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Property and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2024
Property and Equipment [Abstract]  
Property and Equipment, net
Property and equipment, net (in millions), and the corresponding ranges of estimated useful lives were as follows:
 December 31,
2024
December 31,
2023
Range of
Estimated
Useful Life
Land for transportation purposes$7,108 $7,068 — 
Track structure32,047 30,366 15 – 55 years
Other roadway a
34,938 34,257 10 – 100 years
Locomotives9,995 10,627 8 – 38 years
Freight cars and other equipment3,983 3,927 8 – 45 years
Computer hardware, software and other1,788 1,703 6 – 15 years
Construction in progress1,813 1,715 — 
      Total cost91,672 89,663  
Less accumulated depreciation and amortization(20,411)(19,464) 
      Property and equipment, net$71,261 $70,199  
a  Other roadway includes grading, bridges, signals, buildings and other road assets.