CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income		$ 591	$ 493	$ 1,042	$ 860
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	[1]	23	(66)	24	(49)
Fixed price diesel swaps		0	0	(1)	3
Other comprehensive (loss) income (1)	[1]	23	(66)	23	(46)
Comprehensive income (loss)	[1]	$ 614	$ 427	$ 1,065	$ 814

[1] There were no material reclassifications from accumulated other comprehensive loss reflected in other comprehensive income (loss) during 2023 or 2022. There was no material tax impact related to the foreign currency translation adjustments. In 2021, we remitted 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 2023 or 2022.