Goodwill and Identifiable Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

The following table provides information regarding changes in goodwill (in millions):



	Aviation Segment			Land Segment			Marine Segment			Total
As of December 31, 2015	$	173.7		$	430.7		$	71.4		$	675.8
2016 acquisitions	95.6			77.7			—			173.3
Adjustment of purchase price allocations	1.3			5.5			0.1			6.9
Foreign currency translation of non-USD functional currency subsidiary goodwill	(3.7		)	(17.3		)	0.7			(20.3		)
As of December 31, 2016	266.8			496.7			72.3			835.8
2017 acquisitions	51.2			12.2			—			63.5
Adjustment of purchase price allocations	6.2			(0.1		)	—			6.0
Impairment charge	—			—			(72.3		)	(72.3		)
Foreign currency translation of non-USD functional currency subsidiary goodwill	2.7			9.8			—			12.5
As of December 31, 2017	$	326.9		$	518.5		$	—		$	845.5

Schedule of identifiable intangible assets

The following table provides information about our identifiable intangible assets (in millions):



	As of December 31, 2017						As of December 31, 2016
	Gross Carrying Amount		Accumulated Amortization ⁽¹⁾		Net		Gross Carrying Amount		Accumulated Amortization ⁽¹⁾		Net
Intangible assets subject to amortization:
Customer relationships ⁽²⁾	$	373.8	$	171.4	$	202.4	$	353.8	$	155.5	$	198.3
Supplier agreements	38.7		15.4		23.4		38.7		13.3		25.4
Others	40.0		26.3		13.7		37.2		20.2		17.0
	452.5		213.1		239.4		429.7		189.1		240.7
Intangible assets not subject to amortization:
Trademark/trade name rights	40.3				40.3		41.7				41.7
	$	492.9	$	213.1	$	279.7	$	471.4	$	189.1	$	282.3

⁽¹⁾ Includes the impact of foreign exchange

⁽²⁾ Reflects recorded impairment charges for 2017 of $4.1 million and $3.0 million in our Marine and Land segments, respectively, which is presented in "Goodwill and other impairments" on our Consolidated Statement of Income.

Schedule of future estimated amortization of identifiable intangible assets

The future estimated amortization of our identifiable intangible assets is as follows (in millions):



Year Ended December 31,
2018	$	41.0
2019	34.5
2020	29.9
2021	26.6
2022	23.6
Thereafter	83.7
	$	239.4