FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Assets:
Available-for-sale securities	$ 35,628,773,000
Trading securities	2,800,000,000
Total fixed maturity securities	37,619,537,000
Equity securities	701,283,000
Other long-term investments	353,441,000
Short-term investments	246,622,000
Assets related to separate accounts
Variable annuity	13,339,653,000
Variable universal life	857,167,000
Liabilities:
Other liabilities	595,997,000
Fixed maturities:
Assets:
Available-for-sale securities	34,756,450,000
Trading securities	2,900,000,000
Residential mortgage-backed securities
Assets:
Available-for-sale securities	1,561,267,000
Commercial mortgage-backed securities
Assets:
Available-for-sale securities	1,194,840,000
Other asset-backed securities
Assets:
Available-for-sale securities	816,164,000
U.S. government-related securities
Assets:
Available-for-sale securities	1,637,036,000
States, municipals, and political subdivisions
Assets:
Available-for-sale securities	1,678,089,000
Preferred stocks
Assets:
Available-for-sale securities	63,744,000
Other government-related securities
Assets:
Available-for-sale securities	19,204,000
Corporate securities
Assets:
Available-for-sale securities	27,786,106,000
Level 3 | Other asset-backed securities
Assets related to separate accounts
Total assets measured at fair value on a recurring basis	600,073,000
Measured at fair value on a recurring basis | Level 1
Assets:
Total fixed maturity securities	1,442,821,000
Equity securities	622,813,000
Other long-term investments	119,861,000
Short-term investments	231,166,000
Total investments	2,416,661,000
Cash	348,625,000
Assets related to separate accounts
Variable annuity	13,339,653,000
Variable universal life	857,167,000
Total assets measured at fair value on a recurring basis	16,962,106,000
Liabilities:
Other liabilities	40,030,000
Total liabilities measured at fair value on a recurring basis	40,030,000
Measured at fair value on a recurring basis | Level 1 | Fixed maturities:
Assets:
Available-for-sale securities	1,181,144,000
Trading securities	261,677,000
Measured at fair value on a recurring basis | Level 1 | U.S. government-related securities
Assets:
Available-for-sale securities	1,117,268,000
Trading securities	253,335,000
Measured at fair value on a recurring basis | Level 1 | Preferred stocks
Assets:
Available-for-sale securities	63,744,000
Trading securities	8,342,000
Measured at fair value on a recurring basis | Level 1 | Corporate securities
Assets:
Available-for-sale securities	132,000
Measured at fair value on a recurring basis | Level 2
Assets:
Total fixed maturity securities	34,103,325,000
Equity securities	11,779,000
Other long-term investments	154,358,000
Short-term investments	15,456,000
Total investments	34,284,918,000
Assets related to separate accounts
Total assets measured at fair value on a recurring basis	34,284,918,000
Liabilities:
Other liabilities	78,238,000
Total liabilities measured at fair value on a recurring basis	78,238,000
Measured at fair value on a recurring basis | Level 2 | Fixed maturities:
Assets:
Available-for-sale securities	31,692,029,000
Trading securities	2,411,296,000
Measured at fair value on a recurring basis | Level 2 | Residential mortgage-backed securities
Assets:
Available-for-sale securities	1,561,264,000
Trading securities	302,108,000
Measured at fair value on a recurring basis | Level 2 | Commercial mortgage-backed securities
Assets:
Available-for-sale securities	1,194,840,000
Trading securities	157,632,000
Measured at fair value on a recurring basis | Level 2 | Other asset-backed securities
Assets:
Available-for-sale securities	216,032,000
Trading securities	109,199,000
Measured at fair value on a recurring basis | Level 2 | U.S. government-related securities
Assets:
Available-for-sale securities	519,768,000
Trading securities	4,906,000
Measured at fair value on a recurring basis | Level 2 | States, municipals, and political subdivisions
Assets:
Available-for-sale securities	1,678,089,000
Trading securities	325,692,000
Measured at fair value on a recurring basis | Level 2 | Other government-related securities
Assets:
Available-for-sale securities	19,204,000
Trading securities	58,299,000
Measured at fair value on a recurring basis | Level 2 | Corporate securities
Assets:
Available-for-sale securities	26,502,832,000
Trading securities	1,453,460,000
Measured at fair value on a recurring basis | Level 3
Assets:
Total fixed maturity securities	2,073,391,000
Equity securities	66,691,000
Other long-term investments	79,222,000
Total investments	2,219,304,000
Assets related to separate accounts
Total assets measured at fair value on a recurring basis	2,219,304,000
Liabilities:
Annuity account balances	97,108,000
Other liabilities	477,729,000
Total liabilities measured at fair value on a recurring basis	574,837,000
Measured at fair value on a recurring basis | Level 3 | Fixed maturities:
Assets:
Available-for-sale securities	1,883,277,000
Trading securities	190,114,000
Measured at fair value on a recurring basis | Level 3 | Residential mortgage-backed securities
Assets:
Available-for-sale securities	3,000
Measured at fair value on a recurring basis | Level 3 | Other asset-backed securities
