v3.20.4
Supplemental Cash Flow Information (Tables)
12 Months Ended
Dec. 31, 2020
Supplemental Cash Flow Elements  
Supplemental Cash Flow Information

(Millions)

    

2020

    

2019

    

2018

 

Cash income tax payments, net of refunds

$

1,351

$

1,198

$

1,560

Cash interest payments

 

524

 

370

 

314