Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016		Mar. 31, 2015
Net income	$ 124,033	[1]	$ 121,648	[2]
Unrealized gains (losses) on securities:
Less applicable (taxes) benefits	(162,589)		(92,131)
Unrealized investment gains (losses), net of tax	302,004		171,245
Unrealized gains (losses) attributable to deferred acquisition costs	(2,769)		652
Less applicable (taxes) benefits	969		(228)
Unrealized gains (losses) attributable to deferred acquisition costs, net of tax	(1,800)		424
Foreign exchange translation adjustments, other than securities	1,760		(8,691)
Less applicable (taxes) benefits	(540)		2,729
Foreign exchange translation adjustments, other than securities, net of tax	1,220		(5,962)
Pension adjustments	3,238		3,820
Less applicable (taxes) benefits	(1,134)		(1,338)
Pension adjustments, net of tax	2,104		2,482
Other comprehensive income (loss)	303,528		168,189
Comprehensive income (loss)	427,561		289,837
Securities [Member]
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during period	465,157		266,582
Reclassification adjustment for (gains) losses on securities included in net income	(313)		(119)
Reclassification adjustment for amortization of (discount) and premium	(1,364)		(1,672)
Foreign exchange adjustment on securities recorded at fair value	455		(2,558)
Unrealized gains (losses) on securities	463,935		262,233
Other Investments [Member]
Unrealized gains (losses) on securities:
Unrealized gains (losses) on other investments	658		1,143
Total unrealized investment gains (losses)	$ 464,593		$ 263,376

[1] Due to the adoption of ASU 2016-09, certain balances related to excess tax benefits from stock compensation were adjusted prospectively as described in Note 2—New Accounting Standards.

[2] Certain prior year balances were adjusted to give effect to discontinued operations as described in Note 5—Discontinued Operations.