Summary of Restructuring and Impairment Costs (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2015
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning balance	$ 30.2
Restructuring Charges	1.9
Other Charges	3.0
Reserve Release	(0.2)
Cash Paid	(4.6)
Non-Cash Items	(0.8)
Accrual Balance, Ending balance	29.5
2014 Infrastructure Realignment Program | Employee Separation Costs
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning balance	28.7
Restructuring Charges	2.2
Reserve Release	(0.2)
Cash Paid	(2.1)
Non-Cash Items	(0.6)
Accrual Balance, Ending balance	28.0
2014 Infrastructure Realignment Program | Asset Impairments Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(0.5)
Cash Paid	0.5
2014 Infrastructure Realignment Program | Factory Closure Costs
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning balance	0.4
Restructuring Charges	0.2
Non-Cash Items	(0.2)
Accrual Balance, Ending balance	0.4
2014 Infrastructure Realignment Program | Qualification Costs
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning balance	1.1
Other Charges	3.0
Cash Paid	(3.0)
Accrual Balance, Ending balance	$ 1.1