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SCHEDULE III - CONDENSED SUPPLEMENTARY INSURANCE INFORMATION (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Supplementary Insurance Information, by Segment [Line Items] |  |  |  |
DAC and VOBA |  | $ 8,403 | $ 9,134 | $ 9,510
Future Contract Benefits |  | 22,887 | 21,576 | 20,708
Unearned Premiums | [1] |  |  |
Other Contract Holder Funds |  | 80,209 | 78,903 | 77,362
Insurance Premiums |  | 3,256 | 2,987 | 3,246
Net Investment Income |  | 4,990 | 4,874 | 4,827
Benefits and Interest Credited |  | 7,750 | 7,256 | 7,552
Amortization of DAC and VOBA |  | 1,004 | 1,276 | 1,271
Other Operating Expenses |  | 3,468 | 3,403 | 3,319
Premiums Written |  |  |  |
Annuities Segment [Member] |  |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |  |
DAC and VOBA |  | 3,583 | 3,597 | 3,558
Future Contract Benefits |  | 1,943 | 2,485 | 2,095
Unearned Premiums | [1] |  |  |
Other Contract Holder Funds |  | 21,713 | 21,202 | 21,162
Insurance Premiums |  | 475 | 331 | 418
Net Investment Income |  | 1,038 | 1,033 | 1,004
Benefits and Interest Credited |  | 1,084 | 1,130 | 1,259
Amortization of DAC and VOBA |  | 430 | 388 | 330
Other Operating Expenses |  | 1,397 | 1,296 | 1,317
Premiums Written |  |  |  |
Retirement Plan Services Segment [Member] |  |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |  |
DAC and VOBA |  | 194 | 201 | 216
Future Contract Benefits |  | 4 | 4 | 4
Unearned Premiums | [1] |  |  |
Other Contract Holder Funds |  | 18,719 | 17,878 | 16,583
Net Investment Income |  | 899 | 859 | 846
Benefits and Interest Credited |  | 538 | 515 | 497
Amortization of DAC and VOBA |  | 27 | 28 | 30
Other Operating Expenses |  | 396 | 386 | 385
Premiums Written |  |  |  |
Life Insurance Segment [Member] |  |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |  |
DAC and VOBA |  | 4,446 | 5,145 | 5,496
Future Contract Benefits |  | 12,658 | 11,400 | 10,595
Unearned Premiums | [1] |  |  |
Other Contract Holder Funds |  | 39,459 | 39,332 | 38,706
Insurance Premiums |  | 773 | 703 | 649
Net Investment Income |  | 2,643 | 2,562 | 2,541
Benefits and Interest Credited |  | 4,593 | 4,071 | 3,938
Amortization of DAC and VOBA |  | 468 | 734 | 831
Other Operating Expenses |  | 721 | 688 | 650
Premiums Written |  |  |  |
Group Protection Segment [Member] |  |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |  |
DAC and VOBA |  | 180 | 191 | 240
Future Contract Benefits |  | 2,262 | 2,280 | 2,347
Unearned Premiums | [1] |  |  |
Other Contract Holder Funds |  | 161 | 168 | 170
Insurance Premiums |  | 1,998 | 1,939 | 2,163
Net Investment Income |  | 168 | 176 | 184
Benefits and Interest Credited |  | 1,353 | 1,324 | 1,638
Amortization of DAC and VOBA |  | 79 | 126 | 80
Other Operating Expenses |  | 611 | 580 | 573
Premiums Written |  |  |  |
Other Operations [Member] |  |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |  |
Future Contract Benefits |  | 6,020 | 5,407 | 5,667
Unearned Premiums | [1] |  |  |
Other Contract Holder Funds |  | 157 | 323 | 741
Insurance Premiums |  | 10 | 14 | 16
Net Investment Income |  | 242 | 244 | 252
Benefits and Interest Credited |  | 182 | 216 | 220
Other Operating Expenses |  | 343 | 453 | 394
Premiums Written |  |  |  |
[1] | Unearned premiums are included in Column C, future contract benefits.

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