Condensed Consolidating Supplemental Guarantor Information Cash Flows (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Net cash provided by (used in) operating activities	$ 235	$ 16
Expenditures for property, plant and equipment	88	80
Proceeds from Sale of Property, Plant, and Equipment	0	10
Additions to capitalized software	109	75
Business acquisitions, net of cash acquired	1,647	696
Proceeds from (payment of) of intercompany notes	0	0
Investments in equity affiliates	0	0
Changes in restricted cash	1,114	0
Other investing activities, net	(4)	(5)
Net cash used in investing activities	(726)	(836)
Tax witholding payments on behalf of employees	28	28
Short term borrowings, net	2	(1)
Proceeds from employee stock plans	10	52
Equity contribution	0	0
Payments on term credit facility	(20)	(35)
Borrowings on term credit facility	250	300
Payments on revolving credit facility	528	845
Borrowings on revolving credit facility	690	845
Debt issuance costs	(3)	(12)
Dividend distribution to consolidated subsidiaries	0	0
Other financing activities	(3)	0
Borrowings (repayments) of intercompany notes	0	0
Net cash provided by (used in) financing activities	370	276
Net cash provided by (used in) operating activities	28	(51)
Effect of exchange rate changes on cash and cash equivalents	(11)	(14)
Decrease in cash and cash equivalents	(104)	(609)
Cash and cash equivalents	424	460	528	1,069
Parent Company [Member]
Net cash provided by (used in) operating activities	146	(78)
Expenditures for property, plant and equipment	40	26
Proceeds from Sale of Property, Plant, and Equipment		2
Additions to capitalized software	62	53
Business acquisitions, net of cash acquired	1,647	24
Proceeds from (payment of) of intercompany notes	40	(302)
Investments in equity affiliates	2	277
Changes in restricted cash	1,114
Other investing activities, net	3	(5)
Net cash used in investing activities	(600)	(675)
Tax witholding payments on behalf of employees	28	28
Short term borrowings, net	0	0
Proceeds from employee stock plans	10	52
Equity contribution	0	0
Payments on term credit facility	(20)	(35)
Borrowings on term credit facility	250	300
Payments on revolving credit facility	528	845
Borrowings on revolving credit facility	690	845
Debt issuance costs	(3)	(12)
Dividend distribution to consolidated subsidiaries	0	0
Other financing activities	0
Borrowings (repayments) of intercompany notes	0	0
Net cash provided by (used in) financing activities	371	277
Net cash provided by (used in) operating activities	28	(51)
Effect of exchange rate changes on cash and cash equivalents	0	0
Decrease in cash and cash equivalents	(55)	(527)
Cash and cash equivalents	20	44	75	571
Guarantor Subsidiary [Member]
Net cash provided by (used in) operating activities	(90)	18
Expenditures for property, plant and equipment	0	0
Proceeds from Sale of Property, Plant, and Equipment		0
Additions to capitalized software	0	0
Business acquisitions, net of cash acquired	0	0
Proceeds from (payment of) of intercompany notes	87	0
Investments in equity affiliates	0	0
Changes in restricted cash	0
Other investing activities, net	0	0
Net cash used in investing activities	87	0
Tax witholding payments on behalf of employees	0	0
Short term borrowings, net	0	0
Proceeds from employee stock plans	0	0
Equity contribution	0	0
Payments on term credit facility	0	0
Borrowings on term credit facility	0	0
Payments on revolving credit facility	0	0
Borrowings on revolving credit facility	0	0
Debt issuance costs	0	0
Dividend distribution to consolidated subsidiaries	0	0
Other financing activities	0
Borrowings (repayments) of intercompany notes	0	0
Net cash provided by (used in) financing activities	0	0
Net cash provided by (used in) operating activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	(2)
Decrease in cash and cash equivalents	(3)	16
Cash and cash equivalents	8	22	11	6
Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	208	105
Expenditures for property, plant and equipment	48	54
Proceeds from Sale of Property, Plant, and Equipment		8
Additions to capitalized software	47	22
Business acquisitions, net of cash acquired	0	672
Proceeds from (payment of) of intercompany notes	0	0
Investments in equity affiliates	0	0
Changes in restricted cash	0
Other investing activities, net	(7)	0
Net cash used in investing activities	(88)	(740)
Tax witholding payments on behalf of employees	0	0
Short term borrowings, net	2	(1)
Proceeds from employee stock plans	0	0
Equity contribution	2	277
Payments on term credit facility	0	0
Borrowings on term credit facility	0	0
Payments on revolving credit facility	0	0
Borrowings on revolving credit facility	0	0
Debt issuance costs	0	0
Dividend distribution to consolidated subsidiaries	(29)	(29)
Other financing activities	(3)
Borrowings (repayments) of intercompany notes	(127)	302
Net cash provided by (used in) financing activities	(155)	549
Net cash provided by (used in) operating activities	0	0
Effect of exchange rate changes on cash and cash equivalents	(11)	(12)
Decrease in cash and cash equivalents	(46)	(98)
Cash and cash equivalents	396	394	442	492
Consolidation, Eliminations [Member]
Net cash provided by (used in) operating activities	(29)	(29)
Expenditures for property, plant and equipment	0	0
Proceeds from Sale of Property, Plant, and Equipment		0
Additions to capitalized software	0	0
Business acquisitions, net of cash acquired	0	0
Proceeds from (payment of) of intercompany notes	(127)	302
Investments in equity affiliates	(2)	(277)
Changes in restricted cash	0
Other investing activities, net	0	0
Net cash used in investing activities	(125)	579
Tax witholding payments on behalf of employees	0	0
Short term borrowings, net	0	0
Proceeds from employee stock plans	0	0
Equity contribution	(2)	(277)
Payments on term credit facility	0	0
Borrowings on term credit facility	0	0
Payments on revolving credit facility	0	0
Borrowings on revolving credit facility	0	0
Debt issuance costs	0	0
Dividend distribution to consolidated subsidiaries	29	29
Other financing activities	0
Borrowings (repayments) of intercompany notes	127	(302)
Net cash provided by (used in) financing activities	154	(550)
Net cash provided by (used in) operating activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Decrease in cash and cash equivalents	0	0
Cash and cash equivalents	$ 0	$ 0	$ 0	$ 0