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DEBT - Senior Notes and Debt Redemption (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2017 | Mar. 31, 2022 | Mar. 31, 2021 | Jun. 30, 2021 | Feb. 29, 2020 | Mar. 31, 2019 | Nov. 30, 2014
Debt Instrument |  |  |  |  |  |  |  |  |
Repayment of debt |  |  |  | $ 345,000,000 | $ 70,000,000 |  |  |  |
Senior notes |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Redemption price |  |  |  | 101.00% |  |  |  |  |
Fair value disclosure |  |  |  | $ 3,610,000,000 |  | $ 3,980,000,000 |  |  |
Senior notes | 2020 Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  | $ 750,000,000 |  |
Senior notes | 2019 Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  |  | $ 1,200,000,000 |
Senior notes | 2014 Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  |  |  | $ 2,500,000,000
Repayment of debt | $ 500,000,000 | $ 250,000,000 | $ 250,000,000 |  |  |  |  |  |
Debt outstanding |  |  |  | $ 1,500,000,000 |  |  |  |  |

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