INVESTMENTS ( M Loans) (DETAILS2) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Commercial Real Estate Portfolio Segment [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	$ 3,222	$ 2,976
Age Analysis of Past Due Mortgage Loans [Abstract]
30 to 59 Days Past Due	0	61
60 to 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	0	61
Current	3,222	2,915
Total financing receivables	3,222	2,976
Recorded Investment 90 Days Past Due and Still Accruing	0	0
Commercial Real Estate Portfolio Segment [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	603	383
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	603	383
Commercial Real Estate Portfolio Segment [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	204	293
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	204	293
Commercial Real Estate Portfolio Segment [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	914	844
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	914	844
Commercial Real Estate Portfolio Segment [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	1,074	754
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	1,074	754
Commercial Real Estate Portfolio Segment [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	247	585
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	247	585
Commercial Real Estate Portfolio Segment [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	180	117
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	180	117
Commercial Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	186	276
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	186	276
Commercial Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	151	182
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	151	182
Commercial Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	6	33
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	6	33
Commercial Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	1	30
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	1	30
Commercial Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	28	31
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	28	31
Commercial Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	1,679	1,216
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	1,679	1,216
Commercial Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	452	201
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	452	201
Commercial Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	163	252
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	163	252
Commercial Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	652	447
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	652	447
Commercial Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	412	271
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	412	271
Commercial Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	45
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	45
Commercial Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	847	852
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	847	852
Commercial Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	41	41
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	41	41
Commercial Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	187	280
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	187	280
Commercial Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	466	318
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	466	318
Commercial Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	138	213
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	138	213
Commercial Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	15	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	15	0
Commercial Real Estate Portfolio Segment [Member] | More than ninty percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	510	632
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	510	632
Commercial Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Commercial Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	69	84
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	69	84
Commercial Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	195	135
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	195	135
Commercial Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	81	296
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	81	296
Commercial Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	165	117
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	165	117
Commercial Real Estate Portfolio Segment [Member] | With No Related Allowance Recorded [Member]
Impaired Mortgage Loans [Abstract]
Recorded Investment	0	0
Unpaid principal balance	0	0
Related allowance	0	0
Average Record investments	0	0
Interest Income recognized	0	0
Commercial Real Estate Portfolio Segment [Member] | With Related Allowance Recorded [Member]
Impaired Mortgage Loans [Abstract]
Recorded Investment	170	202
Unpaid principal balance	170	202
Related allowance	(34)	(32)
Average Record investments	175	152
Interest Income recognized	2	8
Agricultural Real Estate Portfolio Segment [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	1,445	1,337
Age Analysis of Past Due Mortgage Loans [Abstract]
30 to 59 Days Past Due	4	5
60 to 89 Days Past Due	2	1
Greater than 90 Days Past Due	13	7
Total Past Due	19	13
Current	1,426	1,324
Total financing receivables	1,445	1,337
Recorded Investment 90 Days Past Due and Still Accruing	0	3
Agricultural Real Estate Portfolio Segment [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	253	218
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	253	218
Agricultural Real Estate Portfolio Segment [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	119	104
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	119	104
Agricultural Real Estate Portfolio Segment [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	297	276
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	297	276
Agricultural Real Estate Portfolio Segment [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	429	406
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	429	406
Agricultural Real Estate Portfolio Segment [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	277	272
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	277	272
Agricultural Real Estate Portfolio Segment [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	70	61
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	70	61
Agricultural Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	883	859
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	883	859
Agricultural Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	159	150
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	159	150
Agricultural Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	94	89
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	94	89
Agricultural Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	180	175
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	180	175
Agricultural Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	249	247
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	249	247
Agricultural Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	190	190
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	190	190
Agricultural Real Estate Portfolio Segment [Member] | Zero to fifty percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	11	8
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	11	8
Agricultural Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	551	469
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	551	469
Agricultural Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	94	68
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	94	68
Agricultural Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	25	15
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	25	15
Agricultural Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	117	101
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	117	101
Agricultural Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	179	158
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	179	158
Agricultural Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	85	82
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	85	82
Agricultural Real Estate Portfolio Segment [Member] | Fifty to seventy percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	51	45
