Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Commitments and Contingencies

	September 30, 2016		December 31, 2015
	(Dollars in millions)
Letters of credit	$	2,952	$	3,033
Carrying amount of the liability for letters of credit	29		27
Investments in affordable housing and historic building rehabilitation projects:
Carrying amount	1,738		1,629
Amount of future funding commitments included in carrying amount	774		654
Lending exposure	549		292
Tax credits subject to recapture	393		355
Private equity and similar investments	340		289
Future funding commitments to consolidated private equity funds	210		231

Pledged Assets

The following table provides the total carrying amount of pledged assets by asset type, of which the majority are pursuant to agreements that do not permit the other party to sell or repledge the collateral. Assets related to employee benefit plans have been excluded from the following table.

	September 30, 2016		December 31, 2015
	(Dollars in millions)
Pledged securities	$	15,477	$	14,063
Pledged loans	73,464		69,070