Other Income

12 Months Ended

Dec. 31, 2019

Other Income [Abstract]

Other Income

7. Other Income

Other income included the following for the years ended December 31:

Millions	2019		2018		2017
Rental income [a]	$	124	$	122	$	178
Net periodic pension and OPEB costs		37		13		(45)
Interest income		32		30		16
Interest income on employment tax refund		31		-		-
Net gain on non-operating asset dispositions [b]		20		30		111
Early extinguishment of debt [c]		(2)		(85)		-
Non-operating environmental costs and other		1		(16)		(15)
Total	$	243	$	94	$	245

[a]2017 includes $65 million related to a favorable litigation settlement in the third quarter.

[b]2017 includes $26 million and $57 million related to a real estate sale in the first quarter and in the third quarter, respectively.

[c]2019 includes a debt extinguishment charge for the early redemption of certain notes in the fourth quarter. 2018 includes a debt extinguishment charge for the early redemption of certain bonds and debentures in the first quarter (Note 15).