Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Treasury Stock [Member]	Paid-In Capital	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income
Beginning balance, shares at Dec. 31, 2016		63.6	13.0
Beginning balance at Dec. 31, 2016	$ 212.8	$ 0.6	$ (880.2)	$ 208.6	$ 1,455.3	$ (571.5)
Net income (loss)	(265.4)				(265.4)
Net other comprehensive income (loss)	42.1					42.1
Cash dividends declared	$ (140.2)				(140.2)
Repurchase of common stock, shares	0.0
Repurchase of common stock, value	$ 0.0
Stock and options issued for incentive plans, shares			(0.4)
Stock and options issued for incentive plans	31.3		$ 28.7	9.2	(6.6)
Ending balance, shares at Dec. 30, 2017		63.6	12.6
Ending balance at Dec. 30, 2017	(119.4)	$ 0.6	$ (851.5)	217.8	1,043.1	(529.4)
Net income (loss)	155.9				155.9
Net other comprehensive income (loss)	(48.5)					(48.5)
Cash dividends declared	$ (136.1)				(136.1)
Repurchase of common stock, shares	2.6		2.6
Repurchase of common stock, value	$ (100.2)		$ (100.2)
Stock and options issued for incentive plans, shares			(0.2)
Stock and options issued for incentive plans	13.1		$ 11.9	1.5	(0.3)
Ending balance, shares at Dec. 29, 2018		63.6	15.0
Ending balance at Dec. 29, 2018	(235.2)	$ 0.6	$ (939.8)	219.3	1,086.8	(602.1)
Cumulative Effect of New Accounting Principle in Period of Adoption	0.0				24.2	(24.2)
Net income (loss)	12.4				12.4
Net other comprehensive income (loss)	(31.2)					(31.2)
Cash dividends declared	(39.4)				(39.4)
Repurchase of common stock, value	0.0
Stock and options issued for incentive plans, shares			(0.3)
Stock and options issued for incentive plans	9.3		$ 18.2	(4.3)	(4.6)
Ending balance, shares at Dec. 28, 2019		63.6	14.7
Ending balance at Dec. 28, 2019	(277.0)	$ 0.6	$ (921.6)	$ 215.0	1,067.3	(638.3)
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 7.1				$ 12.1	$ (5.0)