Changes in Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Millions		3 Months Ended
	Apr. 01, 2018	Jun. 30, 2019		Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ (127)	$ (30)	[1]	$ (127)
Other comprehensive income (loss) before reclassifications		23		63
Amounts reclassified from accumulated other comprehensive income (loss)		(10)		15
Total other comprehensive income (loss), net of tax		13		78
Ending balance	(104)	(17)		(26)
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(8)	(1)		(8)
Other comprehensive income (loss) before reclassifications		3		0
Amounts reclassified from accumulated other comprehensive income (loss)		0		0
Total other comprehensive income (loss), net of tax		3		0
Ending balance	(8)	2		(8)
Unrealized Gains (Losses) on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(89)	22		(89)
Other comprehensive income (loss) before reclassifications		19		78
Amounts reclassified from accumulated other comprehensive income (loss)		(10)		15
Total other comprehensive income (loss), net of tax		9		93
Ending balance	(66)	31		27
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(30)	(51)		(30)
Other comprehensive income (loss) before reclassifications		1		(15)
Amounts reclassified from accumulated other comprehensive income (loss)		0		0
Total other comprehensive income (loss), net of tax		1		(15)
Ending balance	(30)	$ (50)		$ (45)
Accounting Standards Update 2014-09 [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive income (loss) before reclassifications	22
Accounting Standards Update 2014-09 [Member] | Unrealized Gains (Losses) on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive income (loss) before reclassifications	22
ASU 2018-02 [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)	1
ASU 2018-02 [Member] | Unrealized Gains (Losses) on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)	$ 1

[1] Derived from audited Consolidated Financial Statements.