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Asset Retirement Obligations
 12 Months Ended
Dec. 31, 2016
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations

NOTE 10—ASSET RETIREMENT OBLIGATIONS

The following table presents activity for asset retirement obligations for the years ended December 31, 2016 and 2015:

 

 

Year Ended December 31,

 

(In millions)

2016

 

 

2015

 

Balance, beginning of period

$

5.0

 

 

$

—

 

Obligations assumed in business combination

 

—

 

 

 

6.5

 

Revisions and liabilities incurred

 

0.2

 

 

 

(1.0

)

Accretion expense

 

0.4

 

 

 

0.4

 

Payments

 

(0.3

)

 

 

(0.9

)

Balance, end of period

$

5.3

 

 

$

5.0

 

 

Of the total asset retirement obligations as of December 31, 2016 and 2015, $0.9 million and $0.9 million, respectively, is classified as accrued liabilities, with the remaining $4.4 million and $4.1 million, respectively, classified as other noncurrent liabilities in the consolidated balance sheets.