UNAUDITED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Investments:
Fixed maturities, at fair value (amortized cost: 2012, $25,442,779; 2011, $25,771,715)	$ 26,242,802	$ 26,190,025
Equity securities, at fair value (cost: 2012, $553,715; 2010, $480,685)	529,056	468,197
Short-term investments, at fair value (amortized cost: 2012, $227,321; 2011, $359,378)	227,380	359,063
Total investments available for sale	26,999,238	27,017,285
Fixed maturities, held to maturity at amortized cost (fair value: 2012, $3,006,292; 2011, $2,895,688)	2,716,357	2,668,978
Investments in affiliates	1,024,353	1,052,729
Other investments	1,208,220	985,262
Total investments	31,948,168	31,724,254
Cash and cash equivalents	3,311,146	3,825,125
Accrued investment income	323,898	331,758
Deferred acquisition costs	723,597	647,113
Ceded unearned premiums	744,548	596,895
Premiums receivable	3,107,931	2,411,611
Reinsurance balances receivable	223,187	220,017
Unpaid losses and loss expenses recoverable	3,342,628	3,654,948
Receivable from investments sold	57,549	59,727
Goodwill and other intangible assets	405,516	407,321
Deferred tax asset	132,508	115,601
Other assets	619,480	670,895
Total assets	44,940,156	44,665,265
Liabilities:
Unpaid losses and loss expenses	19,961,950	20,613,901
Deposit liabilities	1,600,595	1,608,108
Future policy benefit reserves	4,740,907	4,845,394
Unearned premiums	4,231,975	3,555,310
Notes payable and debt	1,673,921	2,275,327
Reinsurance balances payable	516,886	90,552
Payable for investments purchased	51,683	58,494
Deferred tax liability	154,497	91,104
Other liabilities	793,940	770,945
Total liabilities	33,726,354	33,909,135
Commitments and Contingencies	0	0
Shareholders' Equity:
Ordinary shares, 999,990,000 authorized, par value $0.01; issued and outstanding: (2012, 305,692,155; 2011, 315,645,796)	3,057	3,156
Additional paid in capital	8,738,204	8,938,679
Accumulated other comprehensive income	910,760	583,064
Retained earnings (deficit)	215,788	(113,241)
Shareholders' equity attributable to XL Group plc	9,867,809	9,411,658
Non-controlling interest in equity of consolidated subsidiaries	1,345,993	1,344,472
Total shareholders' equity	11,213,802	10,756,130
Total liabilities and shareholders' equity	$ 44,940,156	$ 44,665,265