Equity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2017	Sep. 29, 2016	Sep. 28, 2017	Sep. 29, 2016	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Common Stock, Shares Authorized	210,000,000		210,000,000
Common Stock, Dividends, Per Share, Declared	$ 0.10	$ 0.00	$ 0.30	$ 0.00
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (153.3)		$ (153.3)		$ (186.9)
Basic EPS
Income available to common shareholders	$ 147.1	$ 144.9	$ 231.9	$ 361.2
Income available to common shareholders, shares	115,800,000	124,400,000	117,800,000	128,200,000
Income available to common shareholders, per share amount	$ 1.27	$ 1.16	$ 1.97	$ 2.82
Income allocated to participating securities	$ 0.1	$ 0.2	$ 0.2	$ 0.3
Income allocated to participating securities, shares	100,000	100,000	100,000	100,000
Net income	$ 147.2	$ 145.1	$ 232.1	$ 361.5
Diluted potential common shares	1,100,000	800,000	1,100,000	700,000
Diluted EPS
Net income	$ 147.2	$ 145.1	$ 232.1	$ 361.5
Shares	117,000,000	125,300,000	119,000,000	129,000,000
Per share amount	$ 1.26	$ 1.16	$ 1.95	$ 2.80
Equity Textuals [Abstract]
Common shares outstanding issued but unvested	1,500,000	1,600,000	1,500,000	1,600,000
Noncontrolling interest	$ 0.5		$ 0.5		0.5
Pension [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(98.5)		(98.5)		(98.5)
SERP and Retiree medical [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	19.0		19.0		20.5
Foreign currency impact on long term intercompany loan [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(15.2)		(15.2)		(19.1)
Currency translation adjustment [Member]
Derivatives, Fair Value [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (58.6)		$ (58.6)		$ (89.8)