Income Taxes - Schedule of Components of Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Unrealized losses on investment securities, net	$ 157	$ 57
Deferred compensation	285	167
Defined benefit pension plan	116	143
Restructuring charges and other reserves	199	383
Foreign currency translation	225	155
Tax credit carryforwards	425	0
Other	105	32
Total deferred tax assets	1,512	937
Valuation allowance for deferred tax assets	(66)	(27)
Deferred tax assets, net of valuation allowance	1,446	910
Deferred tax liabilities:
Leveraged lease financing	313	334
Fixed and intangible assets	886	804
Non-U.S. earnings	164	265
Other	120	121
Total deferred tax liabilities	$ 1,483	$ 1,524