INVESTMENTS (LOANS) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Commercial Real Estate Portfolio Segment
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	$ 4,847	$ 4,415
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	30	0
Current	4,817	4,415
Total financing receivables	4,847	4,415
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Commercial Real Estate Portfolio Segment \| With no related allowance recorded
Impaired Mortgage Loans [Abstract]
Recorded Investment	46	0
Unpaid Principal Balance	46	0
Related Allowance	0	0
Average Recorded Investment	15	0
Interest Income Recognized	0	0
Commercial Real Estate Portfolio Segment \| With related allowance recorded
Impaired Mortgage Loans [Abstract]
Recorded Investment	63	156
Unpaid Principal Balance	63	156
Related Allowance	(6)	(37)
Average Recorded Investment	137	148
Interest Income Recognized	4	2
Commercial Real Estate Portfolio Segment \| 30-59 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Commercial Real Estate Portfolio Segment \| 60-89 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Commercial Real Estate Portfolio Segment \| 90 Days Or Greater
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	30	0
Commercial Real Estate Portfolio Segment \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	2,129	1,665
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	2,129	1,665
Commercial Real Estate Portfolio Segment \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	353	440
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	353	440
Commercial Real Estate Portfolio Segment \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	1,049	933
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	1,049	933
Commercial Real Estate Portfolio Segment \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	1,045	1,163
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	1,045	1,163
Commercial Real Estate Portfolio Segment \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	225	167
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	225	167
Commercial Real Estate Portfolio Segment \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	46	47
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	46	47
Commercial Real Estate Portfolio Segment \| 0% - 50%
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	671	428
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	671	428
Commercial Real Estate Portfolio Segment \| 0% - 50% \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	533	335
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	533	335
Commercial Real Estate Portfolio Segment \| 0% - 50% \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment \| 0% - 50% \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	102	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	102	0
Commercial Real Estate Portfolio Segment \| 0% - 50% \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	12	59
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	12	59
Commercial Real Estate Portfolio Segment \| 0% - 50% \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	24	34
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	24	34
Commercial Real Estate Portfolio Segment \| 0% - 50% \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment \| 50% - 70%
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	3,416	3,168
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	3,416	3,168
Commercial Real Estate Portfolio Segment \| 50% - 70% \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	1,392	963
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	1,392	963
Commercial Real Estate Portfolio Segment \| 50% - 70% \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	353	440
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	353	440
Commercial Real Estate Portfolio Segment \| 50% - 70% \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	741	872
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	741	872
Commercial Real Estate Portfolio Segment \| 50% - 70% \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	853	839
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	853	839
Commercial Real Estate Portfolio Segment \| 50% - 70% \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	77	54
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	77	54
Commercial Real Estate Portfolio Segment \| 50% - 70% \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment \| 70% - 90%
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	651	616
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	651	616
Commercial Real Estate Portfolio Segment \| 70% - 90% \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	141	211
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	141	211
Commercial Real Estate Portfolio Segment \| 70% - 90% \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment \| 70% - 90% \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	206	61
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	206	61
Commercial Real Estate Portfolio Segment \| 70% - 90% \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	134	265
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	134	265
Commercial Real Estate Portfolio Segment \| 70% - 90% \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	124	79
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	124	79
Commercial Real Estate Portfolio Segment \| 70% - 90% \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	46	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	46	0
Commercial Real Estate Portfolio Segment \| 90% plus
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	109	203
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	109	203
Commercial Real Estate Portfolio Segment \| 90% plus \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	63	156
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	63	156
Commercial Real Estate Portfolio Segment \| 90% plus \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment \| 90% plus \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment \| 90% plus \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	46	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	46	0
Commercial Real Estate Portfolio Segment \| 90% plus \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment \| 90% plus \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	47
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	47
Agricultural Real Estate Portfolio Segment
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	2,330	2,085
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	23	11
Current	2,307	2,074
Total financing receivables	2,330	2,085
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	4	3
Agricultural Real Estate Portfolio Segment \| With no related allowance recorded
Impaired Mortgage Loans [Abstract]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Agricultural Real Estate Portfolio Segment \| With related allowance recorded
Impaired Mortgage Loans [Abstract]
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Agricultural Real Estate Portfolio Segment \| 30-59 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	12	1
Agricultural Real Estate Portfolio Segment \| 60-89 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	7	7
Agricultural Real Estate Portfolio Segment \| 90 Days Or Greater
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	4	3
Agricultural Real Estate Portfolio Segment \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	350	327
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	350	327
Agricultural Real Estate Portfolio Segment \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	196	187
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	196	187
Agricultural Real Estate Portfolio Segment \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	471	433
