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Note 3 - Operations and Segmentation - Summary of Freight and Other Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue from Contract with Customer, Excluding Assessed Tax	$ 6,566	$ 5,566	$ 18,695	$ 16,071
Bulk [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,959	1,687	5,604	4,847
Industrial [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,194	1,911	6,206	5,426
Premium [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,956	1,568	5,581	4,674
Cargo and Freight [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	6,109	5,166	17,391	14,947
Other Subsidiary Revenues [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	231	182	669	539
Accessorial Revenues [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	212	198	596	535
Other Miscellaneous Product and Service Revenues [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 14	$ 20	$ 39	$ 50

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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