CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Common stock, shares issued at Jan. 01, 2016		33,300,000
Stockholders' equity at Jan. 01, 2016	$ 1,179.4	$ 33.3	$ 249.2	$ 1,127.4	$ (230.5)
Net income	120.5			120.5
Other comprehensive (loss) income:
Foreign currency translation	(11.9)				(11.9)
Changes in unrealized pension cost, net of tax	(8.5)				(8.5)
Stock-based compensation	16.5		16.5
Issuance of common stock and related taxes, shares		100,000
Issuance of common stock and related taxes	(3.8)	$ 0.1	(3.9)
Common stock, shares issued at Dec. 30, 2016		33,400,000
Stockholders' equity at Dec. 30, 2016	1,292.2	$ 33.4	261.8	1,247.9	(250.9)
Net income	109.0			109.0
Other comprehensive (loss) income:
Foreign currency translation	30.7				30.7
Changes in unrealized pension cost, net of tax	9.9				9.9
Stock-based compensation	18.1		18.1
Issuance of common stock and related taxes, shares		300,000
Issuance of common stock and related taxes	$ (0.9)	$ 0.3	(1.2)
Common stock, shares issued at Dec. 29, 2017	33,657,466	33,700,000
Stockholders' equity at Dec. 29, 2017	$ 1,459.0	$ 33.7	278.7	1,356.9	(210.3)
Net income	156.3			156.3
Other comprehensive (loss) income:
Foreign currency translation	(45.4)				(45.4)
Changes in unrealized pension cost, net of tax	(13.7)				(13.7)
Stock-based compensation	18.9		18.9
Issuance of common stock and related taxes, shares		200,000
Issuance of common stock and related taxes	$ (4.7)	$ 0.2	(4.9)
Common stock, shares issued at Dec. 28, 2018	33,862,704	33,900,000
Stockholders' equity at Dec. 28, 2018	$ 1,570.4	$ 33.9	$ 292.7	$ 1,513.2	$ (269.4)