Condensed Consolidating Statements of Cash Flows (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities:	$ 684.7	$ 627.0	$ 668.5
Net change in short-term debt	(34.0)	25.4	102.0
Proceeds from issuance of long-term debt	1,389.8	1,764.8	1,273.4
Payments on long-term debt	(54.7)	(1,248.0)	(407.7)
Issuance (repurchase) of common stock, net	1,315.5	(285.3)	450.5
Excess tax benefits from stock-based compensation	25.9	38.0	11.6
Other	(23.8)	(29.4)	(24.2)
Net cash provided by (used in) financing activities	2,618.7	265.5	1,405.6
Additions to property, plant and equipment	(214.6)	(202.1)	(211.0)
Acquisition of business, net of cash acquired	(2,937.1)	(517.4)	(1,820.1)
Other	34.6	8.0	73.7
Net cash provided by (used in) investing activities	(3,117.1)	(711.5)	(1,957.4)
Effect of exchange rate changes on cash	(52.7)	(144.7)	(22.3)
Net increase (decrease) in cash and cash equivalents	133.6	36.3	94.4
Cash and cash equivalents at beginning of period	1,164.8	1,128.5	1,034.1
Cash and cash equivalents at end of period	1,298.4	1,164.8	1,128.5
Parent Company
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities:	(137.6)	(145.5)	(180.6)
(Payments on) proceeds from intercompany transactions	545.3	11.8	775.4
Proceeds from issuance of long-term debt	1,386.0	1,752.5	1,261.5
Payments on long-term debt	(52.6)	(1,245.7)	(404.5)
Issuance (repurchase) of common stock, net	1,315.5	(285.3)	450.5
Excess tax benefits from stock-based compensation	25.9	38.0	11.6
Other	(17.7)	(21.4)	(19.2)
Net cash provided by (used in) financing activities	3,202.4	249.9	2,075.3
Additions to property, plant and equipment	(11.7)	(6.2)	(37.5)
Acquisition of business, net of cash acquired	(2,904.0)		(1,807.4)
Other	1.7	(0.2)	20.8
Net cash provided by (used in) investing activities	(2,914.0)	(6.4)	(1,824.1)
Net increase (decrease) in cash and cash equivalents	150.8	98.0	70.6
Cash and cash equivalents at beginning of period	728.8	630.8	560.2
Cash and cash equivalents at end of period	879.6	728.8	630.8
Guarantor Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities:	1,080.3	555.1	675.2
Net change in short-term debt	(0.9)		(0.1)
(Payments on) proceeds from intercompany transactions	(932.5)	(74.9)	(567.5)
Proceeds from issuance of long-term debt		1.6
Payments on long-term debt	(0.8)	(1.5)	(1.8)
Other	(0.4)	(7.6)	(4.4)
Net cash provided by (used in) financing activities	(934.6)	(82.4)	(573.8)
Additions to property, plant and equipment	(133.7)	(129.0)	(77.7)
Acquisition of business, net of cash acquired	(7.0)	(340.5)
Intercompany investing activities, net	(4.6)		(16.3)
Other	(2.1)	(7.4)	1.2
Net cash provided by (used in) investing activities	(147.4)	(476.9)	(92.8)
Net increase (decrease) in cash and cash equivalents	(1.7)	(4.2)	8.6
Cash and cash equivalents at beginning of period	9.3	13.5	4.9
Cash and cash equivalents at end of period	7.6	9.3	13.5
Non-Guarantor Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities:	(248.8)	236.5	182.8
Net change in short-term debt	(33.1)	25.4	102.1
(Payments on) proceeds from intercompany transactions	382.6	44.0	(200.5)
Proceeds from issuance of long-term debt	3.8	10.7	11.9
Payments on long-term debt	(1.3)	(0.8)	(1.4)
Other	(5.7)	(0.4)	(0.6)
Net cash provided by (used in) financing activities	346.3	78.9	(88.5)
Additions to property, plant and equipment	(69.2)	(66.9)	(95.8)
Acquisition of business, net of cash acquired	(26.1)	(176.9)	(12.7)
Other	35.0	15.6	51.7
Net cash provided by (used in) investing activities	(60.3)	(228.2)	(56.8)
Effect of exchange rate changes on cash	(52.7)	(144.7)	(22.3)
Net increase (decrease) in cash and cash equivalents	(15.5)	(57.5)	15.2
Cash and cash equivalents at beginning of period	426.7	484.2	469.0
Cash and cash equivalents at end of period	411.2	426.7	484.2
Eliminations
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities:	(9.2)	(19.1)	(8.9)
(Payments on) proceeds from intercompany transactions	4.6	19.1	(7.4)
Net cash provided by (used in) financing activities	4.6	$ 19.1	(7.4)
Intercompany investing activities, net	4.6		16.3
Net cash provided by (used in) investing activities	$ 4.6		$ 16.3