Stockholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 26, 2020	Jun. 27, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 7,924,864		$ 7,821,591	$ 8,126,448	$ 7,440,059	$ 7,440,059
Shares issued under employee and director stock plans	492		0	(2,746)	(4,468)
Stock-based compensation expense	4,883		5,651	14,559	17,228
Repurchases of common stock	0		(67,708)	(68,641)	(76,671)
Noncontrolling earnings	336		150	(44)	354
Currency translation adjustment on non-controlling interests	24		(157)	(151)	(88)
Currency translation adjustment	31,283		(149,982)	(169,763)	(90,962)
Prior pension and post-retirement benefit service cost and actuarial gain / loss	70		216	164	283
Net income (loss)	205,117		155,518	267,374	479,544
Ending balance	8,167,069	$ 7,924,864	7,765,279	8,167,069	7,765,279	$ 8,126,448
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201613Member				us-gaap:AccountingStandardsUpdate201613Member
Cumulative Effect, Period of Adoption, Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	0			(131)
Ending balance		$ 0				$ (131)
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 785		$ 797	$ 790	$ 797	$ 797
Beginning balance (in shares)	78,541		79,712	78,980	79,656	79,656
Shares issued under employee and director stock plans	$ 0			$ 1	$ 1
Shares issued under employee and director stock plans (in shares)	4			144	122
Repurchases of common stock			$ (5)	$ (6)	$ (6)
Repurchases of common stock (in shares)			(519)	(579)	(585)
Ending balance	$ 785	$ 785	$ 792	$ 785	$ 792	$ 790
Ending balance (in shares)	78,545	78,541	79,193	78,545	79,193	78,980
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 1,874,623		$ 1,859,248	$ 1,868,250	$ 1,852,173	$ 1,852,173
Shares issued under employee and director stock plans	492			(2,811)	(4,502)
Stock-based compensation expense	4,883		5,651	14,559	17,228
Ending balance	1,879,998	$ 1,874,623	1,864,899	1,879,998	1,864,899	1,868,250
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	7,225,828		6,903,261	7,232,337	6,588,197	6,588,197
Repurchases of common stock			(67,703)	(68,635)	(76,665)
Net income (loss)	205,117		155,518	267,374	479,544
Ending balance	7,430,945	7,225,828	6,991,076	7,430,945	6,991,076	7,232,337
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance				(131)
Ending balance						(131)
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(966,776)		(732,521)	(765,824)	(791,608)	(791,608)
Currency translation adjustment	31,283		(149,982)	(169,763)	(90,962)
Prior pension and post-retirement benefit service cost and actuarial gain / loss	70		216	164	283
Ending balance	(935,423)	(966,776)	(882,287)	(935,423)	(882,287)	(765,824)
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ (215,648)		$ (215,712)	$ (215,712)	$ (215,745)	$ (215,745)
Beginning balance (in shares)	(7,346)		(7,348)	(7,348)	(7,349)	(7,349)
Shares issued under employee and director stock plans				$ 64	$ 33
Shares issued under employee and director stock plans (in shares)				2	1
Ending balance	$ (215,648)	$ (215,648)	$ (215,712)	$ (215,648)	$ (215,712)	$ (215,712)
Ending balance (in shares)	(7,346)	(7,346)	(7,348)	(7,346)	(7,348)	(7,348)
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 6,052		$ 6,518	$ 6,607	$ 6,245	$ 6,245
Noncontrolling earnings	336		150	(44)	354
Currency translation adjustment on non-controlling interests	24		(157)	(151)	(88)
Ending balance	$ 6,412	$ 6,052	$ 6,511	$ 6,412	$ 6,511	$ 6,607