Condensed Consolidated Statements of Changes in Shareholders’ Equity (Parenthetical) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2023 USD ($) $ / shares	Mar. 31, 2023 dividend	Sep. 30, 2022 USD ($) $ / shares	Mar. 31, 2022 dividend	Sep. 30, 2023 USD ($) $ / shares	Sep. 30, 2022 USD ($) $ / shares	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in dollars per share) | $ / shares	$ 0.48		$ 0.47		$ 1.91	$ 1.86
Accumulated other comprehensive loss, cumulative translation losses	$ 3,458		$ 3,545		$ 3,458	$ 3,545	$ 3,381	$ 3,491	$ 3,398	$ 3,349
Accumulated other comprehensive income (loss), unrecognized retirement plan and other retiree benefit costs	$ 586		$ 717		$ 586	$ 717	$ 618	$ 631	$ 1,015	$ 1,044
Number of dividends declared per quarter | dividend		2		2