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Fair Value of Financial Instruments (Tables) | 3 Months Ended
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Jun. 30, 2021
Fair Value Disclosures [Abstract] |
Summary of Carrying Amount and Fair Values | The following table shows the carrying amounts and fair values of the Company's debt obligations (in millions):
| June 30, 2021 |  | March 31, 2021
| Carrying Amount(1) |  | Fair Value |  | Carrying Amount(1) |  | Fair Value
Revolving Credit Facility | $ | 1,949.8 |  |  | $ | 1,958.6 |  |  | $ | 2,336.6 |  |  | $ | 2,346.6 |
3.922% 2021 Notes | — |  |  | — |  |  | 999.0 |  |  | 1,004.3 |
4.333% 2023 Notes | 993.1 |  |  | 1,062.1 |  |  | 992.3 |  |  | 1,022.4 |
2.670% 2023 Notes | 996.8 |  |  | 1,041.4 |  |  | 996.4 |  |  | 1,040.8 |
0.972% 2024 Notes | 1,394.7 |  |  | 1,396.6 |  |  | 1,394.2 |  |  | 1,394.0 |
0.983% 2024 Notes | 995.3 |  |  | 995.5 |  |  | — |  |  | — |
4.250% 2025 Notes | 1,186.2 |  |  | 1,260.2 |  |  | 1,185.5 |  |  | 1,252.6 |
2015 Senior Convertible Debt | 121.8 |  |  | 459.3 |  |  | 120.6 |  |  | 485.4 |
2017 Senior Convertible Debt | 262.9 |  |  | 729.1 |  |  | 260.2 |  |  | 731.4 |
2020 Senior Convertible Debt | 562.6 |  |  | 754.9 |  |  | 555.6 |  |  | 778.3 |
2017 Junior Convertible Debt | 64.2 |  |  | 276.0 |  |  | 63.7 |  |  | 272.9 |
Total | $ | 8,527.4 |  |  | $ | 9,933.7 |  |  | $ | 8,904.1 |  |  | $ | 10,328.7 |
(1) The carrying amounts presented are net of debt discounts and debt issuance costs (see Note 6 for further information).

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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