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Cover
Jun. 17, 2021
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jun. 17, 2021
Entity Registrant Name SIRIUSPOINT LTD.
Entity Incorporation, State or Country Code D0
Entity File Number 001-36052
Entity Tax Identification Number 98-1599372
Entity Address, Address Point House
Entity Address, Address 2 3 Waterloo Lane
Entity Address, City Pembroke
Entity Address, Postal Zip Code HM 08
Entity Address, Country BM
City Area Code 441
Local Phone Number 542-3300
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of each class Common Shares, $0.10 par value
Trading Symbol SPNT
Name of each exchange on which registered NYSE
Entity Emerging Growth Company false
Entity Central Index Key 0001576018
Amendment Flag false
Document Fiscal Year Focus 2020
Document Fiscal Period Focus FY