Condensed Consolidating Statements of Cash Flows (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net	$ (320.6)	$ (258.1)
Net change in short-term debt	(60.2)	(5.5)
Proceeds from issuance of long-term debt	2.0	690.2
Payments on long-term debt	(12.2)	(30.1)
Issuance (repurchase) of common stock, net	(34.6)	(193.9)
Excess tax benefits from stock-based compensation	19.8	33.3
Other	(0.4)	(17.6)
Net cash provided by (used in) financing activities	(85.6)	476.4
Additions to property, plant and equipment	(48.1)	(41.1)
Acquisition of businesses, net of cash acquired	(33.2)
Other	39.9	3.3
Net cash provided by (used in) investing activities	(41.4)	(37.8)
Effect of exchange rate changes on cash	(36.6)	(2.8)
Net increase (decrease) in cash and cash equivalents	(484.2)	177.7
Cash and cash equivalents at beginning of period	1,164.8	1,128.5
Cash and cash equivalents at end of period	680.6	1,306.2
Parent Company
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net	(86.9)	(97.0)
(Payments on) proceeds from intercompany transactions	(292.4)	(164.5)
Proceeds from issuance of long-term debt	2.0	690.0
Payments on long-term debt	(11.8)	(29.7)
Issuance (repurchase) of common stock, net	(34.6)	(193.9)
Excess tax benefits from stock-based compensation	19.8	33.3
Other		(16.0)
Net cash provided by (used in) financing activities	(317.0)	319.2
Additions to property, plant and equipment	(3.7)	(2.3)
Net cash provided by (used in) investing activities	(3.7)	(2.3)
Net increase (decrease) in cash and cash equivalents	(407.6)	219.9
Cash and cash equivalents at beginning of period	728.8	630.8
Cash and cash equivalents at end of period	321.2	850.7
Guarantor Subsidiaries
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net	(172.0)	(52.7)
Net change in short-term debt	(0.2)
(Payments on) proceeds from intercompany transactions	223.5	75.8
Proceeds from issuance of long-term debt		0.2
Payments on long-term debt	(0.3)	(0.4)
Other	(0.4)	(1.0)
Net cash provided by (used in) financing activities	222.6	74.6
Additions to property, plant and equipment	(33.9)	(24.8)
Acquisition of businesses, net of cash acquired	(7.1)
Other	(0.4)	(1.9)
Net cash provided by (used in) investing activities	(41.4)	(26.7)
Net increase (decrease) in cash and cash equivalents	9.2	(4.8)
Cash and cash equivalents at beginning of period	9.3	13.5
Cash and cash equivalents at end of period	18.5	8.7
Non-Guarantor Subsidiaries
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net	(61.7)	(103.3)
Net change in short-term debt	(60.0)	(5.5)
(Payments on) proceeds from intercompany transactions	68.9	83.6
Payments on long-term debt	(0.1)
Other		(0.6)
Net cash provided by (used in) financing activities	8.8	77.5
Additions to property, plant and equipment	(10.5)	(14.0)
Acquisition of businesses, net of cash acquired	(26.1)
Other	40.3	5.2
Net cash provided by (used in) investing activities	3.7	(8.8)
Effect of exchange rate changes on cash	(36.6)	(2.8)
Net increase (decrease) in cash and cash equivalents	(85.8)	(37.4)
Cash and cash equivalents at beginning of period	426.7	484.2
Cash and cash equivalents at end of period	340.9	446.8
Eliminations
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net		(5.1)
(Payments on) proceeds from intercompany transactions		5.1
Net cash provided by (used in) financing activities		$ 5.1