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Leases - Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2025 USD ($) ft² | Jun. 30, 2024 USD ($) ft² | Oct. 31, 2023 USD ($) ft² | Dec. 31, 2023 USD ($) ft² tranche | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) ft² tranche | Dec. 31, 2022 USD ($) | Dec. 31, 2017
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Lease, renewal term |  |  |  |  | 5 years |  |  |
Operating sublease, extension term |  |  |  |  | 4 years |  |  |
Sublease income |  |  |  |  | $ 14.0 | $ 15.3 |  |
Non-lease component |  |  |  |  | 200.1 |  |  |
Asset impairment charges |  |  |  |  | 0.1 | 3.6 | $ 175.2 |
Total liability |  |  |  |  | 315.3 |  |  |
Lease not yet commenced, amount |  |  |  |  | 84.0 |  |  |
Corporate Headquarters Lease |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Operating lease, term of contract |  |  |  |  |  |  |  | 15 years
Minimum obligations |  |  |  |  | 170.7 |  |  |
Gain on partial operating lease termination |  |  |  | $ 158.8 |  | 158.8 |  |
Total liability |  |  |  |  | 133.3 |  |  |
Operating lease, unrecoverable maintenance costs liability |  |  |  | $ 70.0 | 51.7 | $ 70.0 |  |
Corporate Headquarters Lease | Bridge Loan | Line of Credit |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Letter of credit |  |  |  |  | $ 17.5 |  |  |
Corporate Headquarters Lease Amendment |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Area of leased property surrendered | ft² |  | 54,000 | 52,000 | 165,000 |  | 165,000 |  |
Lease termination liability |  |  |  | $ 79.0 |  | $ 79.0 |  |
Number of tranches | tranche |  |  |  | 3 |  | 3 |  |
Lease termination payment |  | $ 14.9 | $ 28.1 |  |  |  |  |
Corporate Headquarters Lease Amendment | Subsequent Event |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Area of leased property surrendered | ft² | 59,000 |  |  |  |  |  |  |
Lease termination payment | $ 36.0 |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Lease, remaining lease term |  |  |  |  | 1 year |  |  |
Operating sublease, term |  |  |  |  | 1 year |  |  |
Operating leases, not yet commenced, term of contract |  |  |  |  | 6 years |  |  |
Maximum |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Lease, remaining lease term |  |  |  |  | 12 years |  |  |
Operating sublease, term |  |  |  |  | 9 years |  |  |
Operating leases, not yet commenced, term of contract |  |  |  |  | 7 years |  |  |

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