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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Statement of Comprehensive Income [Abstract]    
Actuarial losses, tax benefit (less than) $ 0 $ 1,000,000
Amortization of unrecognized actuarial losses, tax benefit (less than) 1,000,000 1,000,000
Realized (gains) losses on derivative instruments, tax expense 1,000,000 0
Unrealized (losses) gains on derivative instruments, tax expense (benefit) $ 4,000,000 $ 0