Earnings Per Share and Shareholders' Equity (Details) - USD ($)		1 Months Ended	3 Months Ended		6 Months Ended
		Oct. 31, 2015	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Oct. 30, 2015
Numerator:
Net income (loss)			$ 36,200,000	$ (69,600,000)	$ 117,000,000	$ 2,000,000
Denominator:
Weighted average shares outstanding for basic EPS			138,100,000	143,300,000	139,500,000	143,300,000
Dilutive effect of share-based awards (in shares)	[1]		600,000	0	500,000	300,000
Weighted average shares outstanding for diluted EPS			138,700,000	143,300,000	140,000,000	143,600,000
Anti-dilutive share-based awards excluded from computation of diluted EPS			1,700,000	0	900,000	800,000
Share-based compensation arrangement by share-based payment award, options, exercises in period (in shares)			74,000	31,900	127,000	46,400
Stock repurchase program approved period, in years		3 years
Stock repurchase program, authorized amount							$ 2,000,000,000
Share price (in dollars per share)			$ 79.42	$ 71.67	$ 80.42	$ 71.67
Repurchase of equity amount			$ 156,900,000	$ 58,200,000	$ 265,000,000	$ 58,200,000
Common Stock
Denominator:
Stock repurchase program, number of shares repurchased			2,000,000	812,184	3,300,000	812,184

[1] In the period of a net loss, diluted shares equal basic shares.