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v3.6.0.2

Subsequent Events (Details) - USD ($) $ / shares in Units, shares in Thousands |  |  | 1 Months Ended | 2 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Feb. 01, 2017 | Jan. 01, 2017 | Feb. 22, 2017 | Jan. 31, 2017 | Feb. 17, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Aug. 02, 2016
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Investment in variable interest entity |  |  |  |  |  | $ 0 | $ 0 | $ 0 |
Common shares |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Repurchase of shares (in shares) |  |  |  |  |  | 2,700 |  |  |
Common shares repurchased during period, Aggregate value |  |  |  |  |  | $ 309,400,000 |  |  |
Common shares repurchased during period, Average cost per share (in dollars per share) |  |  |  |  |  | $ 112.87 |  |  |
Share repurchase program, Authorized aggregate amount |  |  |  |  |  |  |  |  | $ 500,000,000
Subsequent Event | Common shares |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Repurchase of shares (in shares) |  |  |  |  | 281 |  |  |  |
Common shares repurchased during period, Aggregate value |  |  |  |  | $ 40,000,000 |  |  |  |
Common shares repurchased during period, Average cost per share (in dollars per share) |  |  |  |  | $ 142.40 |  |  |  |
Share repurchase program, Authorized aggregate amount |  |  | $ 500,000,000 |  |  |  |  |  |
DaVinciRe Holdings Ltd. |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Redeemable noncontrolling interest, ownership percentage |  |  |  |  |  | 24.00% | 26.30% |  |
Noncontrolling interest, value subscribed |  |  |  |  |  | $ 43,040,000 | $ 0 |  |
Redemption of shares from redeemable noncontrolling interests |  |  |  |  |  | 98,285,000 | 212,750,000 |  |
DaVinciRe Holdings Ltd. | Subsequent Event |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Redeemable noncontrolling interest, redemptions |  |  |  | $ 75,000,000 |  |  |  |  |
Redeemable noncontrolling interest, reserve holdback |  |  |  | 15,000,000 |  |  |  |  |
Redeemable noncontrolling interest, sale of interest |  |  |  | 24,000,000 |  |  |  |  |
Redeemable noncontrolling interest, ownership percentage |  | 22.60% |  |  |  |  |  |  |
Upsilon RFO Re Ltd. | Primary Beneficiary | Non-voting preference shares |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Non-voting preference shares issued to third parties |  |  |  |  |  | 166,600,000 | 153,700,000 |  |
Investment in variable interest entity |  |  |  |  |  | $ 55,200,000 | $ 42,500,000 |  |
Upsilon RFO Re Ltd. | Subsequent Event | Primary Beneficiary |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Capital distribution payable |  |  |  | 41,800,000 |  |  |  |  |
Variable interest entity, ownership percentage | 16.60% |  |  |  |  |  |  |  |
Upsilon RFO Re Ltd. | Subsequent Event | Primary Beneficiary | Non-voting preference shares |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Non-voting preference shares issued to third parties |  |  | $ 7,500,000 | 134,100,000 |  |  |  |  |
Fibonacci Reinsurance Ltd. | Subsequent Event | Primary Beneficiary |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Non-voting preference shares issued to third parties |  | $ 140,000,000 |  |  |  |  |  |  |
Variable interest entity, ownership percentage | 7.20% |  |  |  |  |  |  |  |
RenaissanceRe Medici Fund Ltd. |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Redeemable noncontrolling interest, ownership percentage |  |  |  |  |  | 36.50% | 46.10% |  |
Noncontrolling interest, value subscribed |  |  |  |  |  | $ 79,518,000 | $ 36,073,000 |  |
Redemption of shares from redeemable noncontrolling interests |  |  |  |  |  | $ 21,729,000 | $ 20,117,000 |  |
RenaissanceRe Medici Fund Ltd. | Subsequent Event |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Redeemable noncontrolling interest, ownership percentage | 33.70% |  |  |  |  |  |  |  |
RenaissanceRe Holdings Ltd. | Upsilon RFO Re Ltd. | Primary Beneficiary |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  |  |  | 28.80% | 21.70% |  |
RenaissanceRe Holdings Ltd. | Upsilon RFO Re Ltd. | Subsequent Event | Primary Beneficiary |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Capital distribution payable |  |  |  | 9,500,000 |  |  |  |  |
RenaissanceRe Holdings Ltd. | Upsilon RFO Re Ltd. | Subsequent Event | Primary Beneficiary | Non-voting preference shares |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Investment in variable interest entity |  |  |  | $ 9,500,000 |  |  |  |  |
RenaissanceRe Holdings Ltd. | RenaissanceRe Medici Fund Ltd. | Subsequent Event |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Noncontrolling interest, value subscribed |  |  |  |  | $ 10,200,000 |  |  |  |
Redemption of shares from redeemable noncontrolling interests |  |  |  |  | 10,000,000 |  |  |  |
Third-Party Investor [Member] | RenaissanceRe Medici Fund Ltd. | Subsequent Event |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Noncontrolling interest, value subscribed |  |  |  |  | 25,900,000 |  |  |  |
Redemption of shares from redeemable noncontrolling interests |  |  |  |  | $ 1,500,000 |  |  |  |

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