Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Earnings (Losses) Per Share, Diluted [Line Items]
Net income (loss) attributable to shareholders		$ 132,804	$ (548,966)	$ 182,307	$ (408,231)
Weighted-average shares outstanding - basic		78,677	84,652	79,527	85,022
Net effect of various dilutive stock-based compensation awards		549	0	586	0
Weighted-average shares outstanding - diluted		79,226	84,652	80,113	85,022
Net income (loss) per share:
Basic		$ 1.69	$ (6.48)	$ 2.29	$ (4.80)
Diluted	[1]	$ 1.68	$ (6.48)	$ 2.28	$ (4.80)
Share-based Payment Arrangement [Member]
Net income (loss) per share:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		1,625	1,961	1,471	1,810

[1] Stock-based compensation awards for the issuance of 1,625 and 1,471 shares for the second quarter and first six months of 2020, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive. As the company reported a net loss attributable to shareholders for the second quarter and first six months of 2019, basic and diluted net loss per share attributable to shareholders are the same and stock-based compensation awards for the issuance of 1,961 and 1,810 shares, respectively, were excluded from the computation of net loss per share on a diluted basis as their effect was anti-dilutive.