Separate Financial Information of Guarantor Subsidiaries - Statement of Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jan. 03, 2020	Oct. 04, 2019	Dec. 28, 2018	Sep. 28, 2018	Jan. 03, 2020	Dec. 28, 2018
Condensed Statement of Income Captions [Line Items]
Net income (loss)	$ (139)	$ (276)	$ (487)	$ 511	$ (415)	$ 24
Actuarial pension gain (loss)	2		1		3	1
Foreign currency translation adjustment	(15)		31		(10)	(6)
Net unrealized gain (loss) on derivative contracts and available-for-sale securities	(6)		7		(39)	6
Total other comprehensive income (loss), before tax	(19)		39		(46)	1
Income tax benefit (expense) related to items of other comprehensive income (loss), before tax	(1)		2		4	3
Other comprehensive income (loss), net of tax	(20)		41		(42)	4
Total comprehensive income (loss)	(159)		(446)		(457)	28
Parent
Condensed Statement of Income Captions [Line Items]
Net income (loss)	(139)		(487)		(415)	24
Actuarial pension gain (loss)	2		1		3	1
Foreign currency translation adjustment	(15)		31		(10)	(6)
Net unrealized gain (loss) on derivative contracts and available-for-sale securities	(6)		7		(39)	6
Total other comprehensive income (loss), before tax	(19)		39		(46)	1
Income tax benefit (expense) related to items of other comprehensive income (loss), before tax	(1)		3		4	4
Other comprehensive income (loss), net of tax	(20)		42		(42)	5
Total comprehensive income (loss)	(159)		(445)		(457)	29
Guarantor Subsidiaries
Condensed Statement of Income Captions [Line Items]
Net income (loss)	(156)		(422)		(376)	43
Actuarial pension gain (loss)	2		1		3	1
Foreign currency translation adjustment	(13)		32		(8)	(2)
Net unrealized gain (loss) on derivative contracts and available-for-sale securities	(26)		30		(34)	22
Total other comprehensive income (loss), before tax	(37)		63		(39)	21
Income tax benefit (expense) related to items of other comprehensive income (loss), before tax	4		(2)		3	(2)
Other comprehensive income (loss), net of tax	(33)		61		(36)	19
Total comprehensive income (loss)	(189)		(361)		(412)	62
Non-Guarantor Subsidiaries
Condensed Statement of Income Captions [Line Items]
Net income (loss)	(384)		(133)		(843)	212
Actuarial pension gain (loss)	2		1		3	1
Foreign currency translation adjustment	(13)		32		(8)	(2)
Net unrealized gain (loss) on derivative contracts and available-for-sale securities	(14)		30		(23)	20
Total other comprehensive income (loss), before tax	(25)		63		(28)	19
Income tax benefit (expense) related to items of other comprehensive income (loss), before tax	1		(2)		0	(1)
Other comprehensive income (loss), net of tax	(24)		61		(28)	18
Total comprehensive income (loss)	(408)		(72)		(871)	230
Eliminations
Condensed Statement of Income Captions [Line Items]
Net income (loss)	540		555		1,219	(255)
Actuarial pension gain (loss)	(4)		(2)		(6)	(2)
Foreign currency translation adjustment	26		(64)		16	4
Net unrealized gain (loss) on derivative contracts and available-for-sale securities	40		(60)		57	(42)
Total other comprehensive income (loss), before tax	62		(126)		67	(40)
Income tax benefit (expense) related to items of other comprehensive income (loss), before tax	(5)		3		(3)	2
Other comprehensive income (loss), net of tax	57		(123)		64	(38)
Total comprehensive income (loss)	$ 597		$ 432		$ 1,283	$ (293)