Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Comprehensive Income (Loss) [Abstract]
Net earnings	$ 83.6	$ 69.3	$ 123.3	$ 96.8
Other comprehensive income (loss):
Foreign currency cumulative translation adjustment	(12.6)	2.3	(6.4)	18.4
Net change in unrealized gains on investments	0.1	0.3	0.1	0.3
Net change in unamortized prior service credits	(1.9)	5.0	(3.6)	3.8
Net change in unamortized actuarial loss	6.2	5.1	12.0	10.5
Net change in unrealized derivative losses	(3.4)	0.7	(5.4)	(1.9)
Total other comprehensive income	(11.6)	13.4	(3.3)	31.1
Comprehensive income	$ 72.0	$ 82.7	$ 120.0	$ 127.9