Condensed Consolidating Statements of Cash Flows (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net	$ (258.1)	$ (206.2)
Net change in short-term debt	(5.5)	4.2
Proceeds from issuance of long-term debt	690.2	253.0
Payments on long-term debt	(30.1)	(188.5)
Issuance (repurchase) of common stock, net	(193.9)	(264.8)
Excess tax benefits from stock-based compensation	33.3	2.2
Other	(17.6)	(5.1)
Net cash provided by (used in) financing activities	476.4	(199.0)
Additions to property, plant and equipment	(41.1)	(24.7)
Other	3.3	(1.9)
Net cash used in investing activities	(37.8)	(26.6)
Effect of exchange rate changes on cash	(2.8)	(22.3)
Net decrease in cash and cash equivalents	177.7	(454.1)
Cash and cash equivalents at beginning of period	1,128.5	1,034.1
Cash and cash equivalents at end of period	1,306.2	580.0
Parent Company
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net	(97.0)	(56.4)
(Payments on) proceeds from intercompany transactions	(164.5)	(146.2)
Proceeds from issuance of long-term debt	690.0	250.0
Payments on long-term debt	(29.7)	(187.7)
Issuance (repurchase) of common stock, net	(193.9)	(264.8)
Excess tax benefits from stock-based compensation	33.3	2.2
Other	(16.0)	(5.1)
Net cash provided by (used in) financing activities	319.2	(351.6)
Additions to property, plant and equipment	(2.3)	(0.1)
Other		(0.5)
Net cash used in investing activities	(2.3)	(0.6)
Net decrease in cash and cash equivalents	219.9	(408.6)
Cash and cash equivalents at beginning of period	630.8	560.2
Cash and cash equivalents at end of period	850.7	151.6
Guarantor Subsidiaries
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net	(52.7)	23.7
(Payments on) proceeds from intercompany transactions	75.8	(11.5)
Proceeds from issuance of long-term debt	0.2
Payments on long-term debt	(0.4)	(0.1)
Other	(1.0)
Net cash provided by (used in) financing activities	74.6	(11.6)
Additions to property, plant and equipment	(24.8)	(13.8)
Other	(1.9)	0.6
Net cash used in investing activities	(26.7)	(13.2)
Net decrease in cash and cash equivalents	(4.8)	(1.1)
Cash and cash equivalents at beginning of period	13.5	5.0
Cash and cash equivalents at end of period	8.7	3.9
Non-Guarantor Subsidiaries
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net	(103.3)	(172.8)
Net change in short-term debt	(5.5)	4.2
(Payments on) proceeds from intercompany transactions	83.6	157.0
Proceeds from issuance of long-term debt		3.0
Payments on long-term debt		(0.7)
Other	(0.6)
Net cash provided by (used in) financing activities	77.5	163.5
Additions to property, plant and equipment	(14.0)	(10.8)
Other	5.2	(2.0)
Net cash used in investing activities	(8.8)	(12.8)
Effect of exchange rate changes on cash	(2.8)	(22.3)
Net decrease in cash and cash equivalents	(37.4)	(44.4)
Cash and cash equivalents at beginning of period	484.2	468.9
Cash and cash equivalents at end of period	446.8	424.5
Eliminations
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Net cash provided by (used in) operating activities, net	(5.1)	(0.7)
(Payments on) proceeds from intercompany transactions	5.1	0.7
Net cash provided by (used in) financing activities	$ 5.1	$ 0.7