Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2018

Property and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property and equipment, net (in millions), and the corresponding ranges of estimated useful lives were as follows:

							2018
	December 31, 2018			December 31, 2017			Range of Estimated Useful Life
Land for transportation purposes	$	6,218		$	6,088		—
Track structure	24,214			23,217			15 – 50 years
Other roadway	29,077			28,103			9 – 100 years
Locomotives	8,660			8,528			8 – 36 years
Freight cars and other equipment	3,100			2,940			8 – 41 years
Computer hardware, software and other	1,256			1,075			6 – 15 years
Construction in progress	664			989			—
Total cost	73,189			70,940
Less accumulated depreciation and amortization	(10,004		)	(8,627		)
Property and equipment, net	$	63,185		$	62,313