Quarterly report pursuant to Section 13 or 15(d)

Formula 1 Debt (Details)

v3.8.0.1
Formula 1 Debt (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Jun. 30, 2017
Jan. 23, 2017
Jan. 31, 2018
Sep. 30, 2017
May 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Aug. 03, 2017
Aug. 02, 2017
Debt Instrument [Line Items]                    
Long-term Debt           $ 14,113.0   $ 13,954.0    
Borrowings of debt           1,317.0 $ 1,844.0      
Repayments of Long-term Debt           1,154.0 1,154.0      
Cash and cash equivalents           $ 1,042.0   1,029.0    
Formula 1 | Senior Loan Facilities                    
Debt Instrument [Line Items]                    
Line of Credit Facility, Maximum Borrowing Capacity                 $ 500.0 $ 75.0
Debt Instrument, Description of Variable Rate Basis           LIBOR        
Effective interest rate           4.54%        
Formula 1 | First lien loan USD Tranche                    
Debt Instrument [Line Items]                    
Long-term Debt     $ 2.9           $ 3,300.0 $ 3,100.0
Repayments of Long-term Debt     400.0              
Line of Credit     250.0              
Cash and cash equivalents     $ 150.0              
Debt Instrument, Basis Spread on Variable Rate   3.75% 2.50% 3.00%   3.25%        
Formula 1 | First lien term loan Euro Tranche                    
Debt Instrument [Line Items]                    
Repayments of Long-term Debt $ 42.0                  
Formula 1 | Second Lien Facility                    
Debt Instrument [Line Items]                    
Long-term Debt   $ 1,000.0                
Formula 1 | Interest Rate Swap | First lien loan USD Tranche                    
Debt Instrument [Line Items]                    
Notional Amount of Interest Rate Cash Flow Hedge Derivatives           $ 2,500.0        
Formula 1 | Minimum | First lien loan USD Tranche                    
Debt Instrument [Line Items]                    
Debt Instrument, Description of Variable Rate Basis           1%        
Formula One Group                    
Debt Instrument [Line Items]                    
Long-term Debt           $ 5,558.0   $ 5,796.0    
Borrowings of debt           289.0 1,400.0      
Repayments of Long-term Debt           496.0 $ 928.0      
Cash and cash equivalents           270.0        
Formula One Group | Formula 1                    
Debt Instrument [Line Items]                    
Cash and cash equivalents           $ 140.0        
Formula One Group | Common Class C                    
Debt Instrument [Line Items]                    
Common Stock, Shares, Issued         12,900,000 202,790,466   202,720,588    
Proceeds from Liberty Braves common stock rights offering         $ 388.0