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Additional Financial Information (Accounts Receivable Monetization) (Details) - Trade Accounts Receivable - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2024
Individual Monetization Agreements |  |  |  |  |  |
Transfer of Financial Assets Accounted for as Sales [Line Items] |  |  |  |  |  |
Net cash proceeds received or (paid or to be paid) |  | $ 254.5 | $ 300.7 | $ 948.1 | $ 1,045.6 |
Carrying value of receivables transferred and derecognized |  | 258.0 | 305.9 | 963.3 | 1,065.9 |
Loss recorded related to transfers of receivables |  | 3.5 | 5.2 | 15.2 | 20.3 |
Derecognized accounts receivable for which the Company continues to service, amount outstanding |  | 534.4 |  | 534.4 |  | $ 613.4
Pooled Monetization Agreements |  |  |  |  |  |
Transfer of Financial Assets Accounted for as Sales [Line Items] |  |  |  |  |  |
Gross cash proceeds received for receivables transferred and derecognized |  |  |  |  | 22.2 |
Less amounts from collections reinvested under revolving agreement |  |  |  |  | (9.1) |
Proceeds from new transfers |  |  |  |  | 13.1 |
Collections not reinvested and remitted or to be remitted |  |  |  |  | (13.4) |
Net cash proceeds received or (paid or to be paid) |  |  |  |  | (0.3) |
Carrying value of receivables transferred and derecognized |  |  |  |  | 22.1 |
Obligations recorded |  |  |  |  | 2.1 |
Loss recorded related to transfers of receivables |  |  |  |  | 2.0 |
Derecognized accounts receivable for which the Company continues to service, amount outstanding |  | $ 0.0 |  | $ 0.0 |  | $ 0.0
Revolving agreement, maximum amount of receivables allowed to transfer | $ 100.0 |  |  |  |  |
Cash Flows Between Transferor and Transferee, Purchases of Previously Transferred Financial Assets |  |  | $ 46.0 |  | $ 46.0 |

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