Consolidated Statements of Comprehensive Income Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income before noncontrolling interests	$ 180,177	$ 115,127	$ 349,861	$ 231,725
Other comprehensive income (loss):
Change in unrealized currency translation adjustments	24,815	(23,156)	20,790	(69,779)
Change in unrealized investment gains, net of taxes	48,200	(197,060)	121,144	(189,250)
Change in net pension asset, net of taxes	2,020	1,814	2,611	3,628
Other comprehensive income (loss)	75,035	(218,402)	144,545	(255,401)
Comprehensive income (loss)	255,212	(103,275)	494,406	(23,676)
Comprehensive (income) loss to the noncontrolling interest	(235)	865	(264)	842
Comprehensive income (loss) to common stockholders	$ 254,977	$ (102,410)	$ 494,142	$ (22,834)