XML 85 R60.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Allowance for Loan Losses - Allowance for Credit Losses and Recorded Investments in Loans (Detail) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Apr. 29, 2014 | Dec. 31, 2015 USD ($) SecurityLoan | Dec. 31, 2014 USD ($) SecurityLoan | Dec. 31, 2013 USD ($)
Allowance for Loan Losses |  |  |  |
Beginning balance |  | $ 83,842 | $ 68,081 | $ 69,189
Total provision |  | 88,349 | 85,529 | 69,339
Charge-offs |  | (57,939) | (17,438) | (2,037)
Recoveries |  | 5,820 | 1,155 | 0
Net charge-offs |  | (52,119) | (16,283) | (2,037)
Student loan sales |  | (7,565) | (53,485) | (68,410)
Ending Balance |  | 112,507 | 83,842 | 68,081
Allowance: |  |  |  |
Ending balance: individually evaluated for impairment |  | 43,480 | 9,815 | 0
Ending balance: collectively evaluated for impairment |  | 69,027 | 74,027 | 68,081
Loans: |  |  |  |
Ending balance: individually evaluated for impairment |  | 265,831 | 59,402 | 0
Ending balance: collectively evaluated for impairment |  | 11,446,269 | 9,516,781 | 7,990,314
Period of delinquent loans sold to subsidiary (greater than) | 90 days |  |  |
FFELP Loans |  |  |  |
Allowance for Loan Losses |  |  |  |
Beginning balance |  | 5,268 | 6,318 | 3,971
Total provision |  | 1,005 | 1,946 | 4,384
Charge-offs |  | (2,582) | (2,996) | (2,037)
Recoveries |  | 0 | 0 | 0
Net charge-offs |  | (2,582) | (2,996) | (2,037)
Student loan sales |  | 0 | 0 | 0
Ending Balance |  | 3,691 | 5,268 | 6,318
Allowance: |  |  |  |
Ending balance: individually evaluated for impairment |  | 0 | 0 | 0
Ending balance: collectively evaluated for impairment |  | 3,691 | 5,268 | 6,318
Loans: |  |  |  |
Ending balance: individually evaluated for impairment |  | 0 | 0 | 0
Ending balance: collectively evaluated for impairment |  | $ 1,115,663 | $ 1,264,807 | $ 1,426,972
Net charge-offs as a percentage of average loans in repayment |  | 0.30% | 0.31% | 0.23%
Allowance as a percentage of the ending total loan balance |  | 0.33% | 0.42% | 0.44%
Allowance as a percentage of the ending loans in repayment |  | 0.45% | 0.57% | 0.62%
Allowance coverage of net charge-offs |  | 1.43 | 1.76 | 3.10
Ending total loans, gross |  | $ 1,115,663 | $ 1,264,807 | $ 1,426,972
Average loans in repayment |  | 857,359 | 972,390 | 870,460
Ending loans in repayment |  | 813,815 | 926,891 | 1,023,471
Private Education Loans |  |  |  |
Allowance for Loan Losses |  |  |  |
Beginning balance |  | 78,574 | 61,763 | 65,218
Total provision |  | 87,344 | 83,583 | 64,955
Charge-offs |  | (55,357) | (14,442) | 0
Recoveries |  | 5,820 | 1,155 | 0
Net charge-offs |  | (49,537) | (13,287) | 0
Student loan sales |  | (7,565) | (53,485) | (68,410)
Ending Balance |  | 108,816 | 78,574 | 61,763
Allowance: |  |  |  |
Ending balance: individually evaluated for impairment |  | 43,480 | 9,815 | 0
Ending balance: collectively evaluated for impairment |  | 65,336 | 68,759 | 61,763
Loans: |  |  |  |
Ending balance: individually evaluated for impairment |  | 265,831 | 59,402 | 0
Ending balance: collectively evaluated for impairment |  | $ 10,330,606 | $ 8,251,974 | $ 6,563,342
Net charge-offs as a percentage of average loans in repayment |  | 0.82% | 0.30% | 0.00%
Allowance as a percentage of the ending total loan balance |  | 1.03% | 0.95% | 0.94%
Allowance as a percentage of the ending loans in repayment |  | 1.57% | 1.53% | 1.55%
Allowance coverage of net charge-offs |  | 2.20 | 5.91 | 0.00
Ending total loans, gross |  | $ 10,596,437 | $ 8,311,376 | $ 6,563,342
Average loans in repayment |  | 6,031,741 | 4,495,709 | 3,509,502
Ending loans in repayment |  | $ 6,927,266 | $ 5,149,215 | $ 3,972,317

X
- Definition Allowance. + References No definition available. + Details
Name: | slm_AllowanceAbstract
Namespace Prefix: | slm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Allowance as a percentage of the ending total loan balance. + References No definition available. + Details
Name: | slm_AllowanceAsPercentageOfEndingLoanBalance
Namespace Prefix: | slm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Allowance as a percentage of the ending loans in repayment. + References No definition available. + Details
Name: | slm_AllowanceAsPercentageOfEndingLoansInRepayment
Namespace Prefix: | slm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Allowance coverage of charge offs average loans in repayment. + References No definition available. + Details
Name: | slm_AllowanceCoverageOfChargeOffsAverageLoansInRepayment
Namespace Prefix: | slm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Allowance coverage of charge-offs ending total loans. + References No definition available. + Details
Name: | slm_AllowanceCoverageOfChargeOffsEndingLoans
Namespace Prefix: | slm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Allowance coverage of charge-offs Ending loans in repayment. + References No definition available. + Details
Name: | slm_AllowanceCoverageOfChargeOffsEndingLoansInRepayment
Namespace Prefix: | slm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Annualized allowance on private education loan coverage of charge offs. + References No definition available. + Details
Name: | slm_AnnualizedAllowanceOnPrivateEducationLoanCoverageOfChargeOffs
Namespace Prefix: | slm_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Charge offs as percentage of average loans in repayment. + References No definition available. + Details
Name: | slm_ChargeOffsAsPercentageOfAverageLoansInRepayment
Namespace Prefix: | slm_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans. + References No definition available. + Details
Name: | slm_LoansAbstract
Namespace Prefix: | slm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of Loans Delinquent Sold to Subsidiary + References No definition available. + Details
Name: | slm_PeriodofLoansDelinquentSoldtoSubsidiary
Namespace Prefix: | slm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of recoveries of receivables doubtful of collection that were previously charged off. + References No definition available. + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of direct write-downs of accounts receivable charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51673446&loc=SL9156395-115594 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of reduction of allowance reserve for credit loss arising from sale of loan and lease portfolios. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_AllowanceForLoanAndLeaseLossesLoansSold
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_AllowanceForLoanAndLeaseLossesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after recoveries, of loans and leases that have been written-off. + References No definition available. + Details
Name: | us-gaap_AllowanceForLoanAndLeaseLossesWriteoffsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + 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 (h) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + 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 (h) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + 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 (g) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section L -Subsection 1 + Details
Name: | us-gaap_LoansAndLeasesReceivableAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of expense related to estimated loss from loan and lease transactions. + 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 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_ProvisionForLoanAndLeaseLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivablesByIndustryOfCounterpartyTypeAxis=slm_FfelpLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivablesByIndustryOfCounterpartyTypeAxis=slm_PrivateEducationLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |