Supplementary Cash Flow Information (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2016

Dec. 31, 2015

Supplemental Cash Flow Information [Abstract]

Schedule of cash flow, supplemental disclosures

Net cash paid (received) during the period for interest, net of capitalized interest, and income taxes are presented below:

	Three Months Ended March 31,
	2016			2015
Net cash paid (received) during the period for:
Interest, net of capitalized interest	$	4.8		$	5.1
Income taxes	(3.4		)	—

Net cash paid (received) during the period for interest, net of capitalized interest, and income taxes are presented below:

	2015		2014			2013
Net cash paid (received) during the period for:
Interest, net of capitalized interest	$	161.3	$	121.9		$	116.2
Income taxes	0.7		(0.3		)	1.2

Schedule of non-cash investing and financing activities

Non-cash investing and financing activities are presented below:

	Three Months Ended March 31,
	2016		2015
Capital investments	$	24.5	$	18.1
Research and Innovation Center capital lease	9.6		—
Issuance of restricted stock and restricted stock units	1.4		3.4

Non-cash investing and financing activities for the years ended December 31, 2015, 2014 and 2013, are presented below:

	2015		2014		2013
Capital investments	$	37.4	$	29.5	$	10.2
Issuance of restricted stock and restricted stock units	4.1		4.5		3.0