CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Comprehensive income (loss)
Net income (loss)	$ 198,296	$ (49,612)	$ 334,960	$ 135,923
Other comprehensive income (loss), net of tax:
Change in foreign currency translation adjustments	42,643	(88,832)	(40)	(102,937)
Change in net unrealized gains and losses on investments	304,997	(706,848)	620,381	(826,181)
Change in other-than-temporary impairment losses on fixed maturity securities	1,248	199	1,698	650
Changes in pension and other postretirement plan adjustments	273	875	1,014	1,700
Total other comprehensive income (loss), net of tax	349,161	(794,606)	623,053	(926,768)
Total comprehensive income (loss)	$ 547,457	$ (844,218)	$ 958,013	$ (790,845)