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Commitments and Contingencies (Narrative) (Details) $ in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 09, 2018 USD ($) | Aug. 30, 2016 | Mar. 31, 2019 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($) | Nov. 05, 2018 USD ($) | Mar. 31, 2017 USD ($)
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Redeemable noncontrolling interest |  |  | $ 127.6 | $ 167.8 | $ 127.6 | $ 101.8 |  | $ 93.8
Multiemployer benefit plans, funded status |  |  |  | At least 80 percent |  |  |  |
Multiemployer benefit plans, period contributions |  |  |  | $ 55.5 | 56.9 | $ 70.9 |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Contingencies, putative class action complaints filed, number |  | 7 |  |  |  |  |  |
Motion Picture Industry Pension Plan |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Multiemployer benefit plans, funded percentage |  |  |  | 66.50% |  |  |  |
Screen Actors Guild - Producers Pension Plan |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Multiemployer benefit plans, funded percentage |  |  |  | 76.44% |  |  |  |
Fiduciary Litigation |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Settlement payment amount | $ 92.5 |  |  |  | 92.5 |  |  |
Insurance reimbursement, amount |  |  | $ 37.8 |  | $ 37.8 |  |  |
Lawsuit for insurance reimbursement, amount |  |  |  |  |  |  | $ 10.0 |

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- Definition Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.27(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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