Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2012	Mar. 29, 2012	Dec. 31, 2011	Mar. 31, 2011	Jun. 28, 2012	Jun. 30, 2011	Sep. 27, 2012	Sep. 29, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Comprehensive Income
Income tax provision									$ 24.1	$ (86.9)	$ (78.2)
Net income, Net of Tax	60.7	73.6	60.4	34.6	34.9	30.1	(134.4)	67.3	34.8	192.4	218.9
Basic EPS
Income available to common shareholders									34.4	189.2	215.8
Income available to common shareholders, share									140,700,000	139,200,000	137,900,000
Income available to common shareholders, per share amount	$ 0.43	$ 0.52	$ 0.43	$ 0.25	$ 0.25	$ 0.21	$ (0.94)	$ 0.48	$ 0.24	$ 1.36	$ 1.56
Net Income Loss Available To Participating Securities									0.4	3.2	3.1
Income allocated to participating securities, shares									1,500,000	2,300,000	2,000,000
Net income	60.7	73.6	60.4	34.6	34.9	30.1	(134.4)	67.3	34.8	192.4	218.9
Diluted potential common shares									500,000	800,000	1,100,000
Diluted EPS
Net income, Net of Tax	60.7	73.6	60.4	34.6	34.9	30.1	(134.4)	67.3	34.8	192.4	218.9
Shares									142,700,000	142,300,000	141,000,000
Per share amount	$ 0.43	$ 0.52	$ 0.42	$ 0.24	$ 0.24	$ 0.21	$ (0.94)	$ 0.47	$ 0.24	$ 1.35	$ 1.55
Equity Textuals [Abstract]
Common shares, outstanding	143,700,000		142,900,000						143,700,000	142,900,000	142,100,000
Common shares outstanding issued but unvested	2,700,000		2,600,000						2,700,000	2,600,000	2,900,000
Noncontrolling interest	0.5		0.5						0.5	0.5
Accumulated Other Comprehensive Income (Loss), Net of Tax	(145.2)		(126.2)						(145.2)	(126.2)
Interest rate swaps [Member]
Equity Textuals [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax			(2.8)							(2.8)
Foreign Exchange Contract [Member]
Equity Textuals [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax			(0.1)							(0.1)
Accumulated Translation Adjustment [Member]
Equity Textuals [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(7.1)		(13.4)						(7.1)	(13.4)
Accumulated Defined Benefit Plans Adjustment [Member]
Equity Textuals [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(132.0)		(91.5)						(132.0)	(91.5)
Accumulated Net FX Gain Loss on LT Interco Loan Unrealized [Member]
Equity Textuals [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(3.5)		(5.7)						(3.5)	(5.7)
Accumulated SERP And Retiree Medical [Member]
Equity Textuals [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (2.6)		$ (12.7)						$ (2.6)	$ (12.7)