|
Investments In Fixed Maturity Securities Investments in Fixed Maturity Securities (Investments in fixed maturity securities) (Details) (USD $)
|
Sep. 30, 2014
|
Dec. 31, 2013
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total held to maturity, Amortized Cost |
$ 101,196,000 |
|
$ 101,320,000 |
|
| Held to Maturity Securities Accumulated Unrecognized Holding Gain |
20,260,000 |
|
14,900,000 |
|
| Held to Maturity Securities Accumulated Unrecognized Holding Loss |
0 |
|
0 |
|
| Total held to maturity, Fair Value |
121,456,000 |
|
116,220,000 |
|
| Total held to maturity, Carrying Value |
101,196,000 |
|
101,320,000 |
|
| Total available for sale, Amortized Cost |
11,780,111,000 |
|
11,190,311,000 |
|
| Total available for sale, Gross Unrealized Gains |
571,004,000 |
|
436,347,000 |
|
| Total available for sale, Gross Unrealized Losses |
(54,555,000) |
|
(111,134,000) |
|
| Total available for sale, Fair Value |
12,296,560,000 |
|
11,515,524,000 |
|
| Total available for sale, Carrying Value |
12,296,560,000 |
|
11,515,524,000 |
|
| Total investments in fixed maturity securities, Amortized Value |
11,881,307,000 |
|
11,291,631,000 |
|
| Total investments in fixed maturity securities, Gross Unrealized Gains |
591,264,000 |
|
451,247,000 |
|
| Total investments in fixed maturity securities, Gross Unrealized Losses |
(54,555,000) |
|
(111,134,000) |
|
| Total investments in fixed maturity securities, Fair Value |
12,418,016,000 |
|
11,631,744,000 |
|
| Total investments in fixed maturity securities, Carrying Value |
12,397,756,000 |
|
11,616,844,000 |
|
| Minimum ownership of Common stockholders equity |
10.00% |
|
|
|
|
Foreign government
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total available for sale, Amortized Cost |
880,959,000 |
|
844,469,000 |
|
| Total available for sale, Gross Unrealized Gains |
95,159,000 |
|
51,674,000 |
|
| Total available for sale, Gross Unrealized Losses |
(13,207,000) |
|
(16,286,000) |
|
| Total available for sale, Fair Value |
962,911,000 |
|
879,857,000 |
|
| Total available for sale, Carrying Value |
962,911,000 |
|
879,857,000 |
|
|
Commercial Mortgage Backed Securities [Member]
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total available for sale, Amortized Cost |
76,993,000 |
|
76,454,000 |
|
| Total available for sale, Gross Unrealized Gains |
976,000 |
|
5,670,000 |
|
| Total available for sale, Gross Unrealized Losses |
(83,000) |
|
(988,000) |
|
| Total available for sale, Fair Value |
77,886,000 |
|
81,136,000 |
|
| Total available for sale, Carrying Value |
77,886,000 |
|
81,136,000 |
|
|
U.S. government and government agency
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total available for sale, Amortized Cost |
787,967,000 |
|
858,319,000 |
|
| Total available for sale, Gross Unrealized Gains |
30,296,000 |
|
34,522,000 |
|
| Total available for sale, Gross Unrealized Losses |
(5,229,000) |
|
(7,982,000) |
|
| Total available for sale, Fair Value |
813,034,000 |
|
884,859,000 |
|
| Total available for sale, Carrying Value |
813,034,000 |
|
884,859,000 |
|
|
Residential Mortgage Backed Securities [Member]
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total available for sale, Amortized Cost |
1,209,068,000 |
[1] |
1,248,693,000 |
[1] |
| Total available for sale, Gross Unrealized Gains |
26,100,000 |
[1] |
25,895,000 |
[1] |
| Total available for sale, Gross Unrealized Losses |
(14,209,000) |
[1] |
(25,941,000) |
[1] |
| Total available for sale, Fair Value |
1,220,959,000 |
[1] |
1,248,647,000 |
[1] |
| Total available for sale, Carrying Value |
1,220,959,000 |
[1] |
1,248,647,000 |
[1] |
| Non-credit portion of other-than-temporary impairments (OTTI) |
1,020,000 |
|
1,961,000 |
|
|
Corporate Debt Securities [Member]
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total available for sale, Amortized Cost |
4,866,983,000 |
|
4,076,585,000 |
|
| Total available for sale, Gross Unrealized Gains |
191,727,000 |
|
156,256,000 |
|
| Total available for sale, Gross Unrealized Losses |
(17,008,000) |
|
(30,100,000) |
|
| Total available for sale, Fair Value |
5,041,702,000 |
|
4,202,741,000 |
|
| Total available for sale, Carrying Value |
5,041,702,000 |
|
4,202,741,000 |
|
|
State and municipal
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total available for sale, Amortized Cost |
3,958,141,000 |
|
4,085,791,000 |
|
| Total available for sale, Gross Unrealized Gains |
226,746,000 |
|
162,330,000 |
|
| Total available for sale, Gross Unrealized Losses |
(4,819,000) |
|
(29,837,000) |
|
| Total available for sale, Fair Value |
4,180,068,000 |
|
4,218,284,000 |
|
| Total available for sale, Carrying Value |
4,180,068,000 |
|
4,218,284,000 |
|
|
State and municipal
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total held to maturity, Amortized Cost |
71,897,000 |
|
68,929,000 |
|
| Held to Maturity Securities Accumulated Unrecognized Holding Gain |
16,991,000 |
|
11,172,000 |
|
| Held to Maturity Securities Accumulated Unrecognized Holding Loss |
0 |
|
0 |
|
| Total held to maturity, Fair Value |
88,888,000 |
|
80,101,000 |
|
| Total held to maturity, Carrying Value |
71,897,000 |
|
68,929,000 |
|
|
Residential Mortgage Backed Securities [Member]
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total held to maturity, Amortized Cost |
24,300,000 |
|
27,393,000 |
|
| Held to Maturity Securities Accumulated Unrecognized Holding Gain |
2,901,000 |
|
3,311,000 |
|
| Held to Maturity Securities Accumulated Unrecognized Holding Loss |
0 |
|
0 |
|
| Total held to maturity, Fair Value |
27,201,000 |
|
30,704,000 |
|
| Total held to maturity, Carrying Value |
24,300,000 |
|
27,393,000 |
|
|
Corporate Debt Securities [Member]
|
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Total held to maturity, Amortized Cost |
4,999,000 |
|
4,998,000 |
|
| Held to Maturity Securities Accumulated Unrecognized Holding Gain |
368,000 |
|
417,000 |
|
| Held to Maturity Securities Accumulated Unrecognized Holding Loss |
0 |
|
0 |
|
| Total held to maturity, Fair Value |
5,367,000 |
|
5,415,000 |
|
| Total held to maturity, Carrying Value |
$ 4,999,000 |
|
$ 4,998,000 |
|
|
|
|