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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) (unaudited) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Statement of Comprehensive Income [Abstract]        
Foreign currency translation adjustments, tax expense (benefit) $ 3 $ (15) $ 1 $ (22)
Cash flow hedges adjustments, tax expense 2 3 2 6
Tax expense related to available-for-sale securities 0 0 0 0
Amortization of prior service cost, tax benefit $ 0 $ 1 $ 0 $ 2