Changes in Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2022		Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 15	[1]	$ (50)
Other comprehensive income (loss) before reclassifications	72		4
Amounts reclassified from accumulated other comprehensive income (loss)	(16)		11
Total other comprehensive income (loss), net of tax	56		15
Ending balance	71		(35)
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(3)		0
Other comprehensive income (loss) before reclassifications	(1)		0
Amounts reclassified from accumulated other comprehensive income (loss)	0		0
Total other comprehensive income (loss), net of tax	(1)		0
Ending balance	(4)		0
Unrealized Gains (Losses) on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	47		(29)
Other comprehensive income (loss) before reclassifications	106		(5)
Amounts reclassified from accumulated other comprehensive income (loss)	(16)		11
Total other comprehensive income (loss), net of tax	90		6
Ending balance	137		(23)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(29)		(21)
Other comprehensive income (loss) before reclassifications	(33)		9
Amounts reclassified from accumulated other comprehensive income (loss)	0		0
Total other comprehensive income (loss), net of tax	(33)		9
Ending balance	$ (62)		$ (12)

[1] Derived from audited Consolidated Financial Statements.