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	51	45
Agricultural Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	11	9
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	11	9
Agricultural Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	1	1
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	1	1
Agricultural Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	2	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	2	0
Agricultural Real Estate Portfolio Segment [Member] | Seventy to ninty percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	8	8
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	8	8
Agricultural Real Estate Portfolio Segment [Member] | More than ninty percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | More than ninty percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Agricultural Real Estate Portfolio Segment [Member] | With No Related Allowance Recorded [Member]
Impaired Mortgage Loans [Abstract]
Recorded Investment	4	5
Unpaid principal balance	4	5
Related allowance	0	0
Average Record investments	4	5
Interest Income recognized	0	0
Agricultural Real Estate Portfolio Segment [Member] | With Related Allowance Recorded [Member]
Impaired Mortgage Loans [Abstract]
Recorded Investment	0	0
Unpaid principal balance	0	0
Related allowance	0	0
Average Record investments	0	0
Interest Income recognized	0	0
Total Mortgages Loan [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	4,667	4,313
Age Analysis of Past Due Mortgage Loans [Abstract]
30 to 59 Days Past Due	4	66
60 to 89 Days Past Due	2	1
Greater than 90 Days Past Due	13	7
Total Past Due	19	74
Current	4,648	4,239
Total financing receivables	4,667	4,313
Recorded Investment 90 Days Past Due and Still Accruing	0	3
Impaired Mortgage Loans [Abstract]
Recorded Investment	170
Unpaid principal balance	170
Related allowance	(34)
Average Record investments	175
Interest Income recognized	2
Total Mortgages Loan [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	856	601
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	856	601
Total Mortgages Loan [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	323	397
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	323	397
Total Mortgages Loan [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	1,211	1,120
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	1,211	1,120
Total Mortgages Loan [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	1,503	1,160
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	1,503	1,160
Total Mortgages Loan [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	524	857
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	524	857
Total Mortgages Loan [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	250	178
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	250	178
Total Mortgages Loan [Member] | Zero to fifty percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	1,069	1,135
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	1,069	1,135
Total Mortgages Loan [Member] | Zero to fifty percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	310	332
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	310	332
Total Mortgages Loan [Member] | Zero to fifty percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	94	89
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	94	89
Total Mortgages Loan [Member] | Zero to fifty percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	186	208
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	186	208
Total Mortgages Loan [Member] | Zero to fifty percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	250	277
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	250	277
Total Mortgages Loan [Member] | Zero to fifty percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	218	221
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	218	221
Total Mortgages Loan [Member] | Zero to fifty percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	11	8
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	11	8
Total Mortgages Loan [Member] | Fifty to seventy percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	2,230	1,685
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	2,230	1,685
Total Mortgages Loan [Member] | Fifty to seventy percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	546	269
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	546	269
Total Mortgages Loan [Member] | Fifty to seventy percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	188	267
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	188	267
Total Mortgages Loan [Member] | Fifty to seventy percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	769	548
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	769	548
Total Mortgages Loan [Member] | Fifty to seventy percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	591	429
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	591	429
Total Mortgages Loan [Member] | Fifty to seventy percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	85	127
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	85	127
Total Mortgages Loan [Member] | Fifty to seventy percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	51	45
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	51	45
Total Mortgages Loan [Member] | Seventy to ninty percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	858	861
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	858	861
Total Mortgages Loan [Member] | Seventy to ninty percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Total Mortgages Loan [Member] | Seventy to ninty percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	41	41
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	41	41
Total Mortgages Loan [Member] | Seventy to ninty percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	187	280
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	187	280
Total Mortgages Loan [Member] | Seventy to ninty percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	467	319
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	467	319
Total Mortgages Loan [Member] | Seventy to ninty percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	140	213
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	140	213
Total Mortgages Loan [Member] | Seventy to ninty percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	23	8
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	23	8
Total Mortgages Loan [Member] | More than ninty percent [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	510	632
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	510	632
Total Mortgages Loan [Member] | More than ninty percent [Member] | Ratio greater than 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Total Mortgages Loan [Member] | More than ninty percent [Member] | Ratio between 18 to 2 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	0	0
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	0	0
Total Mortgages Loan [Member] | More than ninty percent [Member] | Ratio between 15 to 18 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	69	84
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	69	84
Total Mortgages Loan [Member] | More than ninty percent [Member] | Ratio between 12 to 15 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	195	135
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	195	135
Total Mortgages Loan [Member] | More than ninty percent [Member] | Ratio between 1 to 12 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	81	296
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	81	296
Total Mortgages Loan [Member] | More than ninty percent [Member] | Ratio less than 1 times [Member]
Mortgage Loans by Loan-to-Value & Debt Service Coverage Ratios [Line Items]
Mortgage Loans on Real Estate, Face Amount of Mortgages	165	117
Age Analysis of Past Due Mortgage Loans [Abstract]
Total financing receivables	165	117
Total Mortgages Loan [Member] | With No Related Allowance Recorded [Member]
Impaired Mortgage Loans [Abstract]
Recorded Investment	4	5
Unpaid principal balance	4	5
Related allowance	0	0
Average Record investments	4	5
Interest Income recognized	0	0
Total Mortgages Loan [Member] | With Related Allowance Recorded [Member]
Impaired Mortgage Loans [Abstract]
Recorded Investment		202
Unpaid principal balance		202
Related allowance		(32)
Average Record investments		152
Interest Income recognized		$ 8