Guarantor Financial Information - Condensed Consolidated Statement of Cash Flows (Unaudited) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Financial Statements Captions [Line Items]
Net cash (used in)/provided by operating activities	$ 40	$ 87
Investing activities:
Acquisition of subsidiaries and affiliates, net of cash acquired	(572)	(47)
Additions to property, plant and equipment and other assets	(17)	(28)
Additions to intangible assets	(97)	(81)
Net cash used in investing activities	(686)	(156)
Financing activities:
Net repayments under revolving credit facility		(164)
Repayment of debt	(6)	(25)
Proceeds from issuances of debt, net of issuance costs	495	496
Decrease in other short-term borrowings	(5)
Cash dividends paid to stockholders	(111)	(101)
Repurchase of common stock	(42)	(83)
Activity under stock plans	11	18
Proceeds from employee stock purchase plan	2
Capital leases	(12)	(8)
Settlement of intercompany and other financing activities	(3)	(3)
Net cash provided by financing activities	329	130
Effect of exchange-rate changes on cash and cash equivalents	14	14
Net (decrease)/increase in cash and cash equivalents	(303)	75
Cash and cash equivalents at beginning of period	754	357
Cash and cash equivalents at end of period	451	432
Parent
Condensed Financial Statements Captions [Line Items]
Net cash (used in)/provided by operating activities	(46)	(2)
Financing activities:
Cash dividends paid to stockholders	(111)	(101)
Repurchase of common stock	(42)	(83)
Activity under stock plans	15	32
Proceeds from employee stock purchase plan	2
Settlement of intercompany and other financing activities	186	159
Net cash provided by financing activities	50	7
Net (decrease)/increase in cash and cash equivalents	4	5
Cash and cash equivalents at beginning of period	5	1
Cash and cash equivalents at end of period	9	6
Issuers
Condensed Financial Statements Captions [Line Items]
Net cash (used in)/provided by operating activities	39	60
Financing activities:
Repayment of debt	(6)	(25)
Proceeds from issuances of debt, net of issuance costs	495	496
Settlement of intercompany and other financing activities	(511)	(513)
Net cash provided by financing activities	(22)	(42)
Net (decrease)/increase in cash and cash equivalents	17	18
Cash and cash equivalents at beginning of period	1
Cash and cash equivalents at end of period	18	18
Guarantor
Condensed Financial Statements Captions [Line Items]
Net cash (used in)/provided by operating activities	52	36
Investing activities:
Acquisition of subsidiaries and affiliates, net of cash acquired	(559)	(37)
Additions to property, plant and equipment and other assets	(13)	(20)
Additions to intangible assets	(83)	(72)
Net cash used in investing activities	(655)	(129)
Financing activities:
Net repayments under revolving credit facility		(164)
Activity under stock plans	(4)	(14)
Capital leases	(12)
Settlement of intercompany and other financing activities	359	352
Net cash provided by financing activities	343	174
Net (decrease)/increase in cash and cash equivalents	(260)	81
Cash and cash equivalents at beginning of period	219	7
Cash and cash equivalents at end of period	(41)	88
Non-Guarantor
Condensed Financial Statements Captions [Line Items]
Net cash (used in)/provided by operating activities	(5)	(7)
Investing activities:
Acquisition of subsidiaries and affiliates, net of cash acquired	(13)	(10)
Additions to property, plant and equipment and other assets	(4)	(8)
Additions to intangible assets	(14)	(9)
Net cash used in investing activities	(31)	(27)
Financing activities:
Decrease in other short-term borrowings	(5)
Capital leases		(8)
Settlement of intercompany and other financing activities	(37)	(1)
Net cash provided by financing activities	(42)	(9)
Effect of exchange-rate changes on cash and cash equivalents	14	14
Net (decrease)/increase in cash and cash equivalents	(64)	(29)
Cash and cash equivalents at beginning of period	529	349
Cash and cash equivalents at end of period	$ 465	$ 320