Basis of Preparation and Consolidation (Tables)

9 Months Ended

Sep. 30, 2011

Schedule Of Reclassification Detail [Text Block]

Consolidated Balance Sheet at December 31, 2010 (U.S. dollars in thousands):	Previously Reported			Revised
Series E preference ordinary shares, 1,000,000 authorized, par value $0.01; Issued and outstanding: (2010, 1,000,000; 2009, 1,000,000)	$	10		$	—
Additional paid in capital		9,993,006			8,993,016
Shareholders’ equity attributable to XL Group plc		10,610,753			9,610,753
Non-controlling interest in equity of consolidated subsidiaries		2,296			1,002,296
Consolidated Statement of Income and Comprehensive Income for the year ended December 31, 2010 (U.S. dollars in thousands):
Non-controlling interests	$	(4	)	$	(39,831	)
Net income (loss) attributable to XL Group plc		643,377			603,550
Preference share dividends		(74,521	)		(34,694	)
Comprehensive income (loss)		1,886,639			1,846,812