Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2012	Jun. 30, 2011	Jun. 28, 2012	Jun. 30, 2011
Statement Comprehensive Income [Line Items]
Net income	$ 34.9	$ 30.1	$ 108.5	$ 64.7
Unrealized Gain (Loss) on Investments [Abstract]
Other Comprehensive Income Reclassification Adjustment On Derivatives Realized In Other Assets Tax				0.4
Pension, SERP and Retiree Medical adjustments, Tax	0.1	0.1	0.2	0.1
Pension, SERP and Retiree Medical adjustments, Net of Tax	0.2		0.4	0.1
Foreign currency translation adjustments, Net of Tax	(3.6)	(0.3)		3.7
Other Comprehensive Income Unrealized Gain Loss On Intercompany Loan Tax	0.4			0.6
Other Comprehensive Income Unrealized Gain Loss On Intercompany Loan Net Of Tax	(1.3)	(0.1)		1.5
Total Comprehensive Income, Net of Tax	31.3	30.4	109.9	74.0
Interest rate swaps [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Unrealized Gain (Loss) on Derivatives Arising During Period, Tax		0.9	0.5	1.0
Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(0.2)	(1.5)	(0.9)	(1.6)
Reclassification Adjustment on Derivatives, Tax	0.9	1.2	1.2	2.4
Reclassification Adjustment on Derivatives, Net of Tax	1.4	2.0	1.9	4.0
Foreign currency hedge contracts [Member]
Unrealized Gain (Loss) on Investments [Abstract]
Unrealized Gain (Loss) on Derivatives Arising During Period, Tax		0.1		0.3
Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(0.1)	0.2		0.8
Reclassification Adjustment on Derivatives, Tax	0.1
Reclassification Adjustment on Derivatives, Net of Tax				0.1
Other Comprehensive Income Reclassification Adjustment On Derivatives Realized In Other Assets Net Of Tax				$ 0.7