Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Commitments and Contingencies

The following table summarizes certain commitments and contingencies. Refer to Note 13. Fair Value Disclosures for amounts related to off-balance sheet financial instruments.

(Dollars in millions)	Sep 30, 2018		Dec 31, 2017
Investments in affordable housing projects:
Carrying amount	$	2,083	$	1,948
Amount of future funding commitments included in carrying amount	955		928
Lending exposure	472		561
Tax credits subject to recapture	501		471
Private equity investments:
Carrying amount	491		471
Amount of future funding commitments not included in carrying amount	365		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.

(Dollars in millions)	Sep 30, 2018		Dec 31, 2017
Pledged securities	$	13,065	$	14,636
Pledged loans	76,610		74,718