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Fair Value of Financial Instruments (Tables) | 9 Months Ended
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Dec. 31, 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):
| December 31, 2021 |  | March 31, 2021
| Carrying Amount(1) |  | Fair Value |  | Carrying Amount(1) |  | Fair Value
Revolving Credit Facility | $ | 1,528.9 |  |  | $ | 1,540.1 |  |  | $ | 2,336.6 |  |  | $ | 2,346.6 |
3.922% 2021 Notes | — |  |  | — |  |  | 999.0 |  |  | 1,004.3 |
4.333% 2023 Notes | 994.9 |  |  | 1,041.8 |  |  | 992.3 |  |  | 1,022.4 |
2.670% 2023 Notes | 997.5 |  |  | 1,022.5 |  |  | 996.4 |  |  | 1,040.8 |
0.972% 2024 Notes | 1,395.7 |  |  | 1,389.5 |  |  | 1,394.2 |  |  | 1,394.0 |
0.983% 2024 Notes | 996.0 |  |  | 985.1 |  |  | — |  |  | — |
4.250% 2025 Notes | 1,187.8 |  |  | 1,245.0 |  |  | 1,185.5 |  |  | 1,252.6 |
2015 Senior Convertible Debt | 30.3 |  |  | 132.7 |  |  | 120.6 |  |  | 485.4 |
2017 Senior Convertible Debt | 155.2 |  |  | 495.7 |  |  | 260.2 |  |  | 731.4 |
2020 Senior Convertible Debt | 576.8 |  |  | 841.9 |  |  | 555.6 |  |  | 778.3 |
2017 Junior Convertible Debt | 5.4 |  |  | 24.9 |  |  | 63.7 |  |  | 272.9 |
Total | $ | 7,868.5 |  |  | $ | 8,719.2 |  |  | $ | 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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