CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) $ in Millions		3 Months Ended
		Mar. 31, 2022 USD ($) Dividend $ / shares	Mar. 31, 2021 USD ($) Dividend $ / shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share (in dollars per share) | $ / shares	[1]	$ 0.92	$ 0.89
Accumulated other comprehensive loss, cumulative translation losses		$ 3,269	$ 3,313	$ 3,349	$ 3,158
Accumulated other comprehensive income (loss), unrecognized retirement plan and other retiree benefit costs		$ 1,030	$ 1,176	$ 1,044	$ 1,178
Number of dividends declared per quarter | Dividend		2	2

[1] Two dividends were declared in each of the first quarters of 2022 and 2021.