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Asset Retirement Obligation (Tables)
 12 Months Ended
Dec. 31, 2018
ASSET RETIREMENT OBLIGATIONS [Abstract]  
Schedule of Change in Asset Retirement Obligation [Table Text Block]
The activity in our asset retirement obligation liability for 2018 and 2017 is summarized in the following table. These are included in “Other long-term liabilities” in the Consolidated Balance Sheets. Our asset retirement obligation reflects the estimated present value of its obligations for capping, closure and post closure costs with respect to landfills we own or operate and other on-going environmental monitoring costs.
 
Dollar amounts in millions
Year ended December 31,
2018
 
2017
Beginning balance
$
10.8

 
$
10.2

Accretion expense
0.9

 
0.8

Adjusted to expense during the year
1.6

 
—

Adjusted to other operating credits and charges, net
(0.8
)
 
—

Payments made
(0.4
)
 
(0.3
)
Translation
(0.1
)
 
0.1

Ending balance
$
12.0

 
$
10.8