Taxes on Income - Temporary Differences (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Legal and regulatory settlements	$ 45	$ 305
Employee compensation	91	99
Accrued expenses	72	94
Postretirement benefits	126	146
Unearned revenue	39	27
Allowance for doubtful accounts	12	13
Loss carryforwards	114	37
Other	18	14
Total deferred tax assets	517	735
Deferred tax liabilities:
Goodwill and intangible assets	(299)	(362)
Fixed assets	(9)	(8)
Other	0	0
Total deferred tax liabilities	(308)	(370)
Net deferred income tax asset (liability) before valuation allowance	209	365
Valuation allowance	(98)	(16)
Net deferred income tax asset (liability)	111	349
Reported as:
Current deferred tax assets	109	360
Current deferred tax liabilities	(8)	(2)
Non-current deferred tax assets	33	31
Non-current deferred tax liabilities	(23)	(40)
Net deferred income tax asset (liability)	$ 111	$ 349