XML 48 R34.htm IDEA: XBRL DOCUMENT v3.22.0.1
Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2021
Related Party Transactions [Abstract]  
Schedule of Related Party Transactions The following table summarizes revenues earned by BNSF for services provided to related parties and expenditures to related parties (in millions):
Years ended December 31,
 202120202019
Revenues$106 $119 $158 
Expenditures$385 $367 $386