Consolidating Guarantor Financial Information (Schedule of Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 638	$ 731
Investing Activities
Capital expenditures on property, plant and equipment	(207)	(144)
Acquisitions, net of cash acquired	(88)	(91)
Proceeds from sale of businesses and assets, net	3	0
Return of capital from subsidiary	0	0
Intercompany loan receipts (disbursements)	0	0
Other, net	(17)	(8)
Net cash provided by (used in) investing activities	(309)	(243)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(136)	105
Proceeds from short-term borrowings	306	0
Repayments of short-term borrowings	(50)	(12)
Proceeds from long-term debt	0	499
Repayments of long-term debt	(16)	(348)
Purchases of treasury stock, including related fees	(167)	(488)
Dividends to parent		0
Common stock dividends	(148)	(148)
Return of capital to parent	0	0
Distributions to noncontrolling interests	(13)	(7)
Other, net	(24)	(38)
Net cash provided by (used in) financing activities	(248)	(437)
Exchange rate effects on cash and cash equivalents	(5)	1
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	76	52
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	539	491	$ 463	$ 439
Parent Guarantor [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	315	636
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
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	(167)	(488)
Dividends to parent		0
Common stock dividends	(148)	(148)
Return of capital to parent	0	0
Distributions to noncontrolling interests	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	(315)	(636)
Exchange rate effects on cash and cash equivalents	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	0	0	0	0
Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(339)	(31)
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
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	(28)	149
Proceeds from short-term borrowings	300	0
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	339	499
Repayments of long-term debt	(272)	(335)
Purchases of treasury stock, including related fees	0	0
Dividends to parent		(272)
Common stock dividends	0	0
Return of capital to parent	0	0
Distributions to noncontrolling interests	0	0
Other, net	0	(10)
Net cash provided by (used in) financing activities	339	31
Exchange rate effects on cash and cash equivalents	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	0	0	0	0
Subsidiary Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	256	1,052
Investing Activities
Capital expenditures on property, plant and equipment	(127)	(83)
Acquisitions, net of cash acquired	(5)	(31)
Proceeds from sale of businesses and assets, net	0
Return of capital from subsidiary	23	7
Intercompany loan receipts (disbursements)	(88)	(653)
Other, net	(8)	2
Net cash provided by (used in) investing activities	(205)	(758)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(17)	3
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	(2)	(1)
Purchases of treasury stock, including related fees	0	0
Dividends to parent		(251)
Common stock dividends	0	0
Return of capital to parent	0	0
Distributions to noncontrolling interests	0	0
Other, net	(20)	(24)
Net cash provided by (used in) financing activities	(39)	(273)
Exchange rate effects on cash and cash equivalents	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	12	21
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	28	51	16	30
Non-Guarantors [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	406	635
Investing Activities
Capital expenditures on property, plant and equipment	(80)	(61)
Acquisitions, net of cash acquired	(83)	(60)
Proceeds from sale of businesses and assets, net	3
Return of capital from subsidiary	0	0
Intercompany loan receipts (disbursements)	(67)	0
Other, net	(9)	(10)
Net cash provided by (used in) investing activities	(236)	(131)
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	0	(4)
Proceeds from short-term borrowings	6	610
Repayments of short-term borrowings	(50)	(12)
Proceeds from long-term debt	0	0
Repayments of long-term debt	(17)	(12)
Purchases of treasury stock, including related fees	0	0
Dividends to parent		(1,038)
Common stock dividends	0	0
Return of capital to parent	(23)	(7)
Distributions to noncontrolling interests	(13)	(7)
Other, net	(4)	(4)
Net cash provided by (used in) financing activities	(101)	(474)
Exchange rate effects on cash and cash equivalents	(5)	1
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	64	31
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	511	440	447	409
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	0	(1,561)
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	(23)	(7)
Intercompany loan receipts (disbursements)	155	653
Other, net	0	0
Net cash provided by (used in) investing activities	132	646
Financing Activities
Net change in short-term borrowings with maturities of 3 months or less	(91)	(43)
Proceeds from short-term borrowings	0	(610)
Repayments of short-term borrowings	0	0
Proceeds from long-term debt	(339)	0
Repayments of long-term debt	275	0
Purchases of treasury stock, including related fees	0	0
Dividends to parent		1,561
Common stock dividends	0	0
Return of capital to parent	23	7
Distributions to noncontrolling interests	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	(132)	915
Exchange rate effects on cash and cash equivalents	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	0	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 0	$ 0	$ 0	$ 0