Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2019		Sep. 28, 2019		Jun. 29, 2019		Mar. 30, 2019		Dec. 31, 2018		Sep. 29, 2018		Jun. 30, 2018		Mar. 31, 2018		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Earnings Per Share, Diluted [Line Items]
Net income (loss) attributable to shareholders	$ 112,013	[1]	$ 92,131	[2]	$ (548,966)	[3]	$ 140,735		$ 230,653	[1]	$ 176,533		$ 169,915		$ 139,094		$ (204,087)		$ 716,195		$ 402,176
Weight-average shares outstanding - basic																	83,568		87,476		88,681
Net effect of various dilutive stock-based compensation awards																	0		968		1,085
Weighted average shares outstanding - diluted																	83,568		88,444		89,766
Net Income (loss) per Share [Abstract]
Basic	$ 1.37	[4]	$ 1.11	[4]	$ (6.48)	[4]	$ 1.65	[4]	$ 2.66	[4]	$ 2.02	[4]	$ 1.94	[4]	$ 1.58	[4]	$ (2.44)		$ 8.19		$ 4.54
Diluted	$ 1.36	[4]	$ 1.10	[4]	$ (6.48)	[4]	$ 1.63	[4]	$ 2.63	[4]	$ 1.99	[4]	$ 1.92	[4]	$ 1.56	[4]	$ (2.44)	[5]	$ 8.10	[5]	$ 4.48	[5]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount																	1,614		651		380

[1] Net income attributable to shareholders includes a U.S. Tax Act benefit of $28,323 during the fourth quarter of 2018. Net income attributable to shareholders includes a pension settlement of $20,111 and loss on disposition of businesses, net of $5,813, and tax expense of $18,193 during the fourth quarter of 2019 related to the repatriation of foreign earnings and the wind down of the personal computer and mobility asset disposition business.

[2] Net income attributable to shareholders includes a loss on disposition of businesses, net, of $14,573 and personnel charges of $30,906 related to the operating expense reduction program, previously disclosed in July 2019, during the third quarter of 2019.

[3] Net income attributable to shareholders includes impairments of $697,993, a charge of $20,114 related to a subset of inventory held by its digital business, and a charge of $15,851 related to the receivables and inventory of its financing solutions business during the second quarter of 2019.

[4] Quarterly net income per share is calculated using the weighted-average shares outstanding during each quarterly period, while net income per share for the full year is calculated using the weighted-average shares outstanding during the year. Therefore, the sum of the net income per share for each of the four quarters may not equal the net income per share for the full year. As the company reported a net loss attributable to shareholders for the second quarter of 2019, basic and diluted net loss per share attributable to shareholders are the same.

[5] As the company reported a net loss attributable to shareholders for 2019, basic and diluted net loss per share attributable to shareholders are the same and stock-based compensation awards for the issuance of 1,614 shares were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive. Stock-based compensation awards for the issuance of 651 shares, and 380 shares for the years ended December 31, 2018, and 2017, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive.