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Noncontrolling Interests (Schedule Of Redeemable Noncontrolling Interest) (Details) (USD $)
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0 Months Ended | 3 Months Ended | 0 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Mar. 31, 2012
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Dec. 31, 2011
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Jun. 01, 2011
DaVinciRe [Member]
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Mar. 31, 2012
DaVinciRe [Member]
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Mar. 31, 2011
DaVinciRe [Member]
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Jan. 02, 2012
DaVinciRe [Member]
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Dec. 31, 2011
DaVinciRe [Member]
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Jan. 02, 2012
DaVinciRe [Member]
Redeemable Noncontrolling Interest Member
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Mar. 31, 2012
DaVinciRe [Member]
Redeemable Noncontrolling Interest Member
Notice Submitted in Advance of Deadline [Member]
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Jan. 02, 2012
DaVinciRe [Member]
Redeemable Noncontrolling Interest Member
Notice Submitted in Advance of Deadline [Member]
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Dec. 31, 2011
DaVinciRe [Member]
Redeemable Noncontrolling Interest Member
Notice Submitted in Advance of Deadline [Member]
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Mar. 31, 2012
DaVinciRe [Member]
Redeemable Noncontrolling Interest Member
Maximum [Member]
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| Redeemable Noncontrolling Interest [Line Items] | ||||||||||||
| Parent company ownership in redeemable noncontrolling interest | 42.80% | 34.70% | 34.70% | 42.80% | ||||||||
| Share repurchase requests, limit | 25.00% | |||||||||||
| Redeemable Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests, Reserve Holdback | $ 10,000,000 | $ 4,900,000 | $ 1,800,000 | |||||||||
| Equity raised from new and existing shareholders | 100,000,000 | |||||||||||
| Equity raised from parent | 30,000,000 | |||||||||||
| Proceeds from Sale of Partial Interest in Consolidated Subsidiaries | 98,900,000 | |||||||||||
| Activity in redeemable noncontrolling interest | ||||||||||||
| Balance, Beginning | 796,743,000 | 657,727,000 | 657,727,000 | 757,655,000 | 48,200,000 | 9,200,000 | ||||||
| Net purchase of shares from redeemable noncontrolling interests | 0 | (135,172,000) | ||||||||||
| Net sale of shares to redeemable noncontrolling interests | 85,668,000 | 0 | ||||||||||
| Comprehensive income: | ||||||||||||
| Net income (loss) attributable to redeemable noncontrolling interest | 53,348,000 | (85,763,000) | ||||||||||
| Other comprehensive loss attributable to redeemable noncontrolling interest | 0 | (3,000) | ||||||||||
| Balance, Ending | $ 796,743,000 | $ 657,727,000 | $ 796,743,000 | $ 536,717,000 | $ 48,200,000 | $ 9,200,000 | ||||||