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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, 2021 | Dec. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2021
Individual Monetization Agreements |  |  |  |  |  |
Transfer of Financial Assets Accounted for as Sales [Line Items] |  |  |  |  |  |
Net cash proceeds received or (paid or to be paid) |  | $ 334.2 | $ 351.5 | $ 1,077.6 | $ 1,004.3 |
Carrying value of receivables transferred and derecognized |  | 336.2 | 353.2 | 1,083.9 | 1,008.3 |
Loss (gain) recorded related to transfers of receivables |  | 2.1 | 1.7 | 6.2 | 3.9 |
Derecognized accounts receivable for which the Company continues to service, amount outstanding |  | 463.7 |  | 463.7 |  | $ 562.8
Pooled Monetization Agreements |  |  |  |  |  |
Transfer of Financial Assets Accounted for as Sales [Line Items] |  |  |  |  |  |
Gross cash proceeds received for receivables transferred and derecognized |  | 20.4 | 40.8 | 111.8 | 126.8 |
Less amounts from collections reinvested under revolving agreement |  | (12.1) | (32.5) | (76.0) | (107.4) |
Proceeds from new transfers |  | 8.3 | 8.3 | 35.8 | 19.4 |
Collections not reinvested and remitted or to be remitted |  | (10.8) | (11.5) | (44.4) | (25.8) |
Net cash proceeds received or (paid or to be paid) |  | (2.5) | (3.2) | (8.6) | (6.4) |
Carrying value of receivables transferred and derecognized |  | 20.3 | 40.4 | 110.9 | 126.0 |
Obligations recorded |  | 0.0 | 0.7 | 0.9 | 1.4 |
Loss (gain) recorded related to transfers of receivables |  | (0.1) | $ 0.3 | 0.0 | $ 0.5 |
Purchases of receivables previously transferred |  | 25.5 |  | 25.5 |  |
Derecognized accounts receivable for which the Company continues to service, amount outstanding |  | 64.9 |  | 64.9 |  | $ 99.0
Revolving agreement, maximum amount of receivables allowed to transfer | $ 150.0 |  |  |  |  |
Accounts receivable pledged as collateral under pooled monetization agreement |  | $ 52.0 |  | $ 52.0 |  |

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