Assets:
Available-for-sale securities	600,132,000
Trading securities	170,500,000
Measured at fair value on a recurring basis | Level 3 | Corporate securities
Assets:
Available-for-sale securities	1,283,142,000
Trading securities	19,614,000
Measured at fair value on a recurring basis | Fair Values
Assets:
Total fixed maturity securities	37,619,537,000
Equity securities	701,283,000
Other long-term investments	353,441,000
Short-term investments	246,622,000
Total investments	38,920,883,000
Cash	348,625,000
Assets related to separate accounts
Variable annuity	13,339,653,000
Variable universal life	857,167,000
Total assets measured at fair value on a recurring basis	53,466,328,000
Liabilities:
Annuity account balances	97,108,000
Other liabilities	595,997,000
Total liabilities measured at fair value on a recurring basis	693,105,000
Measured at fair value on a recurring basis | Fair Values | Fixed maturities:
Assets:
Available-for-sale securities	34,756,450,000
Trading securities	2,863,087,000
Measured at fair value on a recurring basis | Fair Values | Residential mortgage-backed securities
Assets:
Available-for-sale securities	1,561,267,000
Trading securities	302,108,000
Measured at fair value on a recurring basis | Fair Values | Commercial mortgage-backed securities
Assets:
Available-for-sale securities	1,194,840,000
Trading securities	157,632,000
Measured at fair value on a recurring basis | Fair Values | Other asset-backed securities
Assets:
Available-for-sale securities	816,164,000
Trading securities	279,699,000
Measured at fair value on a recurring basis | Fair Values | U.S. government-related securities
Assets:
Available-for-sale securities	1,637,036,000
Trading securities	258,241,000
Measured at fair value on a recurring basis | Fair Values | States, municipals, and political subdivisions
Assets:
Available-for-sale securities	1,678,089,000
Trading securities	325,692,000
Measured at fair value on a recurring basis | Fair Values | Preferred stocks
Assets:
Available-for-sale securities	63,744,000
Trading securities	8,342,000
Measured at fair value on a recurring basis | Fair Values | Other government-related securities
Assets:
Available-for-sale securities	19,204,000
Trading securities	58,299,000
Measured at fair value on a recurring basis | Fair Values | Corporate securities
Assets:
Available-for-sale securities	27,786,106,000
Trading securities	1,473,074,000
Predecessor
Assets:
Available-for-sale securities		34,824,298,000
Total fixed maturity securities		36,756,240,000
Equity securities		756,790,000
Other long-term investments		270,701,000
Short-term investments		246,717,000
Assets related to separate accounts
Variable annuity		13,157,429,000
Variable universal life		834,940,000
Liabilities:
Other liabilities		629,535,000
Predecessor | Fixed maturities:
Assets:
Available-for-sale securities		33,937,420,000
Trading securities		2,800,000,000
Predecessor | Residential mortgage-backed securities
Assets:
Available-for-sale securities		1,418,258,000
Predecessor | Commercial mortgage-backed securities
Assets:
Available-for-sale securities		1,177,252,000
Predecessor | Other asset-backed securities
Assets:
Available-for-sale securities		839,376,000
Predecessor | U.S. government-related securities
Assets:
Available-for-sale securities		1,428,895,000
Predecessor | States, municipals, and political subdivisions
Assets:
Available-for-sale securities		1,687,689,000
Predecessor | Other government-related securities
Assets:
Available-for-sale securities		20,172,000
Predecessor | Corporate securities
Assets:
Available-for-sale securities		27,365,778,000
Predecessor | Level 3 | Other asset-backed securities
Assets related to separate accounts
Total assets measured at fair value on a recurring basis		563,752,000
Predecessor | Measured at fair value on a recurring basis | Level 1
Assets:
Total fixed maturity securities		1,410,883,000
Equity securities		590,832,000
Other long-term investments		119,997,000
Short-term investments		243,436,000
Total investments		2,365,148,000
Cash		268,286,000
Assets related to separate accounts
Variable annuity		13,157,429,000
Variable universal life		834,940,000
Total assets measured at fair value on a recurring basis		16,625,803,000
Liabilities:
Other liabilities		62,146,000
Total liabilities measured at fair value on a recurring basis		62,146,000
Predecessor | Measured at fair value on a recurring basis | Level 1 | Fixed maturities:
Assets:
Available-for-sale securities		1,165,320,000
Trading securities		245,563,000
Predecessor | Measured at fair value on a recurring basis | Level 1 | U.S. government-related securities
Assets:
Available-for-sale securities		1,165,188,000
Trading securities		245,563,000
Predecessor | Measured at fair value on a recurring basis | Level 1 | Corporate securities
Assets:
Available-for-sale securities		132,000
Predecessor | Measured at fair value on a recurring basis | Level 2
Assets:
Total fixed maturity securities		33,257,830,000
Equity securities		99,267,000
Other long-term investments		106,079,000
Short-term investments		3,281,000
Total investments		33,466,457,000
Assets related to separate accounts
