Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Beginning Balance at Dec. 30, 2017	$ (119.4)	$ 0.6	$ (851.5)	$ 217.8	$ 1,043.1	$ (529.4)
Beginning Balance Shares, Issued at Dec. 30, 2017		63.6	12.6
Net income	35.7				35.7
Other Comprehensive Income (Loss), Net of Tax	7.7
Dividends, Common Stock, Cash	(34.9)				(34.9)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures			(0.1)
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(2.5)		$ (4.4)	(2.8)	(0.9)
Ending Balance at Mar. 31, 2018	(108.4)	$ 0.6	$ (847.1)	215.0	1,044.8	(521.7)
Ending Balance Shares, Issued at Mar. 31, 2018		63.6	12.5
Beginning Balance at Dec. 29, 2018	(235.2)	$ 0.6	$ (939.8)	219.3	1,086.8	(602.1)
Beginning Balance Shares, Issued at Dec. 29, 2018		63.6	15.0
Net income	36.9				36.9
Other Comprehensive Income (Loss), Net of Tax	19.0
Dividends, Common Stock, Cash	(12.9)				(12.9)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures			(0.1)
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures	(1.1)		$ (5.0)	(2.8)	(1.1)
Ending Balance at Mar. 30, 2019	(184.0)	$ 0.6	$ (934.8)	$ 216.5	1,121.8	(588.1)
Ending Balance Shares, Issued at Mar. 30, 2019		63.6	14.9
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 7.1				$ 12.1	$ (5.0)