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Note 1 - Nature of Operations (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

Millions		2021				2020				2019
Bulk		$	6,656			$	5,960			$	6,529
Industrial			7,323				6,622				7,472
Premium			6,265				5,669				6,242
Total freight revenues		$	20,244			$	18,251			$	20,243
Other subsidiary revenues			741				743				880
Accessorial revenues			752				473				514
Other			67				66				71
Total operating revenues		$	21,804			$	19,533			$	21,708

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045

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- References

No definition available.

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