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Long-Term Debt - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Cash		$ 2,437,127		$ 2,501,452
Repayments of credit facilities		1,205,099	$ 527,535
Long-term debt		10,612,560		12,469,362
Fair value, excluding the redemption note		12,410,000		13,350,000
Long-term debt excluding the Redemption Note		$ 12,000,000		$ 13,150,000
WML \| Senior Secured Revolving Credit Facility \| Forecast
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity	$ 1,500,000
Term of facility	4 years
WML \| WML Credit Facilities \| Senior Secured Revolving Credit Facility \| Forecast
Debt Instrument [Line Items]
Repayments of credit facilities	$ 1,260,000