2021	Sep. 24, 2021	Jun. 25, 2021	Mar. 25, 2021
Cash Dividend per Share	$ 1.28	$ 1.28	$ 1.28	$ 1.28	$ 1.13	$ 1.13	$ 1.13	$ 1.13
Total	$ 305	$ 306	$ 309	$ 309	$ 273	$ 276	$ 278	$ 277	$ 1,229	$ 1,104	$ 954