Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other current assets, due from related parties	$ 143	$ 73
Operating lease, right-of-use asset, from leases with related party	273	156
Other assets, due from related parties	50	32
Accounts payable and accrued liabilities, due to related parties	700	342
Other current liabilities, from leases with related parties	32	20
Operating lease liabilities, excluding current portion, from leases with related parties	$ 256	$ 148
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Class A Common Stock
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	85,569,000	76,512,000
Common stock, shares outstanding (in shares)	85,569,000	76,512,000
Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	125,000,000	125,000,000
Common stock, shares issued (in shares)	87,200,000	95,592,000
Common stock, shares outstanding (in shares)	87,200,000	95,592,000
Related Party
Other current assets, due from related parties	$ 10	$ 6
Operating lease, right-of-use asset, from leases with related party	20	22
Other assets, due from related parties	7	4
Accounts payable and accrued liabilities, due to related parties	23	16
Other current liabilities, from leases with related parties	4	3
Operating lease liabilities, excluding current portion, from leases with related parties	$ 15	$ 19