Condensed Consolidating Supplemental Guarantor Information - Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Net cash provided by (used in) operating activities	$ (16)	$ (24)
Investing activities
Expenditures for property, plant and equipment	(22)	(29)
Additions to capitalized software	(43)	(42)
Proceeds from (payments of) intercompany notes	0	0
Investments in equity affiliates	0
Acquisitions	(6)	0
Other investing activities, net	3	(3)
Net cash used in investing activities	(68)	(74)
Financing activities
Short term borrowings, net	7	(1)
Payments on term credit facilities	(17)	(34)
Payments on revolving credit facilities	(375)	(498)
Borrowings on revolving credit facilities	430	613
Repurchases of Company common stock	0	(165)
Proceeds from employee stock plans	4	5
Equity contribution	0
Borrowings (repayments) of intercompany notes	0	0
Tax withholding payments on behalf of employees	(13)	(11)
Net cash provided by (used in) financing activities	36	(91)
Cash flows from discontinued operations
Net cash used in operating activities	(6)	(4)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	1	5
Decrease in cash, cash equivalents, and restricted cash	(53)	(188)
Cash, cash equivalents and restricted cash at beginning of period	476	543
Cash, cash equivalents and restricted cash at end of period	423	355
Reconciliation of cash, cash equivalents and restricted cash as shown in the Condensed Consolidated Statements of Cash Flows
Cash and cash equivalents			$ 414	$ 464	$ 348
Restricted cash included in other assets			9		7
Total cash, cash equivalents and restricted cash	476	543	423	476	355
Eliminations
Net cash provided by (used in) operating activities	0	0
Investing activities
Expenditures for property, plant and equipment	0	0
Additions to capitalized software	0	0
Proceeds from (payments of) intercompany notes	(59)	(179)
Investments in equity affiliates	(10)
Acquisitions	0
Other investing activities, net	0	0
Net cash used in investing activities	(69)	(179)
Financing activities
Short term borrowings, net	0	0
Payments on term credit facilities	0	0
Payments on revolving credit facilities	0	0
Borrowings on revolving credit facilities	0	0
Repurchases of Company common stock		0
Proceeds from employee stock plans	0	0
Equity contribution	10
Borrowings (repayments) of intercompany notes	59	179
Tax withholding payments on behalf of employees	0	0
Net cash provided by (used in) financing activities	69	179
Cash flows from discontinued operations
Net cash used in operating activities	0	0
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0	0
Decrease in cash, cash equivalents, and restricted cash	0	0
Cash, cash equivalents and restricted cash at beginning of period	0	0
Cash, cash equivalents and restricted cash at end of period	0	0
Reconciliation of cash, cash equivalents and restricted cash as shown in the Condensed Consolidated Statements of Cash Flows
Cash and cash equivalents			0	0	0
Restricted cash included in other assets			0		0
Total cash, cash equivalents and restricted cash	0	0	0	0	0
Parent Issuer
Net cash provided by (used in) operating activities	112	26
Investing activities
Expenditures for property, plant and equipment	(13)	(24)
Additions to capitalized software	(36)	(35)
Proceeds from (payments of) intercompany notes	29	54
Investments in equity affiliates	0
Acquisitions	(6)
Other investing activities, net	3	(3)
Net cash used in investing activities	(23)	(8)
Financing activities
Short term borrowings, net	0	(1)
Payments on term credit facilities	(17)	(34)
Payments on revolving credit facilities	(375)	(260)
Borrowings on revolving credit facilities	330	375
Repurchases of Company common stock		(165)
Proceeds from employee stock plans	4	5
Equity contribution	0
Borrowings (repayments) of intercompany notes	0	0
Tax withholding payments on behalf of employees	(13)	(11)
Net cash provided by (used in) financing activities	(71)	(91)
Cash flows from discontinued operations
Net cash used in operating activities	(6)	(4)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0	0
Decrease in cash, cash equivalents, and restricted cash	12	(77)
Cash, cash equivalents and restricted cash at beginning of period	7	98
Cash, cash equivalents and restricted cash at end of period	19	21
Reconciliation of cash, cash equivalents and restricted cash as shown in the Condensed Consolidated Statements of Cash Flows
Cash and cash equivalents			18	6	21
Restricted cash included in other assets			1		0
Total cash, cash equivalents and restricted cash	7	98	19	7	21
Guarantor Subsidiary
Net cash provided by (used in) operating activities	(22)	(124)
Investing activities
Expenditures for property, plant and equipment	0	0
Additions to capitalized software	0	0
Proceeds from (payments of) intercompany notes	30	125
Investments in equity affiliates	0
Acquisitions	0
Other investing activities, net	0	0
Net cash used in investing activities	30	125
Financing activities
Short term borrowings, net	0	0
Payments on term credit facilities	0	0
Payments on revolving credit facilities	0	0
Borrowings on revolving credit facilities	0	0
Repurchases of Company common stock		0
Proceeds from employee stock plans	0	0
Equity contribution	(10)
Borrowings (repayments) of intercompany notes	0	0
Tax withholding payments on behalf of employees	0	0
Net cash provided by (used in) financing activities	(10)	0
Cash flows from discontinued operations
Net cash used in operating activities	0	0
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0	0
Decrease in cash, cash equivalents, and restricted cash	(2)	1
Cash, cash equivalents and restricted cash at beginning of period	8	10
Cash, cash equivalents and restricted cash at end of period	6	11
Reconciliation of cash, cash equivalents and restricted cash as shown in the Condensed Consolidated Statements of Cash Flows
Cash and cash equivalents			6	8	11
Restricted cash included in other assets			0		0
Total cash, cash equivalents and restricted cash	8	10	6	8	11
Non-Guarantor Subsidiaries
Net cash provided by (used in) operating activities	(106)	74
Investing activities
Expenditures for property, plant and equipment	(9)	(5)
Additions to capitalized software	(7)	(7)
Proceeds from (payments of) intercompany notes	0	0
Investments in equity affiliates	10
Acquisitions	0
Other investing activities, net	0	0
Net cash used in investing activities	(6)	(12)
Financing activities
Short term borrowings, net	7	0
Payments on term credit facilities	0	0
Payments on revolving credit facilities	0	(238)
Borrowings on revolving credit facilities	100	238
Repurchases of Company common stock		0
Proceeds from employee stock plans	0	0
Equity contribution	0
Borrowings (repayments) of intercompany notes	(59)	(179)
Tax withholding payments on behalf of employees	0	0
Net cash provided by (used in) financing activities	48	(179)
Cash flows from discontinued operations
Net cash used in operating activities	0	0
Effect of exchange rate changes on cash, cash equivalents and restricted cash	1	5
Decrease in cash, cash equivalents, and restricted cash	(63)	(112)
Cash, cash equivalents and restricted cash at beginning of period	461	435
Cash, cash equivalents and restricted cash at end of period	398	323
Reconciliation of cash, cash equivalents and restricted cash as shown in the Condensed Consolidated Statements of Cash Flows
Cash and cash equivalents			390	450	316
Restricted cash included in other assets			8		7
Total cash, cash equivalents and restricted cash	$ 461	$ 435	$ 398	$ 461	$ 323