This item represents the total realized gain (loss) included in earnings for the period as a result of selling marketable securities categorized as trading, available-for-sale, or held-to-maturity. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities categorized as trading held at each balance sheet date, that was included in earnings for the period, which may have arisen from (a) securities classified as trading, (b) the unrealized holding gain (loss) on held-to-maturity securities transferred to the trading security category, and (c) the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) on available-for-sale securities transferred to trading securities during the period.

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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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Investments (Summary Of Components Of Net Realized Capital Gains (Losses)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Other-than-temporary impairments									$ (39,502)	$ (1,052)	$ (10,022)
Total net realized capital gains (losses)	13,352us-gaap_RealizedInvestmentGainsLosses	(9,448)us-gaap_RealizedInvestmentGainsLosses	59,016us-gaap_RealizedInvestmentGainsLosses	21,126us-gaap_RealizedInvestmentGainsLosses	94,629us-gaap_RealizedInvestmentGainsLosses	44,958us-gaap_RealizedInvestmentGainsLosses	33,905us-gaap_RealizedInvestmentGainsLosses	126,735us-gaap_RealizedInvestmentGainsLosses	84,046us-gaap_RealizedInvestmentGainsLosses	300,227us-gaap_RealizedInvestmentGainsLosses	164,400us-gaap_RealizedInvestmentGainsLosses
Fixed Maturity Securities [Member] \| Market Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Other-than-temporary impairments									(39,502)	(1,052)	(10,022)
Gains (losses) from sales									4,408	6,792	14,708
Fixed Maturity Securities [Member] \| Fair Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from sales									(3,137)	201	5,675
Gains (losses) from fair value adjustments									(1,498)	307	1,941
Equity Securities [Member] \| Market Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from sales									426	2,648	14,920
Equity Securities [Member] \| Fair Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from sales									156	32,747	21,031
Gains (losses) from fair value adjustments									123,196	258,569	116,163
Short-Term Investments And Cash [Member] \| Fair Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from sales									$ (3)	$ 15	$ (16)