v3.20.2
Debt - Financing Matters Agreement, Senior Notes to Affiliates, Spectrum Financing and Consents on Debt to Third-Parties (Details)
3 Months Ended 6 Months Ended
Jul. 04, 2020
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Apr. 01, 2020
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May 18, 2018
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Jun. 30, 2020
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Jun. 30, 2019
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Sep. 30, 2018
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Jun. 30, 2018
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Jun. 30, 2020
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Jun. 30, 2019
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Jun. 24, 2020
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Apr. 09, 2020
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Dec. 31, 2019
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Mar. 31, 2018
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tower_site
Debt Instrument [Line Items]                          
Payments of consent fees       $ 109,000,000 $ 0     $ 109,000,000 $ 0        
Principal Amount       2,704,000,000       2,704,000,000          
Principal Issuances       46,000,000,000       46,000,000,000          
Payments for third party bank fees       5,604,000,000 $ 3,543,000,000     9,292,000,000 $ 6,985,000,000        
Short-term debt       3,818,000,000       3,818,000,000       $ 25,000,000  
Affiliates                          
Debt Instrument [Line Items]                          
Principal Amount       27,000,000,000       27,000,000,000          
Long-term debt | Affiliates                          
Debt Instrument [Line Items]                          
Repayment of debt               0          
Principal Amount       6,041,000,000       6,041,000,000          
Short-term Debt | Affiliates                          
Debt Instrument [Line Items]                          
Repayment of debt               0          
Principal Amount       2,000,000,000       2,000,000,000          
Incremental term loan facility to affiliates due 2022 | Affiliates                          
Debt Instrument [Line Items]                          
Principal Amount       2,000,000,000       $ 2,000,000,000          
Redemption Price (as a percent)               100.00%          
Incremental term loan facility to affiliates due 2024 | Affiliates                          
Debt Instrument [Line Items]                          
Principal Amount       2,000,000,000.0       $ 2,000,000,000.0          
Redemption Price (as a percent)               100.00%          
Senior Notes                          
Debt Instrument [Line Items]                          
Principal Issuances                   $ 4,000,000,000.0 $ 19,000,000,000.0    
Senior Notes | Sprint                          
Debt Instrument [Line Items]                          
Principal Issuances                         $ 3,900,000,000
Senior Notes | 5.300% Senior Notes due 2021 | Affiliates                          
Debt Instrument [Line Items]                          
Principal Amount       $ 2,000,000,000       $ 2,000,000,000          
Interest rate, stated percentage       5.30%       5.30%          
Redemption Price (as a percent)               100.00%          
Senior Notes | 5.125% Senior Notes Due 2025 | Subsequent Event | Affiliates                          
Debt Instrument [Line Items]                          
Interest rate, stated percentage 5.125%                        
Redemption Price (as a percent) 100.00%                        
Senior Notes | 6.500% Senior Notes due 2024 | Subsequent Event                          
Debt Instrument [Line Items]                          
Principal Amount $ 1,000,000,000.0                        
Interest rate, stated percentage 650.00%                        
Redemption Price (as a percent) 102.17%                        
Write-off of issuance costs $ 12,000,000                        
Senior Notes | Senior Secured Series 2016-1 A-1 Notes due 2021, 3.360%                          
Debt Instrument [Line Items]                          
Principal Amount       $ 219,000,000       $ 219,000,000          
Interest rate, stated percentage       3.36%       3.36%          
Spectrum Financing SPEs                          
Debt Instrument [Line Items]                          
Lease payments (per month)   $ 165,000,000                      
Sprint                          
Debt Instrument [Line Items]                          
Principal Issuances       $ 26,649,000,000       $ 26,649,000,000          
Notes issued and outstanding under Existing Sprint Spectrum Program (not exceed)     $ 7,000,000,000.0                    
