Fair Value Option - Fair Value Option on Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Long-term debt		$ 3,257	$ 6,762
Due to affiliates		496	512
Total fixed rate debt accounted for under FVO		3,753	7,274
Unpaid principal balance of fixed rate debt accounted for under FVO	[1]	3,598	6,888
Fixed rate long-term debt not accounted for under FVO		4,074	5,863
Change in debt balance from foreign currency translation adjustment		$ 283	$ 146

[1] Balance includes a foreign currency translation adjustment relating to our foreign denominated FVO debt which decreased the debt balance by $283 million at December 31, 2015 and decreased the debt balance by $146 million at December 31, 2014.