Marketable Securities and Equity Investments - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Summary of cash, cash equivalents and marketable securities
Cash	$ 5,500,000,000		$ 3,100,000,000
Allowance for credit loss for available-for-sale debt securities	0	$ 0
Debt securities fair value, unrealized loss position	2,280,000,000
Unrealized loss	24,200,000
Unrealized loss position for greater than twelve months	0
Original cost	72,100,000		$ 104,400,000
Publicly Traded Companies Sale
Summary of cash, cash equivalents and marketable securities
Proceeds received	95,100,000	$ 0
Original cost	57,300,000
Other Assets
Summary of cash, cash equivalents and marketable securities
Equity securities without readily determinable fair value, amount	$ 98,600,000