Income Taxes - Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Net operating loss carryforward - US	$ 409	$ 6
Net operating loss carryforward - Non-US	189	199
Market value difference of loan portfolio	166	349
Accruals	107	157
Tax Credits	131	2
Other	113	147
Total deferred tax assets before valuation allowance	1,115	860
Less: valuation allowance	(104)	(57)
Total deferred tax assets	1,011	803
Deferred tax liabilities:
Depreciable assets	645	300
Intangible assets	34	35
Accrued commissions	27	41
Deferred acquisition costs/revenue	116	50
Tax on unremitted earnings of non-U.S. entities	47	0
Other	40	56
Total deferred tax liabilities	909	482
Net deferred tax asset	$ 102	$ 321