Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Braves Holdings Notes (Details)

v3.10.0.1
Long-Term Debt - Braves Holdings Notes (Details)
shares in Thousands, $ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2018
USD ($)
shares
Sep. 30, 2017
USD ($)
Dec. 31, 2014
a
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]        
Outstanding principal $ 13,152      
Long-term Debt 13,398     $ 13,954
Borrowings of debt 2,310 $ 5,820    
Mixed Use Credit Facilities and Loans        
Debt Instrument [Line Items]        
Cash collateral $ 4      
Mixed Use Credit Facilities and Loans | AT&T        
Debt Instrument [Line Items]        
Shares pledged as collateral under loan | shares 225      
Share value $ 8      
Braves Holdings        
Debt Instrument [Line Items]        
Area of land acquired (in acres) | a     82  
Long-term Debt $ 626     667
Braves Holdings | Floating Rate Notes        
Debt Instrument [Line Items]        
Effective interest rate 4.04%      
Long-term Debt $ 71     75
Braves Holdings | Revolving Credit Facility | Operating Credit Facilities        
Debt Instrument [Line Items]        
Effective interest rate 3.21%      
Long-term Debt $ 46     98
Line of Credit Facility, Maximum Borrowing Capacity $ 185      
Braves Holdings | Revolving Credit Facility | Mixed Use Credit Facilities and Loans        
Debt Instrument [Line Items]        
Effective interest rate 4.05%      
Long-term Debt $ 236     200
Line of Credit Facility, Maximum Borrowing Capacity $ 255      
Braves Holdings | Revolving Credit Facility | Spring Training Credit Facility        
Debt Instrument [Line Items]        
Effective interest rate 3.26%      
Long-term Debt $ 25     39
Line of Credit Facility, Maximum Borrowing Capacity $ 40      
Braves Holdings | Term Loan | Term Loan        
Debt Instrument [Line Items]        
Effective interest rate 3.73%      
Long-term Debt $ 53     55
Braves Holdings | Senior Notes | Senior Secured Notes        
Debt Instrument [Line Items]        
Effective interest rate 3.77%      
Long-term Debt $ 195     $ 200