Deferred commercial mortgage loan interest and principal payments due to COVID-19

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The percentage of all mortgage loans that are classified as performing.

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- Definition

Percentage of commercial and agricultural mortgage loans with LTV ratio in excess of 100%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of financing receivable on nonaccrual status with no allowance for credit loss.

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Amount of financing receivable on nonaccrual status.

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- Definition

Amount of increase from purchase of financing receivable.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Amount, before allowance for credit loss, of financing receivable.

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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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Investments (Mortgage Loans - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	$ 843		$ 843		$ 944
Financing Receivable, Purchase	532	$ 417	986	$ 1,700
Mortgage Loans, Gross	$ 81,927		$ 81,927		$ 84,344
Percentage of Mortgage Loans Classified as Performing	99.00%		99.00%		99.00%
Financing Receivable, Nonaccrual	$ 888		$ 888		$ 1,117
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of mortgage loans with LTV ratio in excess of 100%	1.00%		1.00%
Mortgage Loans with LTV ratio in excess of 100% [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans, Gross	$ 668		$ 668
Commercial Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Receivable	193		193		209
Deferred mortgage loan interest and principal payments	30		30
Mortgage Loans, Gross	51,602		51,602		52,434
Financing Receivable, Nonaccrual	163		163		317	$ 176
Financing Receivable, Nonaccrual, No Allowance	0		0		168
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Receivable	100		100		108
Deferred mortgage loan interest and principal payments	34		34
Mortgage Loans, Gross	12,281		12,281		13,782
Financing Receivable, Nonaccrual	466		466		534	418
Financing Receivable, Nonaccrual, No Allowance	0		0		0
Agricultural Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Receivable	156		156		174
Deferred mortgage loan interest and principal payments	4		4
Mortgage Loans, Gross	18,044		18,044		18,128
Financing Receivable, Nonaccrual	259		259		266	$ 137
Financing Receivable, Nonaccrual, No Allowance	$ 192		$ 192		$ 178