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Earnings Per Share - Narrative (Details) - $ / shares	3 Months Ended	12 Months Ended
Earnings Per Share - Narrative (Details) - $ / shares	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Apr. 01, 2020
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000	2,000,000,000		2,000,000,000
SoftBank contingent consideration (1)
Class of Stock [Line Items]
Potentially dilutive securities (in shares)	48,751,557	36,630,268	0	0
Mandatory Convertible Preferred Stock Series A
Class of Stock [Line Items]
Preferred shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, par value (in USD per share)	$ 0.00001	$ 0.00001
Preferred shares outstanding (in shares)	0	0	0