General (Detail 4) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Accounting Changes and Error Corrections
Net income	$ 81.7	$ 60.2	$ 217.3	$ 174.5
Pension and other postretirement benefits	7.5	5.7	26.8	21.6
Other comprehensive loss, before tax	(53.4)	(73.3)	(103.9)	(62.0)
Income tax expense related to components of other comprehensive loss	2.3	0.7	8.9	6.4
Other comprehensive loss, net of tax	(55.7)	(74.0)	(112.8)	(68.4)
Total comprehensive (loss) income, net of tax	$ 26.0	(13.8)	$ 104.5	106.1
As Previously Reported
Accounting Changes and Error Corrections
Net income		64.3		178.0
Pension and other postretirement benefits		5.7		16.6
Other comprehensive loss, before tax		(73.3)		(67.0)
Income tax expense related to components of other comprehensive loss		1.7		5.5
Other comprehensive loss, net of tax		(75.0)		(72.5)
Total comprehensive (loss) income, net of tax		(10.7)		105.5
Adjustments
Accounting Changes and Error Corrections
Net income		(4.1)		(3.5)
Pension and other postretirement benefits				5.0
Other comprehensive loss, before tax				5.0
Income tax expense related to components of other comprehensive loss		(1.0)		0.9
Other comprehensive loss, net of tax		1.0		4.1
Total comprehensive (loss) income, net of tax		$ (3.1)		$ 0.6