XML 63 R49.htm IDEA: XBRL DOCUMENT v3.21.2
Convertible Notes - Additional Information (Details)
1 Months Ended 3 Months Ended 9 Months Ended
Jan. 01, 2021
USD ($)
Apr. 30, 2021
USD ($)
d
$ / shares
shares
Apr. 30, 2020
USD ($)
$ / shares
shares
Aug. 31, 2019
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
$ / shares
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]                  
Proceeds from issuance of convertible notes, net of issuance costs             $ 1,137,227,000 $ 988,582,000  
Accumulated deficit         $ (8,307,016,000)   (8,307,016,000)   $ (7,891,542,000)
Convertible senior notes, net         2,252,079,000   2,252,079,000   $ 1,675,169,000
Amortization of debt discount and issuance costs         1,109,000 $ 24,503,000 3,301,000 56,478,000  
Induced conversion expense related to convertible notes         4,536,000   41,538,000    
Exchange Agreements                  
Debt Instrument [Line Items]                  
Induced conversion expense related to convertible notes         $ 4,500,000   41,500,000    
Shares issued under original terms of general conversion with net carrying amount             $ 1,132,600,000    
Cumulative Effect, Period of Adoption, Adjustment                  
Debt Instrument [Line Items]                  
Accumulated deficit $ (95,000,000.0)                
Additional paid-in capital (664,000,000.0)                
Convertible senior notes, net $ 569,000,000.0                
Accounting Standards Update 2020-06                  
Debt Instrument [Line Items]                  
Change in accounting principle, accounting standards update, adoption date         Jan. 01, 2021   Jan. 01, 2021    
Change in accounting principle, accounting standards update, early adoption [true false]         true   true    
Change in accounting principle, accounting standards update, transition option elected             us-gaap:AccountingStandardsUpdate202006RetrospectiveMember    
Class A Non-voting Common Stock | Exchange Agreements                  
Debt Instrument [Line Items]                  
Shares issued upon conversion | shares             52,400,000    
Additional shares issued upon conversion | shares             700,000    
Fair value of induced conversion exchange shares | shares             700,000    
2027 Notes                  
Debt Instrument [Line Items]                  
Debt instrument, principal amount   $ 1,150,000,000     $ 1,150,000,000   $ 1,150,000,000    
Indenture date   Apr. 30, 2021              
Proceeds from issuance of convertible notes, net of issuance costs   $ 1,050,000,000.00              
Debt instrument, maturity date   May 01, 2027              
Debt instrument, redemption price percentage   100.00%              
Debt instrument convertible, amortization period             5 years 7 months 6 days    
Cap price, net cost         $ 86,800,000   $ 86,800,000    
2027 Notes | Class A Non-voting Common Stock                  
Debt Instrument [Line Items]                  
Number of shares issued upon conversion | shares   11.2042              
Debt instrument, convertible principal amount used in conversion rate   $ 1,000              
Conversion price per share | $ / shares   $ 89.25              
Debt instrument convertible, percentage of conversion price   130.00%              
Debt instrument convertible, number of trading days | d   20              
Debt instrument, redemption price percentage   100.00%              
Cap price, per share | $ / shares         $ 121.02   $ 121.02    
2027 Notes | Class A Non-voting Common Stock | Scenario One                  
Debt Instrument [Line Items]                  
Debt instrument convertible, percentage of conversion price   130.00%              
Debt instrument convertible, number of trading days | d   20              
Debt instrument convertible, number of consecutive trading days | d   30              
2027 Notes | Class A Non-voting Common Stock | Scenario Two                  
Debt Instrument [Line Items]                  
Debt instrument, convertible principal amount used in conversion rate   $ 1,000              
Debt instrument convertible, number of consecutive trading days | d   10              
Debt instrument, convertible, threshold business days   5 days              
2027 Notes | Class A Non-voting Common Stock | Scenario Two | Maximum                  
Debt Instrument [Line Items]                  
Debt instrument convertible, percentage of conversion price   98.00%              
2025 Notes                  
Debt Instrument [Line Items]                  
Debt instrument, principal amount     $ 1,000,000,000.0   $ 284,105,000   $ 284,105,000    
Debt instrument, maturity date     May 01, 2025            
Proceeds from issuance of convertible notes, net of issuance costs     $ 888,600,000            
Interest payment beginning date     Nov. 01, 2020            
Debt instrument, interest rate     0.25%            
Debt instrument, interest rate terms             Interest is payable in cash semi-annually in arrears beginning on November 1, 2020 at a rate of 0.25% per year.    
Debt instrument convertible, amortization period             3 years 7 months 6 days    
If-converted value exceeding principal amount             $ 683,900,000    
Cap price, net cost         $ 100,000,000.0   100,000,000.0    
2025 Notes | Exchange Agreements                  
Debt Instrument [Line Items]                  
Debt conversion, principal amount             $ 715,900,000    
2025 Notes | Class A Non-voting Common Stock                  
Debt Instrument [Line Items]                  
Number of shares issued upon conversion | shares     46.1233            
Debt instrument, convertible principal amount used in conversion rate     $ 1,000            
Conversion price per share | $ / shares     $ 21.68            
Cap price, per share | $ / shares         $ 32.12   $ 32.12    
2026 Notes                  
Debt Instrument [Line Items]                  
Debt instrument, principal amount       $ 1,265,000,000 $ 838,495,000   $ 838,495,000    
Debt instrument, maturity date       Aug. 01, 2026          
Proceeds from issuance of convertible notes, net of issuance costs       $ 1,150,000,000          
Interest payment beginning date       Feb. 01, 2020          
Debt instrument, interest rate       0.75%          
Debt instrument, interest rate terms             Interest is payable in cash semi-annually in arrears beginning on February 1, 2020 at a rate of 0.75% per year.    
Debt instrument convertible, amortization period             4 years 9 months 18 days    
If-converted value exceeding principal amount             $ 1,900,000,000    
Cap price, net cost         $ 102,100,000   102,100,000    
2026 Notes | Exchange Agreements                  
Debt Instrument [Line Items]                  
Debt conversion, principal amount             $ 426,500,000    
2026 Notes | Class A Non-voting Common Stock                  
Debt Instrument [Line Items]                  
Number of shares issued upon conversion | shares       43.8481          
Debt instrument, convertible principal amount used in conversion rate       $ 1,000          
Conversion price per share | $ / shares       $ 22.81          
Cap price, per share | $ / shares         $ 32.58   $ 32.58    
2025, 2026 and 2027 Notes                  
Debt Instrument [Line Items]                  
Amortization of debt issuance costs         $ 1,100,000   $ 3,300,000    
Amortization of debt discount and issuance costs           24,500,000   56,500,000  
Contractual interest expense         $ 1,900,000 $ 3,000,000.0 $ 7,200,000 $ 8,200,000  
Initial Placement | 2027 Notes                  
Debt Instrument [Line Items]                  
Debt instrument, principal amount   $ 1,000,000,000.0              
Over-Allotment Option | 2027 Notes                  
Debt Instrument [Line Items]                  
Debt instrument, principal amount   $ 150,000,000.0