Condensed Consolidated Balance Sheets - USD ($) shares in Thousands, $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Assets, Current [Abstract]
Cash and cash equivalents	$ 309	$ 390
Accounts receivable, net	1,374	1,286
Net receivable from former parent company	39	0
Other current assets	264	241
Total current assets	1,986	1,917
Assets
Land, buildings and equipment, net	262	283
Intangible assets, net	1,023	1,144
Goodwill	3,921	3,889
Other long-term assets	456	476
Total Assets	7,648	7,709
Liabilities, Current [Abstract]
Short-term debt and current portion of long-term debt	59	28
Accounts payable	106	164
Accrued compensation and benefits costs	247	269
Unearned income	196	206
Net payable to former parent company	0	124
Other current liabilities	604	611
Total current liabilities	1,212	1,402
Long-term debt	2,071	1,913
Pension and other benefit liabilities	171	172
Deferred taxes	592	619
Other long-term liabilities	143	173
Total Liabilities	4,189	4,279
Contingencies (See Note 11)
Series A Convertible Preferred Stock	142	142
Common Stock	2	2
Additional paid-in-capital	3,828	3,812
Retained deficit	(15)	0
Accumulated other comprehensive loss	(498)	(526)
Total Equity	3,317	3,288
Total Liabilities and Equity	$ 7,648	$ 7,709
Shares of common stock issued and outstanding	209,355	202,875
Shared of Series A convertible preferred stock issued and outstanding	120	120