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Debt - Narrative (Details)
1 Months Ended 12 Months Ended
Nov. 30, 2020
USD ($)
tranche
offering
$ / shares
shares
Aug. 31, 2020
USD ($)
$ / shares
shares
Jun. 30, 2020
USD ($)
tranche
Apr. 30, 2020
USD ($)
shares
$ / shares
Nov. 30, 2020
USD ($)
day
shares
offering
tranche
$ / shares
Nov. 30, 2019
USD ($)
Nov. 30, 2018
USD ($)
Nov. 30, 2020
EUR (€)
tranche
offering
Jul. 31, 2020
USD ($)
tranche
Jul. 31, 2020
EUR (€)
tranche
Jun. 30, 2020
EUR (€)
tranche
Debt Instrument [Line Items]                      
Proceeds from short term debt         $ 525,000,000 $ 0 $ 2,000,000        
Repayments of short term debt         $ 526,000,000 0 2,000,000        
Debt instrument, convertible, conversion ratio         3.0            
Debt instrument, convertible, equity component minimum threshold         $ 5,000,000,000.0            
Debt instrument, convertible, debt to capital ratio maximum threshold         65.00%            
Line of credit, maturity period         12 years            
Loss on extinguishment of debt         $ (464,000,000) $ 0 $ 0        
November Registered Direct Offering                      
Debt Instrument [Line Items]                      
Number of registered direct offerings | offering 2       2     2      
Common stock | August Registered Direct Offering                      
Debt Instrument [Line Items]                      
Shares issued (in shares) | shares   99,200,000                  
Price per share (in dollars per share) | $ / shares   $ 14.02                  
Common stock | November Registered Direct Offering, Sale One                      
Debt Instrument [Line Items]                      
Shares issued (in shares) | shares 57,400,000                    
Price per share (in dollars per share) | $ / shares $ 18.05       $ 18.05            
Common stock | November Registered Direct Offering, Sale Two                      
Debt Instrument [Line Items]                      
Shares issued (in shares) | shares 10,400,000                    
Price per share (in dollars per share) | $ / shares $ 17.59       $ 17.59            
Senior Notes 3.95% due in 2020 and Senior Notes 1.625% due in 2021                      
Debt Instrument [Line Items]                      
Loss on extinguishment of debt         $ 5,000,000            
Export credit facilities with financial covenant waivers                      
Debt Instrument [Line Items]                      
Long-term debt $ 7,300,000,000       7,300,000,000            
Bank loans with financial covenant waivers                      
Debt Instrument [Line Items]                      
Long-term debt 2,100,000,000       2,100,000,000            
Bank loans remaining with financial covenant waivers                      
Debt Instrument [Line Items]                      
Long-term debt 479,000,000       479,000,000            
Secured Debt | Senior Secured Notes due 2023                      
Debt Instrument [Line Items]                      
Debt instrument, face amount       $ 4,000,000,000.0              
Debt instrument, interest rate (percent)       11.50%              
Debt Instrument, collateral 27,800,000,000       $ 27,800,000,000            
Secured Debt | Senior Secured Notes due 2023 | Maximum | On or After January 1, 2023                      
Debt Instrument [Line Items]                      
Debt instrument, redemption price, percentage (less than 98%)         101.00%            
Secured Debt | Senior Secured Term Loan Facility due 2025                      
Debt Instrument [Line Items]                      
Debt instrument, face amount     $ 2,800,000,000                
Number of tranches | tranche     2               2
Secured Debt | Senior Secured Term Loan Facility due 2025, Tranche One                      
Debt Instrument [Line Items]                      
Debt instrument, face amount     $ 1,900,000,000                
Secured Debt | Senior Secured Term Loan Facility due 2025, Tranche One | LIBOR                      
Debt Instrument [Line Items]                      
Debt instrument, floor rate on variable rate (percentage)     1.00%                
Debt instrument, variable rate (percent)     7.50%                
Secured Debt | Senior Secured Term Loan Facility due 2025, Tranche Two                      
Debt Instrument [Line Items]                      
Debt instrument, face amount | €                     € 800,000,000
