XML 32 R47.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Investments (Details 1) - USD ($) $ in Millions | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
U.S. Government and government agencies [Member] |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized Loss - Less than twelve months | $ 0 | $ 0
Fair Value - Less than twelve months | $ 55 | $ 39
Fair Value as % of Cost - Less than twelve months | 100.00% | 100.00%
Unrealized Loss - Twelve months or more | $ (2) | $ (2)
Fair Value - Twelve months or more | $ 15 | $ 15
Fair Value as % of Cost - Twelve months or more | 88.00% | 88.00%
States, municipalities and political subdivisions [Member] |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized Loss - Less than twelve months | $ (50) | $ (2)
Fair Value - Less than twelve months | $ 2,059 | $ 222
Fair Value as % of Cost - Less than twelve months | 98.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (4) | $ (8)
Fair Value - Twelve months or more | $ 55 | $ 408
Fair Value as % of Cost - Twelve months or more | 93.00% | 98.00%
Residential Mortgage Backed Securities [Member] |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized Loss - Less than twelve months | $ (5) | $ (4)
Fair Value - Less than twelve months | $ 338 | $ 298
Fair Value as % of Cost - Less than twelve months | 99.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (8) | $ (11)
Fair Value - Twelve months or more | $ 208 | $ 209
Fair Value as % of Cost - Twelve months or more | 96.00% | 95.00%
Commercial Mortgage Backed Securities [Member] |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized Loss - Less than twelve months | $ (1) | $ (1)
Fair Value - Less than twelve months | $ 43 | $ 38
Fair Value as % of Cost - Less than twelve months | 98.00% | 97.00%
Unrealized Loss - Twelve months or more | $ 0 | $ 0
Fair Value - Twelve months or more | $ 19 | $ 11
Fair Value as % of Cost - Twelve months or more | 100.00% | 100.00%
Asset-backed Securities [Member] |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized Loss - Less than twelve months | $ (10) | $ (11)
Fair Value - Less than twelve months | $ 1,144 | $ 1,389
Fair Value as % of Cost - Less than twelve months | 99.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (4) | $ (11)
Fair Value - Twelve months or more | $ 361 | $ 622
Fair Value as % of Cost - Twelve months or more | 99.00% | 98.00%
All other corporate [Member] |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized Loss - Less than twelve months | $ (80) | $ (16)
Fair Value - Less than twelve months | $ 3,335 | $ 588
Fair Value as % of Cost - Less than twelve months | 98.00% | 97.00%
Unrealized Loss - Twelve months or more | $ (5) | $ (13)
Fair Value - Twelve months or more | $ 78 | $ 433
Fair Value as % of Cost - Twelve months or more | 94.00% | 97.00%
Fixed maturities [Member] |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized Loss - Less than twelve months | $ (146) | $ (34)
Fair Value - Less than twelve months | $ 6,974 | $ 2,574
Fair Value as % of Cost - Less than twelve months | 98.00% | 99.00%
Unrealized Loss - Twelve months or more | $ (23) | $ (45)
Fair Value - Twelve months or more | $ 736 | $ 1,698
Fair Value as % of Cost - Twelve months or more | 97.00% | 97.00%
Common stocks [Member] |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized Loss - Less than twelve months | $ (30) | $ (25)
Fair Value - Less than twelve months | $ 291 | $ 260
Fair Value as % of Cost - Less than twelve months | 91.00% | 91.00%
Unrealized Loss - Twelve months or more | $ 0 | $ 0
Fair Value - Twelve months or more | $ 0 | $ 0
Fair Value as % of Cost - Twelve months or more | 0.00% | 0.00%
Perpetual preferred stocks [Member] |  |
Available for sale securities in a continuous unrealized loss position |  |
Unrealized Loss - Less than twelve months | $ (2) | $ (1)
Fair Value - Less than twelve months | $ 105 | $ 45
Fair Value as % of Cost - Less than twelve months | 98.00% | 98.00%
Unrealized Loss - Twelve months or more | $ (3) | $ (4)
Fair Value - Twelve months or more | $ 23 | $ 55
Fair Value as % of Cost - Twelve months or more | 88.00% | 93.00%

X
- Definition Available for sale securities continuous unrealized loss position less than twelve months fair value as percentage of cost. + References No definition available. + Details
Name: | afg_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValueAsPercentageOfCost
Namespace Prefix: | afg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Available for sale securities continuous unrealized loss position twelve months or longer fair value as percentage of cost. + References No definition available. + Details
Name: | afg_AvailableforsaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValueAsPercentageOfCost
Namespace Prefix: | afg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USTreasuryAndGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_FixedMaturitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_PreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |