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

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per share

The following table sets forth the computation of basic and diluted earnings per ordinary share for the years ended December 31, 2015, 2014 and 2013:

(U.S. dollars in thousands, except per share amounts)	2015		2014		2013
Basic earnings per ordinary share and ordinary share equivalents outstanding:
Net income (loss) attributable to ordinary shareholders	$	1,207,152	$	188,340	$	1,059,916
Weighted average ordinary shares outstanding	286,194		267,103		287,801
Basic earnings per ordinary share and ordinary share equivalents outstanding	$	4.22	$	0.71	$	3.68
Diluted earnings per ordinary share and ordinary share equivalents outstanding:
Weighted average ordinary shares outstanding – basic	286,194		267,103		287,801
Impact of share based compensation	4,805		4,424		4,268
Weighted average ordinary shares outstanding – diluted	290,999		271,527		292,069
Diluted earnings per ordinary share & ordinary share equivalents outstanding	$	4.15	$	0.69	$	3.63
Dividends per ordinary share	$	0.72	$	0.64	$	0.56