Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Commitments and Contingencies

The following table summarizes certain commitments and contingencies:

December 31, (Dollars in millions)	2018		2017
Investments in affordable housing projects:
Carrying amount	$	2,088	$	1,948
Amount of future funding commitments included in carrying amount	919		928
Lending exposure	460		561
Tax credits subject to recapture	523		471
Private equity investments:
Carrying amount	458		471
Amount of future funding commitments not included in carrying amount	331		143

Schedule of Pledged Assets

Certain assets were pledged to secure municipal deposits, securities sold under agreements to repurchase, borrowings and borrowing capacity, subject to any applicable asset discount, at the FHLB and FRB as well as for other purposes as required or permitted by law. 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 are excluded from the following table.

December 31, (Dollars in millions)	2018		2017
Pledged securities	$	13,237	$	14,636
Pledged loans	77,847		74,718