Prepaid Expenses, Supplies, Other Assets And Accrued And Other Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Additional Other Assets And Liabilities Disclosure [Abstract]

Schedule of Prepaid Expenses, Supplies, Other Assets and Accrued and Other Liabilities

The following tables provide details of prepaid expenses, other assets, accrued liabilities and other noncurrent liabilities within continuing operations as of December 31, 2016 and 2015:

Prepaid Expenses, Supplies and Other Current Assets

	December 31,
(In millions)	2017		2016
Prepaid expenses	$	17.4	$	8.6
Inventory supplies		12.6		11.8
Taxes receivable		1.9		2.4
Restricted cash and restricted cash equivalents		0.7		1.0
Derivative assets		—		0.6
Other		1.3		0.2
Total prepaid expenses, supplies and other current assets	$	33.9	$	24.6

Other Noncurrent Assets

	December 31,
(In millions)	2017		2016
Loans receivable, net	$	0.7	$	0.8
Utility and other deposits		4.9		4.4
Restricted cash and restricted cash equivalents		7.2		4.5
Other		—		0.1
Total other noncurrent assets	$	12.8	$	9.8

Accrued Liabilities

	December 31,
(In millions)	2017		2016
Employee-related costs	$	8.8	$	11.2
Accrued interest(1)		0.8		14.1
Toll liability		9.8		6.7
Taxes payable		2.7		5.3
Environmental liabilities		3.3		4.0
Asset retirement obligations		0.2		0.9
Derivative liabilities		—		0.4
Other		2.5		3.8
Total accrued liabilities	$	28.1	$	46.4

Other Noncurrent Liabilities

	December 31,
(In millions)	2017		2016
Asset retirement obligations	$	5.6	$	4.4
Other		1.8		2.5
Total other noncurrent liabilities	$	7.4	$	6.9