The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Number of shares issued for each share of convertible preferred stock that is converted.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

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Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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No definition available.

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Organization - Additional Information (Detail) - shares	3 Months Ended	9 Months Ended
Organization - Additional Information (Detail) - shares	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, shares authorized			22,701,005,000	4,000,000,000
Preferred stock, shares authorized	2,000,000,000	2,000,000,000	2,000,000,000	0
Common Class A [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, shares authorized	20,000,000,000	20,000,000,000	20,000,000,000	2,200,000,000
Common Class B [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, shares authorized	2,700,000,000	2,700,000,000	2,700,000,000	1,800,000,000
Number of shares issued for conversion		335,000
Common Class F [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, shares authorized	1,005,000	1,005,000	1,005,000	0
Common Stock [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Common stock shares issued upon conversion of convertible preferred stock	797,743,185	797,743,185
Issuance of common stock upon settlement of restricted stock units ("RSUs"), Shares	68,149,214