SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of changes in the allowance for doubtful accounts receivable

Changes in the allowance for doubtful accounts receivable for the three years ended December 31, 2018, 2017 and 2016 were as follows:

	Balance at		Expense		Write-offs		Balance at
Year (in millions)	Beginning of Year		(Recovery) (1)		and Other		End of Year
2018	$	4.6	$	0.8	$	(0.6)	$	4.8
2017	$	4.2	$	1.0	$	(0.6)	$	4.6
2016	$	6.6	$	(0.3)	$	(2.1)	$	4.2

(1) Expense is shown net of amounts recovered from previously reserved doubtful accounts.

Schedule of prepaid expenses and other assets

Prepaid expenses and other assets consist of the following at December 31, 2018 and 2017:

	As of December 31,
Prepaid Expenses and Other Assets (in millions)	2018		2017
Income tax receivables	$	26.8	$	2.6
Prepaid fuel		16.3		14.4
Prepaid insurance and insurance related receivables		12.6		19.3
Prepaid operating expenses		6.8		6.3
Restricted cash - vessel construction obligations		4.9		—
Other		7.7		9.0
Total	$	75.1	$	51.6

Schedule of other long-term assets

Other long-term assets consist of the following at December 31, 2018 and 2017:

	As of December 31,
Other Long-Term Assets (in millions)	2018		2017
Income tax receivables	$	21.5	$	50.2
Vessel and equipment spare parts		13.1		12.7
Insurance related receivables		11.2		12.9
Deferred Charges and other		3.7		7.8
Capital construction fund - cash on deposit (see Note 7)		—		0.9
Total	$	49.5	$	84.5

Schedule of estimated useful lives of property and equipment

Classification	Life
Vessels	40 years
Machinery and equipment	30 years
Terminal facilities	35 years

Schedule of accrued and other liabilities

Accruals and other liabilities consist of the following at December 31, 2018 and 2017:

	As of December 31,
Accruals and Other Liabilities (in millions)	2018		2017
Payroll and vacation related accruals	$	25.7	$	24.7
Employee incentives and other related accruals		19.5		17.4
Uninsured risks and related liabilities - short term		9.9		15.4
Deferred revenues		5.7		5.0
Interest on debt		5.1		5.4
Multi-employer withdrawal liabilities - short term (see Note 12)		10.8		4.1
Pension and post-retirement liabilities - short term (see Note 11)		3.0		3.0
Other short-term liabilities		2.2		5.4
Total	$	81.9	$	80.4

Schedule of other long-term liabilities

Other long-term liabilities consist of the following at December 31, 2018 and 2017:

	As of December 31,
Other Long-Term Liabilities (in millions)	2018		2017
Pension and post-retirement liabilities (see Note 11)	$	79.4	$	75.1
Multi-employer withdrawal liability (see Note 12)		56.6		65.1
Uninsured risks and related liabilities		27.3		29.5
Other long-term liabilities		14.0		8.5
Total	$	177.3	$	178.2

Ocean Transportation

Schedule of principal revenue generating activities by segment

	Year Ended December 31,
Ocean Transportation (in millions) (1)	2018		2017		2016
Ocean Transportation services	$	1,599.3	$	1,531.8	$	1,504.5
Terminal and other related services		23.0		23.5		22.9
Fuel sales		12.2		9.9		7.5
Vessel management and related services		6.8		6.6		6.2
Total	$	1,641.3	$	1,571.8	$	1,541.1

(1) Ocean Transportation revenue transactions are primarily denominated in U.S. dollars except for less than 3 percent of Ocean Transportation services revenue and fuel sales revenue categories which are denominated in foreign currencies. 

Logistics

Schedule of principal revenue generating activities by segment

	Year Ended December 31,
Logistics (in millions) (1)	2018		2017		2016
Transportation Brokerage and Freight Forwarding services	$	549.1	$	445.1	$	373.7
Warehouse and distribution services		19.1		17.5		19.7
Supply chain management and other services		13.3		12.5		7.1
Total	$	581.5	$	475.1	$	400.5

(1) Logistics revenue transactions are primarily denominated in U.S. dollars except for less than 3 percent of transportation brokerage and freight forwarding services revenue, and supply chain management and other services revenue categories which are denominated in foreign currencies.