Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Beginning Balance at Jul. 03, 2015	$ 9,219	$ 3	$ 2,299	$ 2,428	$ (20)	$ 9,107
Beginning Balance, Shares at Jul. 03, 2015		261.0	31.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	242					242
Employee stock plans	67		$ 191	(124)
Employee stock plans (in shares)			5.0
Stock-based compensation	191			191
Common stock issued in connection with acquisition	1,764			1,764
Common stock issued in connection with acquisition, shares		49.0
Stock awards assumed in acquisition	58			58
Increase in excess tax benefits from employee stock plans	7			7
Shares issued in conjunction with settlement of convertible notes	94			94
Shares issued in conjunction with settlement of convertible notes, shares		2.0
Shares received in conjunction with assumed call options	(70)		$ (70)
Shares received in conjunction with assumed call options, shares			(1.0)
Repurchases of common stock	(60)		$ (60)
Repurchases of common stock, shares			(1.0)
Dividends to shareholders	(490)			11		(501)
Actuarial pension loss	(50)				(50)
Foreign currency translation gains (losses)	74				74
Net unrealized gain (loss) on derivative contracts	99				99
Ending Balance at Jul. 01, 2016	11,145	$ 3	$ 2,238	4,429	103	8,848
Ending Balance, Shares at Jul. 01, 2016		312.0	28.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	397					397
Employee stock plans	111		$ 583	(472)
Employee stock plans (in shares)			10.0
Stock-based compensation	394			394
Increase in excess tax benefits from employee stock plans	104			104
Shares issued in conjunction with settlement of convertible notes	16			16
Shares received in conjunction with assumed call options	(11)		$ (11)
Dividends to shareholders	(577)			35		(612)
Actuarial pension loss	27				27
Foreign currency translation gains (losses)	(113)				(113)
Net unrealized gain (loss) on derivative contracts	(75)				(75)
Ending Balance at Jun. 30, 2017	11,418	$ 3	$ 1,666	4,506	(58)	8,633
Ending Balance, Shares at Jun. 30, 2017		312.0	18.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	681
Beginning Balance at Jun. 30, 2017	11,418	$ 3	$ 1,666	4,506	(58)	8,633
Beginning Balance, Shares at Jun. 30, 2017		312.0	18.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	675					675
Employee stock plans	49		$ 813	(764)
Employee stock plans (in shares)			9.0
Stock-based compensation	377			377
Shares issued in conjunction with settlement of convertible notes	0
Shares received in conjunction with assumed call options	0
Repurchases of common stock	$ (591)		$ (591)
Repurchases of common stock, shares	(7.1)		(7.0)
Dividends to shareholders	$ (592)			29		(621)
Actuarial pension loss	(1)				(1)
Foreign currency translation gains (losses)	18				18
Net unrealized gain (loss) on derivative contracts	2				2
Equity value of convertible debt issuance, net of deferred taxes	125			125
Ending Balance at Jun. 29, 2018	11,531	$ 3	$ 1,444	4,254	$ (39)	8,757
Ending Balance, Shares at Jun. 29, 2018		312.0	16.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of New Accounting Standards	$ 51			$ (19)		$ 70