XML 83 R74.htm IDEA: XBRL DOCUMENT
v3.21.1

Loss and loss adjustment expense reserves - Schedule of payout percentage on losses (Details) | Dec. 31, 2020
--- | ---
Global A&H |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 23.30%
Year 2 | 31.60%
Year 3 | 34.10%
Year 4 | 30.40%
Year 5 | 0.00%
Year 6 | 0.00%
Year 7 | 0.00%
Year 8 | 0.00%
Year 9 | 0.00%
Marine & Energy |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 0.00%
Year 2 | 0.90%
Year 3 | 21.60%
Year 4 | 1.80%
Year 5 | 0.00%
Year 6 | 0.00%
Year 7 | 0.00%
Year 8 | 0.00%
Year 9 | 0.00%
Credit |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 12.70%
Year 2 | 22.20%
Year 3 | 26.90%
Year 4 | 11.60%
Year 5 | 3.10%
Year 6 | (1.10%)
Year 7 | (1.40%)
Year 8 | (1.50%)
Year 9 | 0.00%
Casualty |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 19.20%
Year 2 | 24.20%
Year 3 | 11.80%
Year 4 | 7.80%
Year 5 | 4.90%
Year 6 | 2.10%
Year 7 | 1.90%
Year 8 | 1.10%
Year 9 | 2.00%
Other Specialty |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 25.30%
Year 2 | 34.80%
Year 3 | 22.90%
Year 4 | 0.30%
Year 5 | 3.00%
Year 6 | 0.70%
Year 7 | 0.10%
Year 8 | 0.00%
Year 9 | 0.00%
Property Catastrophe Excess Reinsurance |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 6.80%
Year 2 | 37.80%
Year 3 | 0.00%
Year 4 | 0.00%
Year 5 | 0.00%
Year 6 | 0.00%
Year 7 | 0.00%
Year 8 | 0.00%
Year 9 | 0.00%
Property Risk and Pro Rata |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 47.60%
Year 2 | 29.50%
Year 3 | 10.20%
Year 4 | 5.30%
Year 5 | 3.10%
Year 6 | 1.40%
Year 7 | 1.00%
Year 8 | 0.30%
Year 9 | 0.00%
Agriculture |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 2.70%
Year 2 | 93.80%
Year 3 | 3.50%
Year 4 | 0.00%
Year 5 | 0.00%
Year 6 | 0.00%
Year 7 | 0.00%
Year 8 | 0.00%
Year 9 | 0.00%
Other |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 0.00%
Year 2 | 0.00%
Year 3 | 0.00%
Year 4 | 0.00%
Year 5 | 0.00%
Year 6 | 0.00%
Year 7 | 0.00%
Year 8 | 0.00%
Year 9 | 0.00%
Contracts incepting in 2013 | Retroactive reinsurance contracts |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 4.40%
Year 2 | 23.70%
Year 3 | 31.40%
Year 4 | 4.60%
Year 5 | 3.40%
Year 6 | 2.60%
Year 7 | 3.30%
Year 8 | 0.00%
Contracts incepting in 2014 | Retroactive reinsurance contracts |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 0.00%
Year 2 | 0.00%
Year 3 | 0.00%
Year 4 | 0.00%
Year 5 | 0.00%
Year 6 | 0.00%
Year 7 | 0.00%
Contracts incepting in 2015 | Retroactive reinsurance contracts |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 0.00%
Year 2 | 0.00%
Year 3 | 0.00%
Year 4 | 0.00%
Year 5 | 0.00%
Year 6 | 0.00%
Contracts incepting in 2017 | Retroactive reinsurance contracts |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 0.00%
Year 2 | 0.00%
Year 3 | 0.00%
Year 4 | 0.00%
Contracts incepting in 2018 | Retroactive reinsurance contracts |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 0.00%
Year 2 | 97.10%
Year 3 | 0.00%
Contracts incepting in 2019 | Retroactive reinsurance contracts |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 0.00%
Year 2 | 0.00%
Contracts incepting in 2020 | Retroactive reinsurance contracts |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year 1 | 0.00%

X
- 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
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of average annual payout, after reinsurance, in the eighth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671329-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearEight
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the fifth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671329-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearFive
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the fourth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671329-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearFour
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the ninth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671329-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearNine
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the first year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671329-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the seventh year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671329-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearSeven
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the sixth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671329-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearSix
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the third year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671329-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearThree
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of average annual payout, after reinsurance, in the second year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4G -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671329-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsHistoricalClaimsDurationYearTwo
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_AccidentAndHealthInsuranceExcludingWorkersCompensationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spnt_MarineAndEnergyProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spnt_CreditProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spnt_CasualtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spnt_OtherSpecialtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spnt_PropertyCatastropheProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spnt_PropertyRiskAndProRataProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spnt_AgricultureProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_OtherInsuranceProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | spnt_ContractAxis=spnt_Contractsinceptingin2013Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=spnt_RetroactiveReinsuranceContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | spnt_ContractAxis=spnt_Contractsinceptingin2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | spnt_ContractAxis=spnt_Contractsinceptingin2015Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | spnt_ContractAxis=spnt_Contractsinceptingin2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | spnt_ContractAxis=spnt_Contractsinceptingin2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | spnt_ContractAxis=spnt_Contractsinceptingin2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | spnt_ContractAxis=spnt_ContractsInceptingIn2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |