Loans and Allowance for Loan Losses Loans and Allowance for Loan Losses (Details 15) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Loans disclosures
Transfers of loans from held for investment to held for sale, net	$ (230)	$ (81)
Proceeds from sale	347	49
Commercial portfolio
Loans disclosures
Transfers of loans from held for investment to held for sale, net	(234)	(81)
Proceeds from sale	347	49
Consumer portfolio
Loans disclosures
Transfers of loans from held for investment to held for sale, net	4	0
Proceeds from sale	$ 0	$ 0

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.

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- Definition

The amount of financing receivables reclassified to held for sale during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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The amount of any significant sales of financing receivables during the reporting period.

+ References

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