Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Total	Treasury Stock	Share Repurchase Program Treasury Stock
Redeemable Noncontrolling Interest, Equity, Other, Carrying Amount	$ 0
Balance (in shares) at Sep. 29, 2018		289,900				19,812
Beginning balance at Sep. 29, 2018	2,428,800	$ 2,900	$ 5,671,300	$ (2,494,000)	$ (25,500)	$ (725,900)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		373
Exercise of stock options	9,100		9,100
Vesting of restricted stock units, net of shares withheld for employee taxes ( in shares)		575
Vesting of restricted stock units, net of shares withheld for employee taxes	(11,600)		(11,600)
Stock-based compensation expense	17,100		17,100
Net income (loss)	98,600
Other comprehensive income activity	(6,400)				(6,400)
Repurchase of common stock (in shares)						3,712
Repurchase of common stock	(150,100)					$ (150,100)
Balance (in shares) at Dec. 29, 2018		290,848				23,524
Ending balance at Dec. 29, 2018	2,394,400	$ 2,900	5,685,900	(2,386,500)	(31,900)	$ (876,000)
Balance (in shares) at Sep. 29, 2018		289,900				19,812
Beginning balance at Sep. 29, 2018	2,428,800	$ 2,900	5,671,300	(2,494,000)	(25,500)	$ (725,900)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(80,100)
Balance (in shares) at Jun. 29, 2019		291,690				24,638
Ending balance at Jun. 29, 2019	2,216,500	$ 2,900	5,739,000	(2,565,200)	(34,200)	$ (926,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling Interest in Net Income (Loss) Other Noncontrolling Interests, Redeemable	0
Net income	(80,100)
Payments to Noncontrolling Interests	0
Redeemable Noncontrolling Interest, Equity, Other, Carrying Amount	0
Accounting standard transition adjustment | Accounting Standards Update 2014-09	6,400			6,400
Accounting standard transition adjustment | Accounting Standards Update 2016-16	(2,500)			(2,500)
Balance (in shares) at Dec. 29, 2018		290,848				23,524
Beginning balance at Dec. 29, 2018	2,394,400	$ 2,900	5,685,900	(2,386,500)	(31,900)	$ (876,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		454
Exercise of stock options	11,600		11,600
Vesting of restricted stock units, net of shares withheld for employee taxes ( in shares)		33
Vesting of restricted stock units, net of shares withheld for employee taxes	(400)		(400)
Common stock issued under the employee stock purchase plan (in shares)		226
Common stock issued under the employee stock purchase plan	7,900		7,900
Stock-based compensation expense	17,500		17,500
Net income (loss)	(272,600)
Other comprehensive income activity	1,400				1,400
Balance (in shares) at Mar. 30, 2019		291,561				23,524
Ending balance at Mar. 30, 2019	2,159,800	$ 2,900	5,722,500	(2,659,100)	(30,500)	$ (876,000)
Redeemable Noncontrolling Interest, Equity, Other, Carrying Amount	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		108
Exercise of stock options	3,100		3,100
Vesting of restricted stock units, net of shares withheld for employee taxes ( in shares)		21
Vesting of restricted stock units, net of shares withheld for employee taxes	(500)		(500)
Stock-based compensation expense	13,900		13,900
Net income (loss)	93,900
Other comprehensive income activity	(3,700)				(3,700)
Repurchase of common stock (in shares)						1,114
Repurchase of common stock	(50,000)					$ (50,000)
Balance (in shares) at Jun. 29, 2019		291,690				24,638
Ending balance at Jun. 29, 2019	2,216,500	$ 2,900	5,739,000	(2,565,200)	(34,200)	$ (926,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	93,900
Redeemable Noncontrolling Interest, Equity, Other, Carrying Amount	0
Exercise of stock options (in shares)		369
Exercise of stock options			9,000
Vesting of restricted stock units, net of shares withheld for employee taxes ( in shares)		16
Vesting of restricted stock units, net of shares withheld for employee taxes			(300)
Common stock issued under the employee stock purchase plan (in shares)		248
Common stock issued under the employee stock purchase plan			8,600
Stock-based compensation expense			13,500
Net income (loss)	(123,500)
Other comprehensive income activity					(8,100)
Balance (in shares) at Sep. 28, 2019		292,323				24,638
Ending balance at Sep. 28, 2019	2,115,700	$ 2,900	5,769,800	(2,688,700)	(42,300)	$ (926,000)
