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Other Income
12 Months Ended
Dec. 31, 2020
Other Income [Abstract]  
Other Income 6. Other Income

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

Millions

2020

2019

2018

Rental income

$

123 

$

124 

$

122 

Net gain on non-operating asset dispositions [a]

115 

20 

30 

Net periodic pension and OPEB costs

44 

37 

13 

Interest income

12 

32 

30 

Interest income on employment tax refund

-

31 

-

Early extinguishment of debt

-

(2)

(85)

Non-operating environmental costs and other

(7)

1 

(16)

Total

$

287 

$

243 

$

94 

[a]2020 includes a $69 million gain from a land and permanent easement sale to the Illinois State Toll Highway Authority.