SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2015

SIGNIFICANT ACCOUNTING POLICIES

Schedule of fair value measurement

					Quoted Prices in		Significant		Significant
	Total				Active Markets		Observable		Unobservable
	Carrying Value		Total		(Level 1)		Inputs (Level 2)		Inputs (Level 3)
	December 31, 2015		Fair Value Measurements at December 31, 2015
Cash and cash equivalents	$	25.5	$	25.5	$	25.5	$	—	$	—
Accounts receivable, net	214.3		214.3		—		214.3		—
Fixed rate debt	429.9		443.8		—		443.8		—

	December 31, 2014		Fair Value Measurements at December 31, 2014
Cash and cash equivalents	$	293.4	$	293.4	$	293.4	$	—	$	—
Accounts receivable, net	197.6		197.6		—		197.6		—
Fixed rate debt	373.6		395.7		—		395.7		—

Schedule of changes in the allowance for doubtful accounts receivable

Year	Balance at Beginning of Year		Expense (1)		Write-offs  and Other			Balance at End of Year
2015	$	5.0	$	2.0	$	(0.4	)	$	6.6
2014	4.1		1.8		(0.9		)	5.0
2013	4.7		0.6		(1.2		)	4.1

(1) 2015 expense includes allowances for Alaska service related accounts receivable.

Schedule of prepaid expenses and other assets

	As of December 31,
Prepaid expenses and other assets	2015		2014
Prepaid fuel	$	9.3	$	11.0
Insurance	4.9		2.9
Income tax receivables	15.1		—
Other	8.8		6.6
Total	$	38.1	$	20.5

Schedule of estimated useful lives of property and equipment

Classification	Life
Vessels	40 years
Machinery and equipment	20 years
Terminal facilities	35 years

Schedule of accrued and other liabilities

	As of December 31,
Accrued and other liabilities	2015		2014
Incentives and other benefit accruals	$	20.7	$	16.1
Molasses tank farm removal accrual	7.4		—
Restructuring and severance accruals	5.0		—
Repayments of multi-employer withdrawal liability (see Note 12)	4.1		—
Interest on debt	3.9		3.3
Acquisition related payments	3.8		—
Deferred revenue	3.6		2.4
Post retirement benefit obligations	2.5		2.5
Other liabilities	9.5		2.6
Total	$	60.5	$	26.9

Schedule of changes in accumulated other comprehensive income (loss) by component, net of tax

	Pensions			Post Retirement			Non- Qualified Plans			Foreign Currency Translation			Interest Hedge			Accumulated  Other Comprehensive Income (Loss)
Balance at December 31, 2013	$	(20.1	)	$	(1.7	)	$	(0.9	)	$	(0.1	)	$	(0.7	)	$	(23.5	)
Net loss in prior service costs	(25.4		)	(5.9		)	(0.1		)	—			—			(31.4		)
Amortization of prior service cost	(1.3		)	—			—			—			—			(1.3		)
Amortization of net loss	1.8			0.4			0.3			—			—			2.5
Foreign currency translation adjustment	—			—			—			0.4			—			0.4
Balance at December 31, 2014	(45.0		)	(7.2		)	(0.7		)	0.3			(0.7		)	(53.3		)
Net gain in prior service costs	3.7			1.4			—			—			—			5.1
Amortization of prior service cost	(1.3		)	0.1			(0.1		)	—			—			(1.3		)
Amortization of net loss	0.9			1.0			(0.1		)	—			—			1.8
Foreign currency translation adjustment	—			—			—			0.7			—			0.7
Other	—			—			—			—			0.1			0.1
Balance at December 31, 2015	$	(41.7	)	$	(4.7	)	$	(0.9	)	$	1.0		$	(0.6	)	$	(46.9	)

Schedule of basic and diluted earnings per share

	Year Ended December 31, 2015					Year Ended December 31, 2014					Year Ended December 31, 2013
			Weighted	Per				Weighted	Per				Weighted	Per
			Average	Common				Average	Common				Average	Common
	Net		Common	Share		Net		Common	Share		Net		Common	Share
	Income		Shares	Amount		Income		Shares	Amount		Income		Shares	Amount
Basic:	$	103.0	43.5	$	2.37	$	70.8	43.0	$	1.65	$	53.7	42.7	$	1.26
Effect of Dilutive Securities:			0.5	—				0.4	—				0.4	—
Diluted:	$	103.0	44.0	$	2.34	$	70.8	43.4	$	1.63	$	53.7	43.1	$	1.25