|
Noncontrolling Interests (Schedule Of Redeemable Noncontrolling Interest) (Details) (USD $)
|
3 Months Ended | 0 Months Ended | 1 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2013
|
Dec. 31, 2012
|
Mar. 31, 2013
DaVinciRe [Member]
|
Mar. 31, 2012
DaVinciRe [Member]
|
Jan. 02, 2013
DaVinciRe [Member]
|
Dec. 31, 2012
DaVinciRe [Member]
|
Oct. 02, 2012
DaVinciRe [Member]
|
Jun. 01, 2012
DaVinciRe [Member]
|
Jan. 02, 2012
DaVinciRe [Member]
|
Dec. 31, 2011
DaVinciRe [Member]
|
Jan. 02, 2012
DaVinciRe [Member]
Retroactive Adjustment [Member]
|
Oct. 02, 2012
DaVinciRe [Member]
Redeemable Noncontrolling Interest [Member]
|
Jun. 01, 2012
DaVinciRe [Member]
Redeemable Noncontrolling Interest [Member]
|
Jan. 02, 2012
DaVinciRe [Member]
Redeemable Noncontrolling Interest [Member]
|
Jan. 31, 2013
DaVinciRe [Member]
Redeemable Noncontrolling Interest [Member]
|
Dec. 31, 2012
DaVinciRe [Member]
Redeemable Noncontrolling Interest [Member]
Notice Submitted in Advance of Deadline [Member]
|
Mar. 31, 2013
DaVinciRe [Member]
Redeemable Noncontrolling Interest [Member]
Maximum [Member]
|
Jan. 02, 2012
Variable Interest Entity, Primary Beneficiary [Member]
Redeemable Noncontrolling Interest [Member]
|
|
| Redeemable Noncontrolling Interest [Line Items] | ||||||||||||||||||
| Parent company ownership in redeemable noncontrolling interest | 32.90% | 32.90% | 30.80% | 30.80% | 34.70% | 42.80% | 31.50% | |||||||||||
| Share repurchase requests, limit | 25.00% | |||||||||||||||||
| Redeemable noncontrolling interest, reserve holdback | $ 5,000,000 | $ 4,900,000 | $ 20,500,000 | $ 10,000,000 | ||||||||||||||
| Proceeds from sale of partial interest in consolidated subsidiary | 9,800,000 | 98,900,000 | ||||||||||||||||
| Redeemable noncontrolling interest, net redemptions | 150,000,000 | |||||||||||||||||
| Sale of parent equity to third party | 24,700,000 | |||||||||||||||||
| Proceeds from equity raised | 49,400,000 | |||||||||||||||||
| Activity in redeemable noncontrolling interest | ||||||||||||||||||
| Balance, Beginning | 875,770,000 | 968,259,000 | 968,259,000 | 657,727,000 | 53,200,000 | |||||||||||||
| Purchase of shares from redeemable noncontrolling interests | (186,231,000) | 0 | ||||||||||||||||
| Sale of shares to redeemable noncontrolling interest | 54,927,000 | 85,668,000 | 49,300,000 | |||||||||||||||
| Net income (loss) attributable to redeemable noncontrolling interest | 38,815,000 | 53,348,000 | ||||||||||||||||
| Balance, Ending | $ 875,770,000 | $ 968,259,000 | $ 875,770,000 | $ 796,743,000 | $ 53,200,000 | |||||||||||||