Condensed Consolidating Supplemental Guarantor Information - Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net cash provided by (used in) operating activities	$ 43	$ 23
Expenditures for property, plant and equipment	(11)	(9)
Additions to capitalized software	(41)	(31)
Proceeds from (payment of) of intercompany notes	0	0
Investments in equity affiliates	0	0
Other investing activities, net	(1)	(8)
Net cash used in investing activities	(53)	(48)
Short term borrowings, net	3	(9)
Payments on term credit facility	(11)	(56)
Payments on revolving credit facility	(195)	(180)
Borrowings on revolving credit facility	480	511
Repurchases of Company common stock	(350)	(213)
Debt issuance costs	0	(8)
Proceeds from employee stock plans	3	3
Equity contribution	0	0
Borrowings (repayments from) intercompany notes	0	0
Tax withholding payments on behalf of employees	(22)	(6)
Net cash (used in) provided by financing activities	(92)	42
Net cash used in operating activities	(3)	(12)
Effect of exchange rate changes on cash and cash equivalents	8	0
(Decrease) increase in cash and cash equivalents	(97)	5
Cash and cash equivalents at beginning of period	498	328
Cash and cash equivalents at end of period	401	333
Eliminations
Net cash provided by (used in) operating activities	0	0
Expenditures for property, plant and equipment	0	0
Additions to capitalized software	0	0
Proceeds from (payment of) of intercompany notes	(57)	(47)
Investments in equity affiliates	2	6
Other investing activities, net	0	0
Net cash used in investing activities	(55)	(41)
Short term borrowings, net	0	0
Payments on term credit facility	0	0
Payments on revolving credit facility	0	0
Borrowings on revolving credit facility	0	0
Repurchases of Company common stock	0	0
Debt issuance costs		0
Proceeds from employee stock plans	0	0
Equity contribution	(2)	(6)
Borrowings (repayments from) intercompany notes	57	47
Tax withholding payments on behalf of employees	0	0
Net cash (used in) provided by financing activities	55	41
Net cash used in operating activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
(Decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Parent Issuer
Net cash provided by (used in) operating activities	236	184
Expenditures for property, plant and equipment	(4)	(3)
Additions to capitalized software	(27)	(18)
Proceeds from (payment of) of intercompany notes	57	17
Investments in equity affiliates	(2)	(6)
Other investing activities, net	(1)	(8)
Net cash used in investing activities	23	(18)
Short term borrowings, net	0	(4)
Payments on term credit facility	(11)	(56)
Payments on revolving credit facility	(155)	(100)
Borrowings on revolving credit facility	240	231
Repurchases of Company common stock	(350)	(213)
Debt issuance costs		(8)
Proceeds from employee stock plans	3	3
Equity contribution	0	0
Borrowings (repayments from) intercompany notes	0	0
Tax withholding payments on behalf of employees	(22)	(6)
Net cash (used in) provided by financing activities	(295)	(153)
Net cash used in operating activities	(3)	(12)
Effect of exchange rate changes on cash and cash equivalents	0	0
(Decrease) increase in cash and cash equivalents	(39)	1
Cash and cash equivalents at beginning of period	65	15
Cash and cash equivalents at end of period	26	16
Guarantor Subsidiary
Net cash provided by (used in) operating activities	1	(26)
Expenditures for property, plant and equipment	0	0
Additions to capitalized software	0	0
Proceeds from (payment of) of intercompany notes	0	30
Investments in equity affiliates	0	0
Other investing activities, net	0	0
Net cash used in investing activities	0	30
Short term borrowings, net	0	0
Payments on term credit facility	0	0
Payments on revolving credit facility	0	0
Borrowings on revolving credit facility	0	0
Repurchases of Company common stock	0	0
Debt issuance costs		0
Proceeds from employee stock plans	0	0
Equity contribution	0	0
Borrowings (repayments from) intercompany notes	0	0
Tax withholding payments on behalf of employees	0	0
Net cash (used in) provided by financing activities	0	0
Net cash used in operating activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	(2)
(Decrease) increase in cash and cash equivalents	1	2
Cash and cash equivalents at beginning of period	12	20
Cash and cash equivalents at end of period	13	22
Non-Guarantor Subsidiaries
Net cash provided by (used in) operating activities	(194)	(135)
Expenditures for property, plant and equipment	(7)	(6)
Additions to capitalized software	(14)	(13)
Proceeds from (payment of) of intercompany notes	0	0
Investments in equity affiliates	0	0
Other investing activities, net	0	0
Net cash used in investing activities	(21)	(19)
Short term borrowings, net	3	(5)
Payments on term credit facility	0	0
Payments on revolving credit facility	(40)	(80)
Borrowings on revolving credit facility	240	280
Repurchases of Company common stock	0	0
Debt issuance costs		0
Proceeds from employee stock plans	0	0
Equity contribution	2	6
Borrowings (repayments from) intercompany notes	(57)	(47)
Tax withholding payments on behalf of employees	0	0
Net cash (used in) provided by financing activities	148	154
Net cash used in operating activities	0	0
Effect of exchange rate changes on cash and cash equivalents	8	2
(Decrease) increase in cash and cash equivalents	(59)	2
Cash and cash equivalents at beginning of period	421	293
Cash and cash equivalents at end of period	$ 362	$ 295