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Financial Instruments - Summary of Equity Investment Activity (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Equity investments | $ 26.9 | $ 60.1
Level 1: |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Equity investments | 26.9 | 60.1
Changes in Fair Value | (17.7) |
Sales/Purchases/Others | (15.5) |
Level 2: |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Equity investments without readily determinable value, Carrying Value | 15.6 | $ 30.2
Changes in fair value | 43.8 |
Sales/Purchases/Others | (58.4) |
Prepaid and other current assets | Level 1: |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Equity investments | 26.9 |
Prepaid and other current assets | Level 2: |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Equity investments without readily determinable value, Carrying Value | 0.0 |
Intangible and other assets, net | Level 1: |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Equity investments | 0.0 |
Intangible and other assets, net | Level 2: |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Equity investments without readily determinable value, Carrying Value | $ 15.6 |

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