Variable Interest Entities - Summary of Assets and Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
Variable Interest Entity [Line Items]
Loan receivables, net		$ 71,993	$ 64,793
Other assets	[1]	2,122	2,080
Total assets		90,207	83,990
Total liabilities		76,011	71,386
Allowance for loan losses		4,344	3,497		$ 3,236	$ 2,892
Loan receivable, before allowance for losses	[2],[3]	76,337	68,290
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Loan receivables, net		22,892	24,338	[4]
Other assets		107	127	[5]
Total assets		22,999	24,465
Borrowings		12,388	13,589
Other liabilities		21	30
Total liabilities		12,409	13,619
Allowance for loan losses		1,100	1,100
Loan receivable, before allowance for losses		24,000	25,500
Other Assets | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Restricted cash and cash equivalents		$ 100	$ 118

[1] Other assets include restricted cash and equivalents of $347 million and $391 million at December 31, 2016 and 2015, respectively.

[2] At December 31, 2016 and 2015, loan receivables included deferred expense, net of deferred income, of $82 million and $63 million, respectively.

[3] Total loan receivables include $24.0 billion and $25.5 billion of restricted loans of consolidated securitization entities at December 31, 2016 and 2015, respectively. See Note 5. Variable Interest Entities for further information on these restricted loans.

[4] Includes $1.1 billion of related allowance for loan losses resulting in gross restricted loans of $24.0 billion and $25.5 billion at December 31, 2016 and 2015, respectively.

[5] Includes $100 million and $118 million of segregated funds held by the VIEs at December 31, 2016 and 2015, respectively, which are classified as restricted cash and equivalents and included as a component of other assets in our Consolidated Statements of Financial Position.