Fair Value Option - Long term debt (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value Disclosures [Abstract]
Fair Value - Commercial leveraged acquisition finance loans	$ 3	$ 465
Fair Value - Fixed rate long-term debt	1,893	2,016
Deposits at fair value	7,740	8,692
Fair Value - Structured Notes	5,693	5,264
Unpaid Principal Balance - Commercial acquisitions	3	486
Unpaid Principal Balance - Fixed rate long-term debt	1,750	1,750
Unpaid Principal Balance - Hybrid instruments structured deposits	7,539	8,399
Unpaid Principal Balance - Structured notes	$ 5,377	$ 5,030