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Leases - Summary Of Supplemental Balance Sheet Information Related To Leases (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Mar. 31, 2024 | Mar. 31, 2023
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Lessee Operating Leases [Line Items] |  |  |
Right-of-use assets | $ 300.1 | $ 344.3 | $ 116.8
Lease liabilities (current) |  | 44.4 | 37.7
Lease liabilities (non-current) |  | 329.7 | 96.4
Operating Leases |  | 374.1 | 134.1
Starz Business of Lions Gate Entertainment Corp |  |  |
Lessee Operating Leases [Line Items] |  |  |
Right-of-use assets | 38.6 | 44.5 | 52.2
Lease liabilities (current) | 9.7 | 9.0 | 9.7
Lease liabilities (non-current) | $ 48.1 | 55.4 | 62.8
Operating Leases |  | $ 64.4 | $ 72.5

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Details
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