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	471	433
Agricultural Real Estate Portfolio Segment \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	734	631
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	734	631
Agricultural Real Estate Portfolio Segment \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	481	410
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	481	410
Agricultural Real Estate Portfolio Segment \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	98	97
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	98	97
Agricultural Real Estate Portfolio Segment \| 0% - 50%
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	1,336	1,180
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	1,336	1,180
Agricultural Real Estate Portfolio Segment \| 0% - 50% \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	204	184
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	204	184
Agricultural Real Estate Portfolio Segment \| 0% - 50% \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	116	100
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	116	100
Agricultural Real Estate Portfolio Segment \| 0% - 50% \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	277	232
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	277	232
Agricultural Real Estate Portfolio Segment \| 0% - 50% \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	432	408
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	432	408
Agricultural Real Estate Portfolio Segment \| 0% - 50% \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	256	206
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	256	206
Agricultural Real Estate Portfolio Segment \| 0% - 50% \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	51	50
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	51	50
Agricultural Real Estate Portfolio Segment \| 50% - 70%
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	988	905
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	988	905
Agricultural Real Estate Portfolio Segment \| 50% - 70% \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	146	143
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	146	143
Agricultural Real Estate Portfolio Segment \| 50% - 70% \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	80	87
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	80	87
Agricultural Real Estate Portfolio Segment \| 50% - 70% \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	192	201
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	192	201
Agricultural Real Estate Portfolio Segment \| 50% - 70% \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	298	223
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	298	223
Agricultural Real Estate Portfolio Segment \| 50% - 70% \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	225	204
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	225	204
Agricultural Real Estate Portfolio Segment \| 50% - 70% \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	47	47
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	47	47
Agricultural Real Estate Portfolio Segment \| 70% - 90%
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	6	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	6	0
Agricultural Real Estate Portfolio Segment \| 70% - 90% \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 70% - 90% \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 70% - 90% \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	2	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	2	0
Agricultural Real Estate Portfolio Segment \| 70% - 90% \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	4	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	4	0
Agricultural Real Estate Portfolio Segment \| 70% - 90% \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 70% - 90% \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 90% plus
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 90% plus \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 90% plus \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 90% plus \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 90% plus \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 90% plus \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment \| 90% plus \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	0	0
Total Mortgages Loan
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	7,177	6,500
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	53	11
Current	7,124	6,489
Total financing receivables	7,177	6,500
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	4	3
Total Mortgages Loan \| With no related allowance recorded
Impaired Mortgage Loans [Abstract]
Recorded Investment	46	0
Unpaid Principal Balance	46	0
Related Allowance	0	0
Average Recorded Investment	15	0
Interest Income Recognized	0	0
Total Mortgages Loan \| With related allowance recorded
Impaired Mortgage Loans [Abstract]
Recorded Investment	63	156
Unpaid Principal Balance	63	156
Related Allowance	(6)	(37)
Average Recorded Investment	137	148
Interest Income Recognized	4	2
Total Mortgages Loan \| 30-59 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	12	1
Total Mortgages Loan \| 60-89 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	7	7
Total Mortgages Loan \| 90 Days Or Greater
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	34	3
Total Mortgages Loan \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	2,479	1,992
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	2,479	1,992
Total Mortgages Loan \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	549	627
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	549	627
Total Mortgages Loan \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	1,520	1,366
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	1,520	1,366
Total Mortgages Loan \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	1,779	1,794
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	1,779	1,794
Total Mortgages Loan \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	706	577
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	706	577
Total Mortgages Loan \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	144	144
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	144	144
Total Mortgages Loan \| 0% - 50%
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	2,007	1,608
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	2,007	1,608
Total Mortgages Loan \| 0% - 50% \| Greater than 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	737	519
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	737	519
Total Mortgages Loan \| 0% - 50% \| 1.8x to 2.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	116	100
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	116	100
Total Mortgages Loan \| 0% - 50% \| 1.5x to 1.8x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	379	232
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	379	232
Total Mortgages Loan \| 0% - 50% \| 1.2x to 1.5x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	444	467
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	444	467
Total Mortgages Loan \| 0% - 50% \| 1.0x to 1.2x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	280	240
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	280	240
Total Mortgages Loan \| 0% - 50% \| Less than 1.0x
Mortgage Loans on Real Estate [Line Items]
Face amount of mortgage loans	51	50
Financing Receivable, Recorded Investment, Aging [Abstract]
Total financing receivables	51	50
Total Mortgages Loan \| 50% - 70%

INVESTMENTS (LOANS) (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2015

Dec. 31, 2014

Commercial Real Estate Portfolio Segment

Mortgage Loans on Real Estate [Line Items]

Face amount of mortgage loans

$ 4,847

$ 4,415

Financing Receivable, Recorded Investment, Aging [Abstract]

Total Past Due

Current