XML 42 R56.htm IDEA: XBRL DOCUMENT v3.3.0.814
Investments (Amortized Cost And Fair Value Of Available-For-Sale and Held-To-Maturity Investment Portfolios) (Detail) - USD ($)
$ in Millions
Sep. 30, 2015
Dec. 31, 2014
Available For Sale Securities [Abstract]    
Amortized cost $ 6,265 $ 6,509
Gross unrealized gains 176 209
Gross unrealized losses (158) (147)
Total available-for-sale, fair value 6,283 6,571
Other-than-temporary impairments [1] (92) (90)
Held To Maturity Securities [Abstract]    
Amortized cost 2,707 2,757
Gross unrealized gains 12 77
Gross unrealized losses (277) (202)
Total Held-To-Maturity, fair value 2,442 2,632
Other-Than-Temporary Impairments [1] 0 0
Corporate Obligations [Member] | Variable Interest Entity Primary Beneficiary [Member]    
Held To Maturity Securities [Abstract]    
Amortized cost 2,707 2,757
Gross unrealized gains 12 77
Gross unrealized losses (277) (202)
Total Held-To-Maturity, fair value 2,442 2,632
Other-Than-Temporary Impairments [1] 0 0
Money Market Securities [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 111 422
Gross unrealized gains 0 0
Gross unrealized losses 0 0
Total available-for-sale, fair value 111 422
Other-than-temporary impairments [1] 0 0
Perpetual Debt And Equity Securities [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 12 12
Gross unrealized gains 1 1
Gross unrealized losses 0 0
Total available-for-sale, fair value 13 13
Other-than-temporary impairments [1] 0 0
Fixed Maturities [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 6,142 6,075
Gross unrealized gains 175 208
Gross unrealized losses (158) (147)
Total available-for-sale, fair value 6,159 6,136
Other-than-temporary impairments [1] (92) (90)
Fixed Maturities [Member] | Variable Interest Entity Primary Beneficiary [Member]    
Held To Maturity Securities [Abstract]    
Amortized cost 2,707  
Total Held-To-Maturity, fair value 2,442  
Fixed Maturities [Member] | U S Treasury And Government [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 818 631
Gross unrealized gains 39 39
Gross unrealized losses (1) (3)
Total available-for-sale, fair value 856 667
Other-than-temporary impairments [1] 0 0
Fixed Maturities [Member] | US States And Political Subdivisions [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 1,779 1,644
Gross unrealized gains 83 94
Gross unrealized losses (11) (8)
Total available-for-sale, fair value 1,851 1,730
Other-than-temporary impairments [1] 0 0
Fixed Maturities [Member] | Foreign Governments [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 212 283
Gross unrealized gains 3 7
Gross unrealized losses (2) 0
Total available-for-sale, fair value 213 290
Other-than-temporary impairments [1] 0 0
Fixed Maturities [Member] | Corporate Obligations [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 1,772 1,984
Gross unrealized gains 31 44
Gross unrealized losses (104) (92)
Total available-for-sale, fair value 1,699 1,936
Other-than-temporary impairments [1] (88) (86)
Fixed Maturities [Member] | Residential Mortgage-Backed Agency [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 1,034 1,116
Gross unrealized gains 14 17
Gross unrealized losses (5) (7)
Total available-for-sale, fair value 1,043 1,126
Other-than-temporary impairments [1] 0 0
Fixed Maturities [Member] | Residential Mortgage-Backed Non-Agency [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 58 54
Gross unrealized gains 3 3
Gross unrealized losses (5) (4)
Total available-for-sale, fair value 56 53
Other-than-temporary impairments [1] (4) (4)
Fixed Maturities [Member] | Commercial Mortgage-Backed [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 16 19
Gross unrealized gains 0 1
Gross unrealized losses 0 0
Total available-for-sale, fair value 16 20
Other-than-temporary impairments [1] 0 0
Fixed Maturities [Member] | Collateralized Debt Obligations [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 82 113
Gross unrealized gains 0 0
Gross unrealized losses (20) (21)
Total available-for-sale, fair value 62 92
Other-than-temporary impairments [1] 0 0
Fixed Maturities [Member] | Other Asset-Backed [Member]    
Available For Sale Securities [Abstract]    
Amortized cost 371 231
Gross unrealized gains 2 3
Gross unrealized losses (10) (12)
Total available-for-sale, fair value 363 222
Other-than-temporary impairments [1] $ 0 $ 0
[1] Represents unrealized gains or losses on other than temporarily impaired securities recognized in AOCI, which includes the non-credit component of impairments, as well as all subsequent changes in fair value of such impaired securities reported in AOCI.