XML 85 R67.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Auto Loans Receivable - Financing Receivable Credit Quality Indicators (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) fICOScore | Dec. 31, 2023 USD ($) fICOScore
Auto Loans Receivable |  |
Auto loans receivable, Originated in current year | $ 932.0 | $ 285.4
Auto loans receivable, Originated in year before current year | 141.8 | 84.6
Auto loans receivable, Originated two years before current year | 4.5 | 51.7
Auto loans receivable, Originated three years before current year | 20.6 | 17.3
Auto loans receivable, Originated four years before current year | 4.6 | 10.6
Auto loans receivable, Originated five years or more before current year | 0.3 | 1.6
Total auto loans receivable | 1,103.8 | 451.2
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |
Current-period gross write-offs, 2024 origination | 7.9 |
Current-period gross write-offs, 2023 origination | 26.6 |
Current-period gross write-offs, 2022 origination | 14.8 |
Current-period gross write-offs, 2021 origination | 8.3 |
Current-period gross write-offs, 2020 origination | 2.1 |
Current-period gross write-offs, Prior to 2020 origination | 0.8 |
Current-period gross write-offs | 60.5 | 68.3
Palladium |  |
Auto Loans Receivable |  |
Auto loans receivable, Originated in current year | 194.0 |
Auto loans receivable, Originated in year before current year | 0.0 |
Auto loans receivable, Originated two years before current year | 0.0 |
Auto loans receivable, Originated three years before current year | 0.0 |
Auto loans receivable, Originated four years before current year | 0.0 |
Auto loans receivable, Originated five years or more before current year | 0.0 |
Total auto loans receivable | $ 194.0 |
Palladium | Weighted Average [Member] |  |
Auto Loans Receivable |  |
Auto loans receivable, FICO Score | fICOScore | 734 |
Rhodium |  |
Auto Loans Receivable |  |
Auto loans receivable, Originated in current year | $ 147.6 | 27.6
Auto loans receivable, Originated in year before current year | 16.9 | 0.1
Auto loans receivable, Originated two years before current year | 0.1 | 0.0
Auto loans receivable, Originated three years before current year | 0.0 | 0.0
Auto loans receivable, Originated four years before current year | 0.0 | 0.0
Auto loans receivable, Originated five years or more before current year | 0.0 | 0.0
Total auto loans receivable | $ 164.6 | $ 27.7
Rhodium | Weighted Average [Member] |  |
Auto Loans Receivable |  |
Auto loans receivable, FICO Score | fICOScore | 702 | 701
Platinum |  |
Auto Loans Receivable |  |
Auto loans receivable, Originated in current year | $ 525.1 | $ 136.3
Auto loans receivable, Originated in year before current year | 82.3 | 14.7
Auto loans receivable, Originated two years before current year | 1.7 | 8.2
Auto loans receivable, Originated three years before current year | 4.0 | 3.3
Auto loans receivable, Originated four years before current year | 1.0 | 3.1
Auto loans receivable, Originated five years or more before current year | 0.1 | 0.5
Total auto loans receivable | $ 614.2 | $ 166.1
Platinum | Weighted Average [Member] |  |
Auto Loans Receivable |  |
Auto loans receivable, FICO Score | fICOScore | 651 | 644
Gold |  |
Auto Loans Receivable |  |
Auto loans receivable, Originated in current year | $ 64.9 | $ 64.3
Auto loans receivable, Originated in year before current year | 25.0 | 35.9
Auto loans receivable, Originated two years before current year | 1.3 | 18.5
Auto loans receivable, Originated three years before current year | 7.3 | 6.8
Auto loans receivable, Originated four years before current year | 1.6 | 4.5
Auto loans receivable, Originated five years or more before current year | 0.1 | 0.8
Total auto loans receivable | $ 100.2 | $ 130.8
Gold | Weighted Average [Member] |  |
Auto Loans Receivable |  |
Auto loans receivable, FICO Score | fICOScore | 623 | 612
Silver |  |
Auto Loans Receivable |  |
Auto loans receivable, Originated in current year | $ 0.3 | $ 50.2
Auto loans receivable, Originated in year before current year | 13.4 | 33.0
Auto loans receivable, Originated two years before current year | 1.2 | 16.2
Auto loans receivable, Originated three years before current year | 5.4 | 5.2
Auto loans receivable, Originated four years before current year | 1.2 | 2.8
Auto loans receivable, Originated five years or more before current year | 0.1 | 0.3
Total auto loans receivable | $ 21.6 | $ 107.7
Silver | Weighted Average [Member] |  |
Auto Loans Receivable |  |
Auto loans receivable, FICO Score | fICOScore | 574 | 583
Bronze |  |
Auto Loans Receivable |  |
Auto loans receivable, Originated in current year | $ 0.1 | $ 6.7
Auto loans receivable, Originated in year before current year | 4.0 | 0.7
Auto loans receivable, Originated two years before current year | 0.2 | 6.0
Auto loans receivable, Originated three years before current year | 2.8 | 1.5
Auto loans receivable, Originated four years before current year | 0.6 | 0.1
Auto loans receivable, Originated five years or more before current year | 0.0 | 0.0
Total auto loans receivable | $ 7.7 | $ 15.0
Bronze | Weighted Average [Member] |  |
Auto Loans Receivable |  |
Auto loans receivable, FICO Score | fICOScore | 551 | 556
Copper |  |
Auto Loans Receivable |  |
Auto loans receivable, Originated in current year | $ 0.0 | $ 0.3
Auto loans receivable, Originated in year before current year | 0.2 | 0.2
Auto loans receivable, Originated two years before current year | 0.0 | 2.8
Auto loans receivable, Originated three years before current year | 1.1 | 0.5
Auto loans receivable, Originated four years before current year | 0.2 | 0.1
Auto loans receivable, Originated five years or more before current year | 0.0 | 0.0
Total auto loans receivable | $ 1.5 | $ 3.9
Copper | Weighted Average [Member] |  |
Auto Loans Receivable |  |
Auto loans receivable, FICO Score | fICOScore | 562 | 558

X
- Definition FICO score for auto loans receivables. + References No definition available. + Details
Name: | an_FinancingReceivableCreditQualityFICOScore
Namespace Prefix: | an_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Financing Receivable Write Offs + References No definition available. + Details
Name: | an_FinancingReceivableWriteOffsAbstract
Namespace Prefix: | an_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAndFee
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=an_CreditProgramTierPalladiumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=an_CreditProgramTierRhodiumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=an_CreditProgramTierPlatinumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=an_CreditProgramTierGoldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=an_CreditProgramTierSilverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=an_CreditProgramTierBronzeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=an_CreditProgramTierCopperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |