Amount of unpaid principal balance related to loans serviced for others.

No definition available.

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Namespace Prefix:	fnb_
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- Definition

Amount of fees and commissions from financial services and banking activities and correspondent clearing. Includes fees from depositor accounts, credit cards, merchant discounts, and fiduciary and trust activities, guarantee fees, investment advisory, management, and administrative fees, transfer agent fees, and insurance commissions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

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- Definition

Income from mortgage banking activities (fees and commissions) and servicing real estate mortgages, credit cards, and other financial assets held by others net of any related impairment of capitalized service costs. Also includes any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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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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LOAN SERVICING - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Servicing Assets at Fair Value [Line Items]
Service charges	$ 33,389	$ 25,804	$ 58,196	$ 46,938
Mortgage Servicing Rights [Member]
Servicing Assets at Fair Value [Line Items]
Unpaid principal balance of loans	2,800,000		2,800,000		$ 1,800,000
Mortgage servicing fees recorded in mortgage banking income			3,600	$ 1,800
SBA-Guaranteed Loan Servicing [Member]
Servicing Assets at Fair Value [Line Items]
Unpaid principal balance of loans	$ 313,400		313,400
Service charges			$ 1,100