XML 55 R38.htm IDEA: XBRL DOCUMENT v3.20.4
Regulatory Matters, Commitments, Contingencies And Environmental Liabilities Regulatory Matters, Commitments, Contingencies And Environmental Liabilities (Tables)
12 Months Ended
Dec. 31, 2020
Environmental Exit Costs by Cost [Table Text Block] The table below reflects the amounts of accrued liabilities recorded in our consolidated balance sheets related to environmental matters that are considered to be probable and reasonably estimable. Currently, we are not able to estimate
possible losses or a range of possible losses in excess of amounts accrued. Except for matters discussed above, we do not have any material environmental matters assessed as reasonably possible that would require disclosure in our consolidated financial statements.
December 31,
 20202019
Current$44 $46 
Non-current262 274 
Total environmental liabilities$306 $320 
Right Of Way [Member]  
Lessee, Operating Lease, Disclosure [Table Text Block]
We have certain non-cancelable rights-of-way (“ROW”) commitments, which require fixed payments and either expire upon our chosen abandonment or at various dates in the future. The table below reflects ROW expense included in operating expenses in the accompanying statements of operations:
Years Ended December 31,
202020192018
ROW expense
$47 $45 $46