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Fair Value Measurements, Equity Investments and Other Financial Instruments - Equity Investment Without Readily Determinable Fair Value Narrative (Details) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) investment | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2018 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |
Equity investment fair value |  |  |  | $ 25.4 | $ 12.3 |  | $ 45.8 |
Additional investment |  |  |  | $ 5.7 | 2.6 | $ 16.0 |  |
Upward adjustments |  |  | $ 6.6 |  | 0.0 |  | 6.6 |
Impairments or downward adjustments | $ 16.1 |  |  |  | 31.6 |  | 0.0 |
Number of investments | investment |  |  |  | 1 |  |  |  |
Cumulative upward adjustment |  |  |  |  | 21.7 |  | 21.7 |
Cumulative downward adjustment |  |  |  |  | 31.6 |  | 0.0 |
Cumulative adjustment, net |  |  |  |  | $ 9.9 |  |  |
Equity Securities |  |  |  |  |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |
Equity investment fair value | $ 0.0 |  |  |  |  |  | 31.6 |
Additional investment |  |  |  |  |  |  | $ 9.0 | $ 7.5
Upward adjustments |  |  |  | $ 15.1 |  |  |  |
Impairments or downward adjustments |  | $ 15.5 |  |  |  |  |  |

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- Definition Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Cumulative Amount, Net of Downward Adjustments + References No definition available. + Details
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- Definition Number of investments + References No definition available. + Details
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- Definition Amount of investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714 + Details
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- Definition Amount of loss from downward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714 + Details
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- Definition Amount of cumulative loss from downward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714 + Details
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- Definition Amount of gain from upward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117539-209714 + Details
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- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
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