XML 180 R165.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |  |  |
Adoption of New Accounting Standard Current Expected Credit Losses | $ 0 |  | $ 14 |  | $ 0 |
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] |  |  |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |  |  |
Valuation Allowances and Reserves, Balance, Beginning Balance | 251 |  | 236 |  | 181 |
Valuation Allowances and Reserves, Charged to Cost and Expense | 18 |  | 4 |  | 56 |
Valuation Allowances and Reserves, Charged to Other Accounts | 15 |  | 19 |  | 1 |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction | 0 |  | 0 |  | 0 |
Valuation Allowances and Reserves, Balance, Ending Balance | 218 |  | 251 |  | 236 |
SEC Schedule, 12-09, Allowance, Loan and Lease Loss, Real Estate [Member] |  |  |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |  |  |
Valuation Allowances and Reserves, Balance, Beginning Balance | 64 | [1] | 12 | [1] | 11 |
Valuation Allowances and Reserves, Charged to Cost and Expense | 0 |  | 38 | [1] | 1 |
Valuation Allowances and Reserves, Charged to Other Accounts | 0 |  | 14 | [1] | 0 |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction | 29 |  | 0 | [1] | 0 |
Valuation Allowances and Reserves, Balance, Ending Balance | 35 |  | 64 | [1] | 12 | [1]
SEC Schedule, 12-09, Allowance, Loss on Finance Receivable |  |  |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |  |  |
Valuation Allowances and Reserves, Balance, Beginning Balance | 20 |  | 0 |  |  |
Valuation Allowances and Reserves, Charged to Cost and Expense | 27 |  | 41 |  |  |
Valuation Allowances and Reserves, Charged to Other Accounts | 0 |  | 0 |  |  |
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction | 16 |  | 21 |  |  |
Valuation Allowances and Reserves, Balance, Ending Balance | $ 31 |  | $ 20 |  | $ 0 |
[1] | Upon adoption of Financial Instruments – Credits Losses on January 1, 2020, the Company increased the valuation allowance for mortgage loans by $14 million. The increase was reflected as a decrease to opening retained earnings, net of income taxes.

X
- Definition Adoption of New Accounting Standard Current Expected Credit Losses + References No definition available. + Details
Name: | rga_AdoptionOfNewAccountingStandardCurrentExpectedCreditLosses
Namespace Prefix: | rga_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_MovementInValuationAllowancesAndReservesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(2)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column D)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesDeductions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_AllowanceForLoanAndLeaseLossesRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_AllowanceForLossesOnFinanceReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |