Summarized Consolidating Financial Data - Consolidating Cash Flow Statements (Details) - USD ($)
$ in Millions |
3 Months Ended |
Mar. 25, 2016 |
Mar. 27, 2015 |
| Operating Activities |
|
|
| Net Cash Provided by (Used in) Operating Activities |
$ 754
|
$ 690
|
| Investing Activities |
|
|
| Property Additions |
(425)
|
(598)
|
| Purchase of Short-term Investments |
(235)
|
(105)
|
| Proceeds from Sales of Short-term Investments |
670
|
140
|
| Other Investing Activities |
31
|
63
|
| Net Cash Provided by (Used in) Investing Activities |
41
|
(500)
|
| Financing Activities |
|
|
| Dividends Paid |
(173)
|
(158)
|
| Shares Repurchased |
(249)
|
(127)
|
| Other Financing Activities |
(270)
|
(13)
|
| Net Cash Used in Financing Activities |
(692)
|
(298)
|
| Net Increase (Decrease) in Cash and Cash Equivalents |
103
|
(108)
|
| Cash and Cash Equivalents at Beginning of Period |
628
|
669
|
| Cash and Cash Equivalents at End of Period |
731
|
561
|
| CSX Corporation |
|
|
| Operating Activities |
|
|
| Net Cash Provided by (Used in) Operating Activities |
36
|
134
|
| Investing Activities |
|
|
| Property Additions |
0
|
0
|
| Purchase of Short-term Investments |
(235)
|
(105)
|
| Proceeds from Sales of Short-term Investments |
670
|
105
|
| Other Investing Activities |
(1)
|
0
|
| Net Cash Provided by (Used in) Investing Activities |
434
|
0
|
| Financing Activities |
|
|
| Dividends Paid |
(173)
|
(158)
|
| Shares Repurchased |
(249)
|
(127)
|
| Other Financing Activities |
1
|
4
|
| Net Cash Used in Financing Activities |
(421)
|
(281)
|
| Net Increase (Decrease) in Cash and Cash Equivalents |
49
|
(147)
|
| Cash and Cash Equivalents at Beginning of Period |
444
|
510
|
| Cash and Cash Equivalents at End of Period |
493
|
363
|
| CSX Transportation |
|
|
| Operating Activities |
|
|
| Net Cash Provided by (Used in) Operating Activities |
834
|
871
|
| Investing Activities |
|
|
| Property Additions |
(391)
|
(574)
|
| Purchase of Short-term Investments |
0
|
0
|
| Proceeds from Sales of Short-term Investments |
0
|
0
|
| Other Investing Activities |
26
|
(50)
|
| Net Cash Provided by (Used in) Investing Activities |
(365)
|
(624)
|
| Financing Activities |
|
|
| Dividends Paid |
(150)
|
(188)
|
| Shares Repurchased |
0
|
0
|
| Other Financing Activities |
(271)
|
(17)
|
| Net Cash Used in Financing Activities |
(421)
|
(205)
|
| Net Increase (Decrease) in Cash and Cash Equivalents |
48
|
42
|
| Cash and Cash Equivalents at Beginning of Period |
175
|
100
|
| Cash and Cash Equivalents at End of Period |
223
|
142
|
| Eliminations and Other |
|
|
| Operating Activities |
|
|
| Net Cash Provided by (Used in) Operating Activities |
(116)
|
(315)
|
| Investing Activities |
|
|
| Property Additions |
(34)
|
(24)
|
| Purchase of Short-term Investments |
0
|
0
|
| Proceeds from Sales of Short-term Investments |
0
|
35
|
| Other Investing Activities |
6
|
113
|
| Net Cash Provided by (Used in) Investing Activities |
(28)
|
124
|
| Financing Activities |
|
|
| Dividends Paid |
150
|
188
|
| Shares Repurchased |
0
|
0
|
| Other Financing Activities |
0
|
0
|
| Net Cash Used in Financing Activities |
150
|
188
|
| Net Increase (Decrease) in Cash and Cash Equivalents |
6
|
(3)
|
| Cash and Cash Equivalents at Beginning of Period |
9
|
59
|
| Cash and Cash Equivalents at End of Period |
$ 15
|
$ 56
|