Other Income

9 Months Ended

Sep. 30, 2021

Other Income [Abstract]

Other Income

6. Other Income

Other income included the following:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
Millions	2021		2020		2021		2020
Rental income	$	36	$	29	$	103	$	90
Gain on non-operating asset dispositions [a]		12		3		84		97
Net periodic pension and OPEB costs		8		12		21		31
Unrealized gain/(loss) on fair value of investments (Note 13)		(12)		-		8		-
Interest income		2		2		4		11
Non-operating environmental costs and other		(8)		(9)		(6)		(8)
Total	$	38	$	37	$	214	$	221

[a]2021 includes a $50 million gain from a sale to the Colorado Department of Transportation. 2020 includes a $69 million gain from a land and permanent easement sale to the Illinois State Toll Highway Authority.