CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Balance at beginning of period (in shares) at Dec. 31, 2022		385,000,000
Balance at beginning of period at Dec. 31, 2022	$ 19,123	$ 0	$ 1,173	$ (370)	$ 18,320
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted common stock (in shares)		1,000,000
Exercise of options to purchase common stock (in shares)		3,000,000
Exercise of options to purchase common stock	19		19
Issuance of common stock under employee stock purchase plan	12		12
Stock-based compensation	226		226
Other comprehensive income (loss), net of tax	159			159
Repurchase of common stock, including excise tax (in shares)		(8,000,000)
Repurchase of common stock, including excise tax	1,153		1,153
Net income (loss)	(4,931)				(4,931)
Balance at end of period (in shares) at Sep. 30, 2023		381,000,000
Balance at end of period at Sep. 30, 2023	13,455	$ 0	277	(211)	13,389
Balance at beginning of period (in shares) at Jun. 30, 2023		381,000,000
Balance at beginning of period at Jun. 30, 2023	16,949	$ 0	193	(263)	17,019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of options to purchase common stock	6		6
Stock-based compensation	77		77
Other comprehensive income (loss), net of tax	52			52
Repurchase of common stock, including excise tax	1		1
Net income (loss)	(3,630)				(3,630)
Balance at end of period (in shares) at Sep. 30, 2023		381,000,000
Balance at end of period at Sep. 30, 2023	$ 13,455	$ 0	277	(211)	13,389
Balance at beginning of period (in shares) at Dec. 31, 2023	382,000,000	382,000,000
Balance at beginning of period at Dec. 31, 2023	$ 13,854	$ 0	371	(123)	13,606
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss), net of tax	$ 22
Balance at end of period at Mar. 31, 2024				(101)
Balance at beginning of period (in shares) at Dec. 31, 2023	382,000,000	382,000,000
Balance at beginning of period at Dec. 31, 2023	$ 13,854	$ 0	371	(123)	13,606
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Vesting of restricted common stock (in shares)		1,000,000
Exercise of options to purchase common stock (in shares)		1,000,000
Exercise of options to purchase common stock	39		39
Issuance of common stock under employee stock purchase plan (in shares)		1,000,000
Issuance of common stock under employee stock purchase plan	16		16
Stock-based compensation	325		325
Other comprehensive income (loss), net of tax	$ 134			134
Repurchase of common stock, including excise tax (in shares)	0
Net income (loss)	$ (2,441)				(2,441)
Balance at end of period (in shares) at Sep. 30, 2024	385,000,000	385,000,000
Balance at end of period at Sep. 30, 2024	$ 11,927	$ 0	751	11	11,165
Balance at beginning of period at Mar. 31, 2024				(101)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss), net of tax	30
Balance at end of period (in shares) at Jun. 30, 2024		384,000,000
Balance at end of period at Jun. 30, 2024	11,712	$ 0	631	(71)	11,152
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of options to purchase common stock	2		2
Issuance of common stock under employee stock purchase plan (in shares)		1,000,000
Issuance of common stock under employee stock purchase plan	6		6
Stock-based compensation	112		112
Other comprehensive income (loss), net of tax	$ 82			82
Repurchase of common stock, including excise tax (in shares)	0
Net income (loss)	$ 13				13
Balance at end of period (in shares) at Sep. 30, 2024	385,000,000	385,000,000
Balance at end of period at Sep. 30, 2024	$ 11,927	$ 0	$ 751	$ 11	$ 11,165