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Accounting Policies - Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Cash accounts, Amount	$ 447,907	$ 503,733
Money market funds, Amount	29,968	110,658
Total	$ 477,875	$ 614,391
Cash
Percent Of Cash And Cash Equivalents	93.70%	82.00%
Money Market Funds
Percent Of Cash And Cash Equivalents	6.30%	18.00%
Money Market Funds \| Money Market Fund Benchmark \| Money Market Fund Concentration Risk
Concentration risk, percentage	100.00%

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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