Fair Value Option - Long term debt (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value Option [Abstract]
Fair Value - Commercial syndicated loans	$ 753	$ 58
Fair Value - Fixed rate long-term debt	1,956	1,893
Deposits at fair value	7,637	7,740
Fair Value - Structured Notes	5,735	5,693
Unpaid Principal Balance - Commercial syndicated loans	753	59
Unpaid Principal Balance - Fixed rate long-term debt	1,750	1,750
Unpaid Principal Balance - Hybrid instruments structured deposits	7,407	7,539
Unpaid Principal Balance - Structured notes	$ 5,455	$ 5,377