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v3.21.1

Debt - Public Debt (Details) - USD ($) $ in Millions |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 03, 2021 | Jan. 15, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020
5.400% Notes, due 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Early redemption of debt |  | $ 361 |  |  |
Long-term debt, interest rate |  | 5.40% |  |  | 5.40%
Accrued interest paid |  | $ 5 |  |  |
Interest expense |  | $ 19 |  |  |
Amount outstanding |  |  |  | $ 0 | $ 361
5.870% Notes, due 2022 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, interest rate |  |  |  | 5.87% |
Amount outstanding |  |  |  | $ 476 | $ 476
5.870% Notes, due 2022 | Subsequent Event |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Accrued interest paid | $ 5 |  |  |  |
Interest expense | 28 |  |  |  |
Payment for early redemption of debt | $ 503 |  |  |  |
5.870% Notes, due 2022 | Forecast |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Early termination premium |  |  | $ 22 |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: 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(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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