Fair Value Option - Fair Value Option on Liabilities (Details) - USD ($) $ in Millions		Mar. 31, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Long-term debt		$ 1,326	$ 1,317
Due to affiliates		488	485
Total fixed rate debt accounted for under FVO		1,814	1,802
Unpaid principal balance of fixed rate debt accounted for under FVO	[1]	1,733	1,712
Change in debt balance from foreign currency translation adjustment		$ (289)	$ (310)

[1] Balance includes a foreign currency translation adjustment relating to our foreign denominated FVO debt which decreased the debt balance by $289 million at March 31, 2017 and decreased the debt balance by $310 million at December 31, 2016.