CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 493	$ 293	$ 860	$ 496
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	[1]	(66)	23	(49)	28
Fixed price diesel swaps		0	0	3	1
Other comprehensive (loss) income		(66)	23	(46)	29
Comprehensive income (loss)	[1]	$ 427	$ 316	$ 814	$ 525

[1] There were no material reclassifications from accumulated other comprehensive loss reflected in other comprehensive income (loss) during 2022 or 2021. There was no material tax impact related to the foreign currency translation adjustments. We have historically considered the undistributed earnings of our foreign subsidiaries to be indefinitely reinvested, and, accordingly, no taxes were provided on such earnings prior to 2020. In 2020 and 2021, we identified cash in our foreign operations in excess of near-term working capital needs that could no longer be considered indefinitely reinvested. As a result, our prior assertion that all undistributed earnings of our foreign subsidiaries should be considered indefinitely reinvested changed. In 2021, we remitted $203 of cash from foreign operations (such amount represents the cumulative amount of identified cash in our foreign operations in excess of near-term working capital needs). We continue to expect that the remaining balance of our undistributed foreign earnings will be indefinitely reinvested. If we determine that all or a portion of such foreign earnings are no longer indefinitely reinvested, we may be subject to additional foreign withholding taxes and U.S. state income taxes. There were no material taxes associated with other comprehensive income (loss) during 2022 or 2021.