CONSOLIDATED STATEMENT OF SHAREHOLDERS EQUITY (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Stockholders' Equity [Abstract]
Tax effect of pension liability and postretirement adjustment	$ (4)	$ (9)	$ (8)
Cash dividends declared, per share	$ 3.12	$ 3.04	$ 2.96
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax	$ (1)	$ 1	$ (1)