Summarized Consolidating Income Statement (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2011	Jun. 25, 2010	Jul. 01, 2011	Jun. 25, 2010
Consolidated Income Statement
Revenue	$ 3,019	$ 2,663	$ 5,829	$ 5,154
Operating Expenses	2,093	1,895	4,130	3,754
Operating Income	926	768	1,699	1,400
Equity in Earnings of Subsidiaries	0	0	0	0
Interest (Expense) / Benefit	(134)	(135)	(274)	(277)
Other Income - Net	0	9	5	20
Earnings Before Income Taxes	792	642	1,430	1,143
Income Tax Expense	(286)	(228)	(529)	(424)
Net Earnings	506	414	901	719
CSX Corporation
Consolidated Income Statement
Revenue	0	0	0	0
Operating Expenses	(67)	(46)	(133)	(83)
Operating Income	67	46	133	83
Equity in Earnings of Subsidiaries	540	492	972	889
Interest (Expense) / Benefit	(121)	(122)	(247)	(248)
Other Income - Net	4	4	8	10
Earnings Before Income Taxes	490	420	866	734
Income Tax Expense	16	(6)	35	(15)
Net Earnings	506	414	901	719
CSX Transportation
Consolidated Income Statement
Revenue	3,003	2,337	5,797	4,489
Operating Expenses	2,222	1,672	4,364	3,279
Operating Income	781	665	1,433	1,210
Equity in Earnings of Subsidiaries	2	0	3	0
Interest (Expense) / Benefit	(22)	(27)	(45)	(55)
Other Income - Net	0	20	2	38
Earnings Before Income Taxes	761	658	1,393	1,193
Income Tax Expense	(275)	(236)	(516)	(445)
Net Earnings	486	422	877	748
Eliminations
Consolidated Income Statement
Revenue	16	326	32	665
Operating Expenses	(62)	269	(101)	558
Operating Income	78	57	133	107
Equity in Earnings of Subsidiaries	(542)	(492)	(975)	(889)
Interest (Expense) / Benefit	9	14	18	26
Other Income - Net	(4)	(15)	(5)	(28)
Earnings Before Income Taxes	(459)	(436)	(829)	(784)
Income Tax Expense	(27)	14	(48)	36
Net Earnings	$ (486)	$ (422)	$ (877)	$ (748)