Investments and Fair Value Measurements - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($) oz
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized loss (gain) from marketable securities	$ 72.8
Alternative Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Weight of commodities purchased \| oz	100
Investment in Gold	$ 50.9
Commercial Contract [Member] \| Investment Agreement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revenue from customers with concurrent investment	$ 48.3
Maximum [Member] \| Commercial Contract [Member] \| Investment Agreement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Subscription Contract Term	10 years
Total contract value	$ 767.9
Contractual option amount	$ 116.2
Minimum [Member] \| Commercial Contract [Member] \| Investment Agreement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Subscription Contract Term	3 years

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Investments held in physical commodities, such as gold, silver, platinum, crude oil, coal, sugar, rice, wheat.

+ 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 210.5-02.12)
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Amount of unrealized gain (loss) on investment in marketable security.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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