Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings per Share

The following table sets forth the computation of basic earnings per share and earnings per share, assuming dilution:

	Fiscal Years
	2017			2016			2015
Numerator (Dollars in Millions):
Net Earnings	$	5,471		$	1,714		$	1,968
Dividend Equivalents on Restricted Stock	(1		)	(1		)	(1		)
Net Earnings, Attributable to Common Shareholders	$	5,470		$	1,713		$	1,967
Denominator (Units in Millions):
Average Common Shares Outstanding	911			947			983
Other Potentially Dilutive Common Shares	3			1			1
Average Common Shares Outstanding, Assuming Dilution	914			948			984
Net Earnings Per Share, Basic	$	6.01		$	1.81		$	2.00
Net Earnings Per Share, Assuming Dilution	$	5.99		$	1.81		$	2.00

Schedule of Share Repurchases

During 2017, 2016, and 2015, CSX repurchased the following shares:

	Fiscal Years
	2017		2016		2015
Shares Repurchased (Units in Millions)	39		38		26
Cost of Shares (Dollars in Millions)	$	1,970	$	1,056	$	804