Secured Debt | Senior Secured Term Loan Facility due 2025, Tranche Two | Eurodollar                      
Debt Instrument [Line Items]                      
Debt instrument, floor rate on variable rate (percentage)     0.00%                
Debt instrument, variable rate (percent)     7.50%                
Secured Debt | Senior Secured Term Loan Facility due 2026                      
Debt Instrument [Line Items]                      
Debt instrument, face amount                 $ 1,300,000,000    
Number of tranches | tranche                 2 2  
Secured Debt | Senior Secured Term Loan Facility due 2026, Tranche One                      
Debt Instrument [Line Items]                      
Debt instrument, face amount                 $ 775,000,000    
Debt instrument, interest rate (percent)                 10.50% 10.50%  
Secured Debt | Senior Secured Term Loan Facility due 2026, Tranche Two                      
Debt Instrument [Line Items]                      
Debt instrument, face amount | €                   € 425,000,000  
Debt instrument, interest rate (percent)                 10.10% 10.10%  
Secured Debt | Senior Secured Term Loan Facility due 2027                      
Debt Instrument [Line Items]                      
Debt instrument, face amount   $ 900,000,000                  
Debt instrument, interest rate (percent)   9.90%                  
Unsecured Debt | Senior Unsecured Term Loan Facility due 2026                      
Debt Instrument [Line Items]                      
Debt instrument, face amount $ 2,000,000,000.0       $ 2,000,000,000.0            
Number of tranches | tranche 2       2     2      
Unsecured Debt | Senior Unsecured Term Loan Facility due 2026, Tranche One                      
Debt Instrument [Line Items]                      
Debt instrument, face amount $ 1,500,000,000       $ 1,500,000,000            
Debt instrument, interest rate (percent) 7.60%       7.60%     7.60%      
Unsecured Debt | Senior Unsecured Term Loan Facility due 2026, Tranche Two                      
Debt Instrument [Line Items]                      
Debt instrument, face amount | €               € 500,000,000      
Debt instrument, interest rate (percent) 7.60%       7.60%     7.60%      
Convertible | Senior Convertible Notes due 2023                      
Debt Instrument [Line Items]                      
Long-term debt $ 461,000,000       $ 461,000,000            
Debt instrument, face amount       $ 2,000,000,000.0              
Debt instrument, interest rate (percent)       5.75%              
Debt instrument, convertible, number of shares | shares       100              
Conversion rate, amount       $ 1,000              
Debt instrument, conversion price (in dollars per share) | $ / shares       $ 10              
Repurchase amount 590,000,000 $ 886,000,000     590,000,000            
Loss on extinguishment of debt         464,000,000            
Debt instrument, convertible, carrying amount $ 286,000,000       $ 286,000,000            
Debt instrument, effective interest rate (percentage) 12.90%       12.90%     12.90%      
Debt instrument, convertible, carrying amount, after partial repurchase $ 0       $ 0            
Convertible | Senior Convertible Notes due 2023 | Measurement Period                      
Debt Instrument [Line Items]                      
Conversion rate, amount         $ 1,000            
Convertible threshold trading days | day         5            
Convertible threshold consecutive trading days | day         5            
Convertible | Senior Convertible Notes due 2023 | On or After January 1, 2023                      
Debt Instrument [Line Items]                      
Debt instrument, redemption price, percentage (less than 98%)         100.00%            
Debt instrument, convertible, number of shares | shares         100            
Conversion rate, amount         $ 1,000            
Convertible | Senior Convertible Notes due 2023 | Minimum | Before January 1, 2023                      
Debt Instrument [Line Items]                      
Debt instrument, redemption price, percentage (less than 98%)         130.00%            
Convertible threshold trading days | day         20            
Convertible threshold consecutive trading days | day         30            
Convertible | Senior Convertible Notes due 2023 | Minimum | Measurement Period                      
Debt Instrument [Line Items]                      
Debt instrument, redemption price, percentage (less than 98%)         98.00%