Fair Value Measurement Disclosures (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Estimated Fair Values of Financial Instruments

The estimated fair values of our financial instruments are as follows (in millions):

		March 31, 2019				December 31, 2018
	Fair Value	Carrying		Fair		Carrying		Fair
Description	Hierarchy	Amount		Value		Amount		Value
12.5% Senior Secured Notes due 2017 (note 10)	Level 2	$	249.9		262.2	$	249.9		258.6
10 3/4% Series B cumulative exchangeable      redeemable preferred stock (note 11)	Level 3		177.7		45.4		175.3		37.8