XML 93 R76.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Long-Term Debt - Schedule of long-term debt (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Summary of Carrying value of long-term debt |  |
Principal | $ 1,318 | $ 1,308
Discount and Issue Costs | (17) | (25)
Carrying Value | 1,301 | 1,283
AFG |  |
Summary of Carrying value of long-term debt |  |
Carrying Value | 1,301 | 1,283
Senior Notes | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 1,018 | 1,008
Discount and Issue Costs | (7) | (15)
Carrying Value | 1,011 | 993
Senior Notes | 4.50% Senior Notes due June 2047 | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 590 | 0
Discount and Issue Costs | (2) | 0
Carrying Value | 588 | 0
Senior Notes | 3.50% Senior Notes due August 2026 | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 425 | 300
Discount and Issue Costs | (5) | (3)
Carrying Value | 420 | 297
Senior Notes | 9-7/8% Senior Notes due June 2019 | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 0 | 350
Discount and Issue Costs | 0 | (1)
Carrying Value | 0 | 349
Senior Notes | 6-3/8% Senior Notes due June 2042 | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 0 | 230
Discount and Issue Costs | 0 | (7)
Carrying Value | 0 | 223
Senior Notes | 5-3/4% Senior Notes due August 2042 | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 0 | 125
Discount and Issue Costs | 0 | (4)
Carrying Value | 0 | 121
Senior Notes | Other | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 3 | 3
Discount and Issue Costs | 0 | 0
Carrying Value | 3 | 3
Subordinated Debentures | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 300 | 300
Discount and Issue Costs | (10) | (10)
Carrying Value | 290 | 290
Subordinated Debentures | 6-1/4% Subordinated Debentures due September 2054 | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 150 | 150
Discount and Issue Costs | (5) | (5)
Carrying Value | 145 | 145
Subordinated Debentures | 6% Subordinated Debentures due November 2055 | AFG |  |
Summary of Carrying value of long-term debt |  |
Principal | 150 | 150
Discount and Issue Costs | (5) | (5)
Carrying Value | $ 145 | $ 145

X
- Definition Summary of Carrying value of long-term debt. + References No definition available. + Details
Name: | afg_SummaryOfCarryingValueOfLongTermDebtAbstract
Namespace Prefix: | afg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 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(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 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(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ConsolidatedEntitiesAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=afg_SeniorNotesDueInJune2047Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=afg_SeniorNotesDueInAugust2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=afg_SeniorNotesDueInJune2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=afg_SeniorNotesDueInJune2042Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=afg_SeniorNotesDueInAugust2042Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=afg_OtherLongtermDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SubordinatedDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=afg_SubordinatedDebenturesDueInSeptember2054Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=afg_SubordinatedDebenturesDueInNovember2055Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |