Consolidating Guarantor Financial Information (Schedule of Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 307	$ 143
Investing Activities
Capital expenditures on property, plant and equipment	(79)	(86)
Acquisitions, net of cash acquired	(91)	(144)
Proceeds from sale of businesses and assets, net	0	9
Return of capital from subsidiary	0	0
Contributions to subsidiary		0
Intercompany loan receipts (disbursements)	0	0
Other, net	(7)	(14)
Net cash provided by (used in) investing activities	(177)	(235)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	197	101
Proceeds from short-term borrowings	0	36
Repayments of short-term borrowings	(12)	(38)
Proceeds from long-term debt	0	0
Repayments of long-term debt	(7)	(31)
Purchases of treasury stock, including related fees	(212)	0
Dividends to parent	0	0
Contributions from parent		0
Proceeds from Stock Options Exercised	0	0
Common stock dividends	(70)	(63)
Return of capital to parent	0	0
(Distributions to) contributions from noncontrolling interests	(4)	(2)
Other, net	(22)	(5)
Net cash provided by (used in) financing activities	(130)	(2)
Exchange rate effects on cash and cash equivalents	2	8
Net increase (decrease) in cash and cash equivalents	2	(86)
Cash and cash equivalents as of beginning of period	439	576
Cash and cash equivalents as of end of period	441	490
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	282	63
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
Return of capital from subsidiary	0	0
Contributions to subsidiary		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
Repayments of long-term debt	0	0
Purchases of treasury stock, including related fees	(212)
Dividends to parent	0	0
Contributions from parent		0
Common stock dividends	(70)	(63)
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	(282)	(63)
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
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	26	277
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
Return of capital from subsidiary	0	0
Contributions to subsidiary		0
Intercompany loan receipts (disbursements)	0	(222)
Other, net	0	0
Net cash provided by (used in) investing activities	0	(222)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	246	15
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt		0
Repayments of long-term debt	0	(6)
Purchases of treasury stock, including related fees	0
Dividends to parent	(272)	(62)
Contributions from parent		0
Common stock dividends	0	0
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	(26)	(53)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	0	2
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	0	2
Subsidiary Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	1,032	(33)
Investing Activities
Capital expenditures on property, plant and equipment	(42)	(54)
Acquisitions, net of cash acquired	(31)	(144)
Proceeds from sale of businesses and assets, net		0
Return of capital from subsidiary	4	211
Contributions to subsidiary		(16)
Intercompany loan receipts (disbursements)	(646)	(15)
Other, net	2	(3)
Net cash provided by (used in) investing activities	(713)	(21)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(9)	2
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt		222
Repayments of long-term debt	0	(12)
Purchases of treasury stock, including related fees	0
Dividends to parent	(251)	(272)
Contributions from parent		0
Common stock dividends	0	0
Return of capital to parent	0	0
(Distributions to) contributions from noncontrolling interests	0	0
Other, net	(20)	(5)
Net cash provided by (used in) financing activities	(280)	(65)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	39	(119)
Cash and cash equivalents as of beginning of period	30	230
Cash and cash equivalents as of end of period	69	111
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	528	170
Investing Activities
Capital expenditures on property, plant and equipment	(37)	(32)
Acquisitions, net of cash acquired	(60)	0
Proceeds from sale of businesses and assets, net		9
Return of capital from subsidiary	0	0
Contributions to subsidiary		0
Intercompany loan receipts (disbursements)	0	0
Other, net	(9)	(11)
Net cash provided by (used in) investing activities	(106)	(34)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(4)	99
Proceeds from short-term borrowings	610	36
Repayments of short-term borrowings	(12)	(38)
Proceeds from long-term debt		0
Repayments of long-term debt	(7)	(13)
Purchases of treasury stock, including related fees	0
Dividends to parent	(1,038)	0
Contributions from parent		16
Common stock dividends	0	0
Return of capital to parent	(4)	(211)
(Distributions to) contributions from noncontrolling interests	(4)	(2)
Other, net	(2)	0
Net cash provided by (used in) financing activities	(461)	(113)
Exchange rate effects on cash and cash equivalents	2	8
Net increase (decrease) in cash and cash equivalents	(37)	31
Cash and cash equivalents as of beginning of period	409	346
Cash and cash equivalents as of end of period	372	377
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(1,561)	(334)
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
Return of capital from subsidiary	(4)	(211)
Contributions to subsidiary		16
Intercompany loan receipts (disbursements)	646	237
Other, net	0	0
Net cash provided by (used in) investing activities	642	42
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(36)	(15)
Proceeds from short-term borrowings	(610)	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt		(222)
Repayments of long-term debt	0	0
Purchases of treasury stock, including related fees	0
Dividends to parent	1,561	334
Contributions from parent		(16)
Common stock dividends	0	0
Return of capital to parent	4	211
(Distributions to) contributions from noncontrolling interests	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	919	292
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