Consolidating Guarantor Financial Information (Schedule of Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 192	$ 287
Investing Activities
Capital expenditures on property, plant and equipment	(62)	(70)
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	1	0
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	0
Other, net	(3)	(5)
Net cash provided by (used in) investing activities	(64)	(75)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	6	(344)
Proceeds from short-term borrowings	7	8
Repayments of short-term borrowings	(29)	(63)
Proceeds from long-term debt	0	170
Repayments of long-term debt	(53)	(177)
Purchases of treasury stock, including related fees	(128)	0
Dividends to parent	0	0
Contributions from parent	0	0
Stock option exercises	0	1
Series A common stock dividends	(51)	(44)
Return of capital to parent	0	0
(Distributions to) contributions from noncontrolling interests	(4)	0
Other, net	(18)	(24)
Net cash provided by (used in) financing activities	(270)	(473)
Exchange rate effects on cash and cash equivalents	5	10
Net increase (decrease) in cash and cash equivalents	(137)	(251)
Cash and cash equivalents as of beginning of period	638	967
Cash and cash equivalents as of end of period	501	716
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	179	44
Investing Activities
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	0
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	0
Other, net	0	0
Net cash provided by (used in) investing activities	0	0
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	0	0
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	0	0
Repayments of long-term debt	0	0
Purchases of treasury stock, including related fees	(128)	0
Dividends to parent	0	0
Contributions from parent	0	0
Stock option exercises	0	1
Series A common stock dividends	(51)	(44)
Return of capital to parent	0	0
(Distributions to) contributions from noncontrolling interests	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	(179)	(43)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	1
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	0	1
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	196	47
Investing Activities
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	(11)	0
Proceeds from sale of businesses and assets, net	0	0
Return of capital from subsidiary	0	136
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	138
Other, net	0	0
Net cash provided by (used in) investing activities	(11)	274
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(7)	(353)
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	0	250
Repayments of long-term debt	0	(172)
Purchases of treasury stock, including related fees	0	0
Dividends to parent	(178)	(44)
Contributions from parent	0	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	0	0
(Distributions to) contributions from noncontrolling interests	0	0
Other, net	0	(2)
Net cash provided by (used in) financing activities	(185)	(321)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	0	0
Subsidiary Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	210	(1)
Investing Activities
Capital expenditures on property, plant and equipment	(42)	(38)
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	0	0
Return of capital from subsidiary	5	734
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	7	3
Other, net	0	(3)
Net cash provided by (used in) investing activities	(30)	696
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	6	6
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	0	325
Repayments of long-term debt	0	(634)
Purchases of treasury stock, including related fees	0	0
Dividends to parent	(165)	(68)
Contributions from parent	0	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	0	0
(Distributions to) contributions from noncontrolling interests	0	0
Other, net	(16)	0
Net cash provided by (used in) financing activities	(175)	(371)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	5	324
Cash and cash equivalents as of beginning of period	51	21
Cash and cash equivalents as of end of period	56	345
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	130	309
Investing Activities
Capital expenditures on property, plant and equipment	(20)	(32)
Acquisitions, net of cash acquired	0	0
Proceeds from sale of businesses and assets, net	12	0
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	90
Other, net	(3)	(2)
Net cash provided by (used in) investing activities	(11)	56
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	0	0
Proceeds from short-term borrowings	7	8
Repayments of short-term borrowings	(29)	(63)
Proceeds from long-term debt	0	0
Repayments of long-term debt	(53)	(4)
Purchases of treasury stock, including related fees	0	0
Dividends to parent	(180)	0
Contributions from parent	0	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	(5)	(870)
(Distributions to) contributions from noncontrolling interests	(4)	0
Other, net	(2)	(22)
Net cash provided by (used in) financing activities	(266)	(951)
Exchange rate effects on cash and cash equivalents	5	10
Net increase (decrease) in cash and cash equivalents	(142)	(576)
Cash and cash equivalents as of beginning of period	587	946
Cash and cash equivalents as of end of period	445	370
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(523)	(112)
Investing Activities
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	11	0
Proceeds from sale of businesses and assets, net	(11)	0
Return of capital from subsidiary	(5)	(870)
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	(7)	(231)
Other, net	0	0
Net cash provided by (used in) investing activities	(12)	(1,101)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	7	3
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	0	(405)
Repayments of long-term debt	0	633
Purchases of treasury stock, including related fees	0	0
Dividends to parent	523	112
Contributions from parent	0	0
Stock option exercises	0	0
Series A common stock dividends	0	0
Return of capital to parent	5	870
(Distributions to) contributions from noncontrolling interests	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	535	1,213
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	$ 0	$ 0