Comprehensive Income and Equity - Changes in AOCI, Net of Tax (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018		Apr. 01, 2017
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	$ 4,292.6		$ 3,192.9
Balance at end of period	4,554.6	[1]	3,463.5
Defined benefit plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(184.0)		(192.8)
Reclassification adjustments	1.3		1.7
Other comprehensive income (loss) recognized during the period	1.0		(1.0)
Balance at end of period	(181.7)		(192.1)
Comprehensive income (loss), tax
Reclassification adjustments, tax expense (benefit)	0.3		0.5
Other comprehensive income (loss), tax expense (benefit)	0.0		0.0
Derivative instruments and hedging
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(22.9)		(45.1)
Reclassification adjustments	(2.4)		8.8
Other comprehensive income (loss) recognized during the period	39.8		43.3
Balance at end of period	14.5		7.0
Comprehensive income (loss), tax
Reclassification adjustments, tax expense (benefit)	(0.7)		3.0
Other comprehensive income (loss), tax expense (benefit)	11.0		14.7
Foreign currency translation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(306.5)		(597.7)
Other comprehensive income (loss) recognized during the period	92.9		49.7
Balance at end of period	(213.6)		(548.0)
Comprehensive income (loss), tax
Other comprehensive income (loss), tax expense (benefit)	$ 0.0		$ 0.0

[1] Unaudited.