Related Party Transactions - Schedule of Related Party Consolidated Balance Sheet Components (Details) - USD ($) $ in Millions |
12 Months Ended | |
---|---|---|
Dec. 30, 2016 |
Dec. 25, 2015 |
|
Related Party Transaction [Line Items] | ||
Payable to Affiliates | $ 0 | $ 0 |
Corporate Joint Venture | Accounts Payable | ||
Related Party Transaction [Line Items] | ||
Payable to Affiliates | 91 | 65 |
Corporate Joint Venture | Long-term Debt | 2.89% CSX promissory note due October 2044 | ||
Related Party Transaction [Line Items] | ||
Promissory notes payable to Conrail subsidiary | $ 73 | 73 |
Related party note, interest rate | 2.89% | |
Corporate Joint Venture | Long-term Debt | 2.89% CSXT promissory note due October 2044 | ||
Related Party Transaction [Line Items] | ||
Promissory notes payable to Conrail subsidiary | $ 151 | 151 |
Related party note, interest rate | 2.89% | |
TTX Company | Accounts Payable | ||
Related Party Transaction [Line Items] | ||
Payable to Affiliates | $ 47 | $ 40 |