CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net earnings (loss)	$ (12.5)	$ 4.7	$ 18.5	$ (1.2)	$ (0.8)	$ (2.1)	$ (31.9)	$ (21.1)	$ 9.5	$ (55.9)	$ (13.4)
Other comprehensive income (loss), net of tax:
Currency translation adjustment									1.4	(1.6)	1.6
Pension liability adjustments:
Actuarial loss arising during the period									(3.3)	(29.9)	(3.2)
Amortization to net income of net actuarial loss									0.4	(0.2)	0
Deferred income taxes on pension liability									0	10.1	0.9
Total pension liability, net of tax									(2.9)	(20.0)	(2.3)
Comprehensive income (loss)									$ 8.0	$ (77.5)	$ (14.1)