Redeemable Noncontrolling Interest, Equity, Other, Carrying Amount	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,115,700
Noncontrolling Interest, Increase from Business Combination	8,600
Exercise of stock options (in shares)		540
Exercise of stock options			13,800
Vesting of restricted stock units, net of shares withheld for employee taxes ( in shares)		476
Vesting of restricted stock units, net of shares withheld for employee taxes			(10,900)
Stock-based compensation expense			18,100
Net income (loss)	385,800
Other comprehensive income activity					13,600
Repurchase of common stock (in shares)						1,545	3,279
Repurchase of common stock	(80,900)					$ (80,900)	$ 164,000
Accelerated share repurchase agreement						$ (41,000)
Balance (in shares) at Dec. 28, 2019		293,339				29,462
Ending balance at Dec. 28, 2019		$ 2,900	5,749,800	(2,302,300)	(28,700)	$ (1,170,900)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling Interest in Net Income (Loss) Other Noncontrolling Interests, Redeemable	(300)
Net income	386,100
Accelerated share repurchase agreement	(205,000)
Payments to Noncontrolling Interests	(1,400)
Balance (in shares) at Sep. 28, 2019		292,323				24,638
Beginning balance at Sep. 28, 2019	2,115,700	$ 2,900	5,769,800	(2,688,700)	(42,300)	$ (926,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	616,900
Balance (in shares) at Jun. 27, 2020		294,684				35,941
Ending balance at Jun. 27, 2020	2,255,100	$ 2,900	5,861,700	(2,068,100)	(61,900)	$ (1,479,500)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling Interest in Net Income (Loss) Other Noncontrolling Interests, Redeemable	(3,400)
Net income	620,300
Payments to Noncontrolling Interests	(1,800)
Redeemable Noncontrolling Interest, Equity, Other, Carrying Amount	6,900
Accounting standard transition adjustment | Accounting Standards Update 2018-01 [Member]				300
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,257,700
Balance (in shares) at Dec. 28, 2019		293,339				29,462
Beginning balance at Dec. 28, 2019		$ 2,900	5,749,800	(2,302,300)	(28,700)	$ (1,170,900)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		503
Exercise of stock options			13,900
Vesting of restricted stock units, net of shares withheld for employee taxes ( in shares)		86
Vesting of restricted stock units, net of shares withheld for employee taxes			(1,600)
Common stock issued under the employee stock purchase plan (in shares)		214
Common stock issued under the employee stock purchase plan			8,800
Stock-based compensation expense			15,700
Net income (loss)	94,800
Other comprehensive income activity					(30,200)
Repurchase of common stock (in shares)						5,851	628
Repurchase of common stock						$ (267,600)	$ 41,000
Accelerated share repurchase agreement						$ 41,000
Balance (in shares) at Mar. 28, 2020		294,142				35,941
Ending balance at Mar. 28, 2020		$ 2,900	5,827,600	(2,206,000)	(58,900)	$ (1,479,500)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling Interest in Net Income (Loss) Other Noncontrolling Interests, Redeemable	(1,500)
Net income	96,300
Accelerated share repurchase agreement	0
Payments to Noncontrolling Interests	(300)
Redeemable Noncontrolling Interest, Equity, Other, Carrying Amount	5,100
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,091,200
Exercise of stock options (in shares)		533
Exercise of stock options			14,400
Vesting of restricted stock units, net of shares withheld for employee taxes ( in shares)		9
Vesting of restricted stock units, net of shares withheld for employee taxes			(200)
Stock-based compensation expense			19,900
Net income (loss)	136,400
Other comprehensive income activity					(3,000)
Balance (in shares) at Jun. 27, 2020		294,684				35,941
Ending balance at Jun. 27, 2020	2,255,100	$ 2,900	$ 5,861,700	$ (2,068,100)	$ (61,900)	$ (1,479,500)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling Interest in Net Income (Loss) Other Noncontrolling Interests, Redeemable	(1,500)
Net income	137,900
Payments to Noncontrolling Interests	(100)
Redeemable Noncontrolling Interest, Equity, Other, Carrying Amount	3,500
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 2,258,600