Total assets measured at fair value on a recurring basis		33,466,457,000
Liabilities:
Other liabilities		61,046,000
Total liabilities measured at fair value on a recurring basis		61,046,000
Predecessor | Measured at fair value on a recurring basis | Level 2 | Fixed maturities:
Assets:
Available-for-sale securities		30,878,778,000
Trading securities		2,379,052,000
Predecessor | Measured at fair value on a recurring basis | Level 2 | Residential mortgage-backed securities
Assets:
Available-for-sale securities		1,418,255,000
Trading securities		288,114,000
Predecessor | Measured at fair value on a recurring basis | Level 2 | Commercial mortgage-backed securities
Assets:
Available-for-sale securities		1,177,252,000
Trading securities		151,111,000
Predecessor | Measured at fair value on a recurring basis | Level 2 | Other asset-backed securities
Assets:
Available-for-sale securities		275,415,000
Trading securities		105,118,000
Predecessor | Measured at fair value on a recurring basis | Level 2 | U.S. government-related securities
Assets:
Available-for-sale securities		263,707,000
Trading securities		4,898,000
Predecessor | Measured at fair value on a recurring basis | Level 2 | States, municipals, and political subdivisions
Assets:
Available-for-sale securities		1,684,014,000
Trading securities		325,446,000
Predecessor | Measured at fair value on a recurring basis | Level 2 | Other government-related securities
Assets:
Available-for-sale securities		20,172,000
Trading securities		57,032,000
Predecessor | Measured at fair value on a recurring basis | Level 2 | Corporate securities
Assets:
Available-for-sale securities		26,039,963,000
Trading securities		1,447,333,000
Predecessor | Measured at fair value on a recurring basis | Level 3
Assets:
Total fixed maturity securities		2,087,527,000
Equity securities		66,691,000
Other long-term investments		44,625,000
Total investments		2,198,843,000
Assets related to separate accounts
Total assets measured at fair value on a recurring basis		2,198,843,000
Liabilities:
Annuity account balances		97,825,000
Other liabilities		506,343,000
Total liabilities measured at fair value on a recurring basis		604,168,000
Predecessor | Measured at fair value on a recurring basis | Level 3 | Fixed maturities:
Assets:
Available-for-sale securities		1,893,322,000
Trading securities		194,205,000
Predecessor | Measured at fair value on a recurring basis | Level 3 | Residential mortgage-backed securities
Assets:
Available-for-sale securities		3,000
Predecessor | Measured at fair value on a recurring basis | Level 3 | Other asset-backed securities
Assets:
Available-for-sale securities		563,961,000
Trading securities		169,461,000
Predecessor | Measured at fair value on a recurring basis | Level 3 | States, municipals, and political subdivisions
Assets:
Available-for-sale securities		3,675,000
Predecessor | Measured at fair value on a recurring basis | Level 3 | Corporate securities
Assets:
Available-for-sale securities		1,325,683,000
Trading securities		24,744,000
Predecessor | Measured at fair value on a recurring basis | Fair Values
Assets:
Total fixed maturity securities		36,756,240,000
Equity securities		756,790,000
Other long-term investments		270,701,000
Short-term investments		246,717,000
Total investments		38,030,448,000
Cash		268,286,000
Assets related to separate accounts
Variable annuity		13,157,429,000
Variable universal life		834,940,000
Total assets measured at fair value on a recurring basis		52,291,103,000
Liabilities:
Annuity account balances		97,825,000
Other liabilities		629,535,000
Total liabilities measured at fair value on a recurring basis		727,360,000
Predecessor | Measured at fair value on a recurring basis | Fair Values | Fixed maturities:
Assets:
Available-for-sale securities		33,937,420,000
Trading securities		2,818,820,000
Predecessor | Measured at fair value on a recurring basis | Fair Values | Residential mortgage-backed securities
Assets:
Available-for-sale securities		1,418,258,000
Trading securities		288,114,000
Predecessor | Measured at fair value on a recurring basis | Fair Values | Commercial mortgage-backed securities
Assets:
Available-for-sale securities		1,177,252,000
Trading securities		151,111,000
Predecessor | Measured at fair value on a recurring basis | Fair Values | Other asset-backed securities
Assets:
Available-for-sale securities		839,376,000
Trading securities		274,579,000
Predecessor | Measured at fair value on a recurring basis | Fair Values | U.S. government-related securities
Assets:
Available-for-sale securities		1,428,895,000
Trading securities		250,461,000
Predecessor | Measured at fair value on a recurring basis | Fair Values | States, municipals, and political subdivisions
Assets:
Available-for-sale securities		1,687,689,000
Trading securities		325,446,000
Predecessor | Measured at fair value on a recurring basis | Fair Values | Other government-related securities
Assets:
Available-for-sale securities		20,172,000
Trading securities		57,032,000
Predecessor | Measured at fair value on a recurring basis | Fair Values | Corporate securities
Assets:
Available-for-sale securities		27,365,778,000
Trading securities		$ 1,472,077,000