Debt - Debt Outstanding and Average Interest Rates (Detail) € in Millions, $ in Millions	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 26, 2015 USD ($)	Sep. 26, 2015 EUR (€)
Debt Disclosure [Line Items]
Long-term Debt, Excluding Current Maturities	$ 4,278.4	$ 4,685.8
Less: Current maturities and short-term borrowings	(0.8)	0.0
Total debt	4,279.2	4,685.8
Other Debt Obligations [Member]
Debt Disclosure [Line Items]
Total debt	0.8	0.0
Senior Notes One Point Eight Seven Five Percent Due Twenty Seventeen [Member] | Senior Notes
Debt Disclosure [Line Items]
Total debt	350.0	350.0
Senior Notes Two Point Nine Percent Due Twenty Eighteen [Member] | Senior Notes
Debt Disclosure [Line Items]
Total debt	500.0	500.0	$ 500.0
Senior Notes 2.650% due 2019 | Senior Notes
Debt Disclosure [Line Items]
Total debt	250.0	250.0
Senior Notes Two Point Four Five Percent Due Twenty Nineteen [Member] | Senior Notes
Debt Disclosure [Line Items]
Total debt	520.7	548.4		€ 500.0
Senior Notes Three Point Six Two Five Percent Due Twenty Twenty [Member] | Senior Notes
Debt Disclosure [Line Items]
Total debt	400.0	400.0	400.0
Senior Notes, 5.000% Due 2021 | Senior Notes
Debt Disclosure [Line Items]
Total debt	500.0	500.0
Senior Notes 3.150% due 2022 | Senior Notes
Debt Disclosure [Line Items]
Total debt	550.0	550.0
Senior Notes Four Point Six Five Percent Due Twenty Twenty Five [Member] | Senior Notes
Debt Disclosure [Line Items]
Total debt	250.0	250.0	$ 250.0
Revolving Credit Facility [Member] | Long Term Revolving Credit Facility [Member]
Debt Disclosure [Line Items]
Total debt	$ 576.8	$ 1,181.4