Amount of operating branches management plans to sell or consolidate as a result of the Branch Consolidation and Sales Plan.

No definition available.

+ Details

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Namespace Prefix:	fitb_
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Period Type:	instant

- Definition

Amount of parcels of land management plans to sell as a result of the Branch Consolidation and Sales Plan. Represents parcels of undeveloped land that had been acquired for for future branch expansion.

+ References

No definition available.

+ Details

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2611-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

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.

+ References

No definition available.

+ Details

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- Details

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- Details

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Bank Premises and Equipment - Additional Information (Detail) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2015
Branch Banking
Bank Premises And Equipment [Line Items]
Bank premises impairment	$ 2	$ 104	$ 18
Disposal Group Classified As Held For Sale [Member]
Bank Premises And Equipment [Line Items]
Operating Branch Locations				105
Parcels Of Undeveloped Land				31