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STATEMENTS OF CONSOLIDATED CASH FLOWS (UNAUDITED) (Parenthetical) - Senior Notes | Jun. 30, 2021 | May 20, 2021 | Jun. 30, 2020 | May 01, 2020 | Apr. 28, 2020
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4.50% Senior Notes |  |  |  |  |
Debt instrument contractual rate (percent) | 4.50% | 4.50% |  |  |
6.50% Senior Notes |  |  |  |  |
Debt instrument contractual rate (percent) |  |  | 6.50% | 6.50% | 6.50%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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