Computation of Earnings Per Ordinary Share and Ordinary Share Equivalent (Tables)

6 Months Ended

Jun. 30, 2011

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

(U.S. dollars and shares in thousands, except per share amounts) (Unaudited)	Three Months Ended June 30,					Six Months Ended June 30,
	2011		2010			2011			2010
Basic earnings per ordinary share:
Net income (loss) attributable to XL Group plc	$	225,663	$	194,005		$	(1,621	)	$	337,885
Less: preference share dividends		—		(2,194	)		—			(34,694	)
Add: gain on redemption of Redeemable Series C preference ordinary shares		—		—			—			16,616
Net income available to ordinary shareholders	$	225,663	$	191,811		$	(1,621	)	$	319,807
Weighted average ordinary shares outstanding – basic		309,184		342,056			310,325			342,049
Basic earnings per ordinary share	$	0.73	$	0.56		$	(0.01	)	$	0.93
Diluted earnings per ordinary share:
Net income available to ordinary shareholders	$	225,663	$	191,811		$	(1,621	)	$	319,807
Impact of assumed conversion of 10.75% Units		11,977		—			—			—
Net income available to ordinary shareholders including impact of assumed conversion of 10.75% Units	$	237,640	$	191,811		$	(1,621	)	$	319,807
Weighted average ordinary shares outstanding – basic		309,184		342,056			310,325			342,049
Impact of share based compensation and certain conversion features		32,805		822			—			732
Weighted average ordinary shares outstanding – diluted		341,989		342,878			310,325			342,781
Diluted earnings per ordinary share	$	0.69	$	0.56		$	(0.01	)	$	0.93
Dividends per ordinary share	$	0.11	$	0.10		$	0.22		$	0.20