Consolidating Guarantor Financial Information (Schedule of Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 1,195	$ 745
Investing Activities
Capital expenditures on property, plant and equipment	(244)	(180)
Acquisitions, net of cash acquired	(144)	(269)
Proceeds from sale of businesses and assets, net	13	1
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	0	0
Other, net	(34)	(9)
Net cash provided by (used in) investing activities	(409)	(457)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(86)	224
Proceeds from short-term borrowings	44	150
Repayments of short-term borrowings	(62)	(91)
Proceeds from long-term debt	0	0
Repayments of long-term debt	(56)	(65)
Purchases of treasury stock, including related fees	(250)	(500)
Dividends to parent	0	0
Contributions from parent	0
Proceeds from Stock Options Exercised	0	1
Common stock dividends	(209)	(178)
Return of capital to parent	0	0
(Distributions to) contributions from noncontrolling interests	(14)	(18)
Other, net	(6)	(19)
Net cash provided by (used in) financing activities	(639)	(496)
Exchange rate effects on cash and cash equivalents	(20)	31
Net increase (decrease) in cash and cash equivalents	127	(177)
Cash and cash equivalents as of beginning of period	576	638
Cash and cash equivalents as of end of period	703	461
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	459	677
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	(250)	(500)
Dividends to parent	0	0
Contributions from parent	0
Proceeds from Stock Options Exercised		1
Common stock dividends	(209)	(178)
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	(459)	(677)
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	567	623
Investing Activities
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	0	(11)
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)	(327)	(174)
Other, net	0	0
Net cash provided by (used in) investing activities	(327)	(185)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(33)	245
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	285	0
Repayments of long-term debt	(19)	0
Purchases of treasury stock, including related fees	0	0
Dividends to parent	(459)	(678)
Contributions from parent	0
Proceeds from Stock Options Exercised		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	(226)	(433)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	14	5
Cash and cash equivalents as of beginning of period	0	0
Cash and cash equivalents as of end of period	14	5
Subsidiary Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	224	571
Investing Activities
Capital expenditures on property, plant and equipment	(163)	(122)
Acquisitions, net of cash acquired	(144)	(12)
Proceeds from sale of businesses and assets, net	0	0
Return of capital from subsidiary	225	18
Contributions to subsidiary	(16)	0
Intercompany loan receipts (disbursements)	(12)	(25)
Other, net	(7)	(1)
Net cash provided by (used in) investing activities	(117)	(142)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	11	5
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	327	174
Repayments of long-term debt	(13)	(1)
Purchases of treasury stock, including related fees	0	0
Dividends to parent	(611)	(571)
Contributions from parent	0
Proceeds from Stock Options Exercised		0
Common stock dividends	0	0
Return of capital to parent	0	0
(Distributions to) contributions from noncontrolling interests	0	0
Other, net	(5)	(17)
Net cash provided by (used in) financing activities	(291)	(410)
Exchange rate effects on cash and cash equivalents	0	0
Net increase (decrease) in cash and cash equivalents	(184)	19
Cash and cash equivalents as of beginning of period	230	51
Cash and cash equivalents as of end of period	46	70
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	1,015	403
Investing Activities
Capital expenditures on property, plant and equipment	(81)	(58)
Acquisitions, net of cash acquired	0	(265)
Proceeds from sale of businesses and assets, net	13	20
Return of capital from subsidiary	0	0
Contributions to subsidiary	0	0
Intercompany loan receipts (disbursements)	(285)	0
Other, net	(27)	(8)
Net cash provided by (used in) investing activities	(380)	(311)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(52)	(1)
Proceeds from short-term borrowings	44	150
Repayments of short-term borrowings	(62)	(91)
Proceeds from long-term debt	0	0
Repayments of long-term debt	(24)	(64)
Purchases of treasury stock, including related fees	0	0
Dividends to parent	0	(280)
Contributions from parent	16
Proceeds from Stock Options Exercised		0
Common stock dividends	0	0
Return of capital to parent	(225)	(18)
(Distributions to) contributions from noncontrolling interests	(14)	(18)
Other, net	(1)	(2)
Net cash provided by (used in) financing activities	(318)	(324)
Exchange rate effects on cash and cash equivalents	(20)	31
Net increase (decrease) in cash and cash equivalents	297	(201)
Cash and cash equivalents as of beginning of period	346	587
Cash and cash equivalents as of end of period	643	386
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(1,070)	(1,529)
Investing Activities
Capital expenditures on property, plant and equipment	0	0
Acquisitions, net of cash acquired	0	19
Proceeds from sale of businesses and assets, net	0	(19)
Return of capital from subsidiary	(225)	(18)
Contributions to subsidiary	16	0
Intercompany loan receipts (disbursements)	624	199
Other, net	0	0
Net cash provided by (used in) investing activities	415	181
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(12)	(25)
Proceeds from short-term borrowings	0	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	(612)	(174)
Repayments of long-term debt	0	0
Purchases of treasury stock, including related fees	0	0
Dividends to parent	1,070	1,529
Contributions from parent	(16)
Proceeds from Stock Options Exercised		0
Common stock dividends	0	0
Return of capital to parent	225	18
(Distributions to) contributions from noncontrolling interests	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	655	1,348
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