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Short-Term and Long-Term Debt (Short-Term Debt) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Short-term Debt [Line Items] |  |  |
Short-term debt | $ 867 |  | $ 925
Weighted average interest rate on outstanding short-term debt | 0.07% |  | 0.11%
Commercial paper |  |  |
Short-term Debt [Line Items] |  |  |
Short-term debt | $ 396 |  | $ 380
Weighted average maturity of outstanding commercial paper, in days | 21 days | 18 days |
Long-term debt |  |  |
Short-term Debt [Line Items] |  |  |
Long-term Debt, Current Maturities | $ 712 |  | 1,027
Short-term Debt |  |  |
Short-term Debt [Line Items] |  |  |
Long-term Debt, Current Maturities | 1,117 |  | 1,425
Borrowings due overnight | Commercial paper |  |  |
Short-term Debt [Line Items] |  |  |
Short-term debt | 258 |  | 75
Daily average outstanding | Commercial paper |  |  |
Short-term Debt [Line Items] |  |  |
Short-term debt | 1,424 |  | 1,602
Prudential Financial |  |  |
Short-term Debt [Line Items] |  |  |
Short-term debt | 425 |  | 424
Prudential Financial | Commercial paper |  |  |
Short-term Debt [Line Items] |  |  |
Short-term debt | 25 |  | 25
Prudential Funding, LLC | Commercial paper |  |  |
Short-term Debt [Line Items] |  |  |
Short-term debt | 371 |  | 355
Mortgages |  |  |
Short-term Debt [Line Items] |  |  |
Long-term Debt, Current Maturities | 62 |  | 128
Line of Credit |  |  |
Short-term Debt [Line Items] |  |  |
Short-term debt | 9 |  | 18
Long-term Debt, Current Maturities | 9 |  | 18
Senior notes | Long-term debt |  |  |
Short-term Debt [Line Items] |  |  |
Long-term Debt, Current Maturities | 400 |  | 399
Surplus notes subject to set-off arrangements |  |  |
Short-term Debt [Line Items] |  |  |
Long-term Debt, Current Maturities | 250 |  | 500
Assets Under Set-Off Arrangements |  |  |
Short-term Debt [Line Items] |  |  |
Short-term debt | $ 250 |  | $ 500

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- Definition Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition 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. + References No definition available. + Details
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- Definition Weighted average interest rate of short-term debt outstanding calculated at point in time. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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