Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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- Definition

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Purchased Credit Impaired Loans.

+ References

No definition available.

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- Details

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Loans and Allowance for Credit Losses, PCI Loans Outstanding (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2008
PCI Loans UPB [Member]
PCI loans [Abstract]
Total PCI loans (unpaid principal balance)	$ 20,928	$ 24,136	$ 98,200
PCI Loans UPB [Member] \| Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	18,312	20,803
PCI Loans UPB [Member] \| Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	175	192
PCI Loans Carrying Value [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	14,273	16,731
PCI Loans Carrying Value [Member] \| Commercial Real Estate Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	13	57
PCI Loans Carrying Value [Member] \| Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	263	677	18,700
PCI Loans Carrying Value [Member] \| Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	131	237
PCI Loans Carrying Value [Member] \| Real estate 1-4 family first mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	13,979	16,018
PCI Loans Carrying Value [Member] \| Real estate 1-4 family junior lien mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	31	36
PCI Loans Carrying Value [Member] \| Commercial real estate mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	119	383
PCI Loans Carrying Value [Member] \| Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	$ 14,010	$ 16,054	$ 40,100