XML 83 R61.htm IDEA: XBRL DOCUMENT v3.10.0.1
Investments (Mortgage Loans and Valuation Allowance by Portfolio Segment) (Details) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance $ 13 $ 22
Impaired Financing Receivable, with Related Allowance, Recorded Investment 13 21
Impaired Financing Receivable, Related Allowance 2 2
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance 513 385
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 473 351
Financing Receivable, Collectively Evaluated for Impairment 70,286 68,153
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment 323 312
Impaired Financing Receivable, Recorded Investment 484 370
Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance 0 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment 0 0
Impaired Financing Receivable, Related Allowance 0 0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance 0 0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 0
Financing Receivable, Collectively Evaluated for Impairment 46,075 44,375
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment 227 214
Impaired Financing Receivable, Recorded Investment 0 0
Agricultural Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance 13 22
Impaired Financing Receivable, with Related Allowance, Recorded Investment 13 21
Impaired Financing Receivable, Related Allowance 2 2
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance 112 27
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 111 27
Financing Receivable, Collectively Evaluated for Impairment 13,169 12,966
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment 39 39
Impaired Financing Receivable, Recorded Investment 122 46
Residential Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance 0 0
Impaired Financing Receivable, with Related Allowance, Recorded Investment 0 0
Impaired Financing Receivable, Related Allowance 0 0
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance 401 358
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 362 324
Financing Receivable, Collectively Evaluated for Impairment 11,042 10,812
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment 57 59
Impaired Financing Receivable, Recorded Investment $ 362 $ 324