Total outstanding obligation   5,000,000,000.0                      
Sprint | Credit Facilities                          
Debt Instrument [Line Items]                          
Financing commitment, amount     $ 9,000,000,000.0                    
Secured indebtedness, limit, percentage     150.00%                    
Secured debt to cash flow     2.00                    
Sprint | Secured Term Loan Facility                          
Debt Instrument [Line Items]                          
Financing commitment, amount   4,000,000,000.0                      
Sprint | Senior Secured Series 2018-1 A-1 Notes due 2025, 4.738%                          
Debt Instrument [Line Items]                          
Short-term debt       131,000,000       131,000,000          
Sprint | Senior Notes                          
Debt Instrument [Line Items]                          
Payments for third party bank fees           $ 6,000,000              
Payments for requisite consents to third-party note holders     $ 95,000,000     54,000,000              
Sprint | Senior Notes | Long-term debt                          
Debt Instrument [Line Items]                          
Payments of consent fees           17,000,000              
Sprint | Senior Notes | Existing Sprint Spectrum Notes                          
Debt Instrument [Line Items]                          
Payments for requisite consents to third-party note holders           41,000,000              
Sprint | Senior Notes | Existing Sprint Spectrum Notes | Long-term debt                          
Debt Instrument [Line Items]                          
Payments of consent fees           $ 14,000,000              
Sprint | Senior Notes | Senior Secured Series 2016-1 A-1 Notes due 2021, 3.360%                          
Debt Instrument [Line Items]                          
Principal Issuances   $ 3,500,000,000   1,094,000,000       1,094,000,000          
Interest rate, stated percentage   336.00%                      
Securitization program   $ 7,000,000,000.0                      
Payable term   5 years                      
Schedule principal repayments       219,000,000                  
Principal amount outstanding       1,100,000,000       1,100,000,000          
Number of senior secured notes | tower_site                         2
Sprint | Senior Notes | Senior Secured Series 2016-1 A-1 Notes due 2021, 3.360% | Short-term Debt                          
Debt Instrument [Line Items]                          
Principal amount outstanding       $ 875,000,000       $ 875,000,000          
Sprint | Senior Notes | Senior Secured Series 2018-1 A-1 Notes due 2025, 4.738%                          
Debt Instrument [Line Items]                          
Principal Issuances   $ 2,100,000,000                      
Interest rate, stated percentage   473.80%                      
Sprint | Senior Notes | Senior Secured Series 2018-1 A-2 Notes due 2028, 5.152%                          
Debt Instrument [Line Items]                          
Principal Issuances   $ 1,838,000,000                      
Interest rate, stated percentage   515.20%                      
Sprint | DT                          
Debt Instrument [Line Items]                          
Payments of consent fees             $ 7,000,000            
Payments for requisite consents to DT   $ 13,000,000                      
Sprint | DT | Secured Term Loan Facility                          
Debt Instrument [Line Items]                          
Repayment of debt   4,000,000,000.0                      
Sprint | DT | Senior Notes | Affiliates                          
Debt Instrument [Line Items]                          
Indebtedness to affiliates   4,000,000,000.0                      
Sprint | DT | Senior Notes | 5.300% Senior Notes due 2021                          
Debt Instrument [Line Items]                          
Principal Issuances   $ 2,000,000,000.0                      
Interest rate, stated percentage   5.30%                      
Sprint | DT | Senior Notes | 6.000% Senior Notes due 2024                          
Debt Instrument [Line Items]                          
Principal Issuances   $ 2,000,000,000.0                      
Interest rate, stated percentage   6.00%                      
Sprint | DT | Senior Notes | 5.125% Senior Notes Due 2025                          
Debt Instrument [Line Items]                          
Principal Issuances   $ 1,250,000,000                      
Interest rate, stated percentage   5.125%                      
Sprint | DT | Senior Notes | 5.375% Senior Notes Due 2027                          
Debt Instrument [Line Items]                          
Principal Issuances   $ 1,250,000,000                      
Interest rate, stated percentage   5.375%