Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net income	$ 121,648	$ 132,856	[1]
Unrealized gains on securities:
Less applicable taxes	(92,131)	(213,667)
Unrealized investment gains, net of tax	171,245	396,890
Unrealized gains (losses) attributable to deferred acquisition costs	652	(4,228)
Less applicable taxes	(228)	1,480
Unrealized gains (losses) attributable to deferred acquisition costs, net of tax	424	(2,748)
Foreign exchange translation adjustments, other than securities	(8,691)	(1,177)
Less applicable taxes	2,729	439
Foreign exchange translation adjustments, other than securities, net of tax	(5,962)	(738)
Pension adjustments	3,820	2,574
Less applicable taxes	(1,338)	(901)
Pension adjustments, net of tax	2,482	1,673
Other comprehensive income (loss)	168,189	395,077
Comprehensive income	289,837	527,933
Securities [Member]
Unrealized gains on securities:
Unrealized holding gains arising during period	266,582	629,066
Reclassification adjustment for (gains) on securities included in net income	(119)	(16,619)
Reclassification adjustment for amortization of (discount) and premium	(1,672)	(2,227)
Foreign exchange adjustment on securities recorded at fair value	(2,558)	(871)
Unrealized gains on securities	262,233	609,349
Other Investments [Member]
Unrealized gains on securities:
Unrealized gains on other investments	1,143	1,208
Total unrealized investment gains	$ 263,376	$ 610,557

[1] Certain balances were retrospectively adjusted to give effect to the adoption of new accounting guidance as described in Note G- Adoption of New Accounting Standards