Other Assets

Other assets are summarized as follows:



	December 31, 2013			December 31, 2012
Intangible assets
Patents	$	1.9		$	2.0
Favorable leasehold interests	6.3			9.7
Customer relationships	28.7			28.1
Total intangible assets	36.9			39.8
Less: Accumulated amortization-patents	(1.3		)	(1.2		)
Accumulated amortization-favorable leasehold interest	(3.1		)	(4.8		)
Accumulated amortization-customer relationships	(27.8		)	(23.7		)
Intangible assets, net	4.7			10.1
Deferred financing
Deferred financing costs	80.5			76.4
Less: Accumulated amortization-deferred financing costs	(56.3		)	(49.6		)
Deferred financing costs, net	24.2			26.8
Other
Fair value of derivative instruments	—			—
Goodwill — Europe	3.0			3.0
Equity in net assets of affiliates	1.4			5.1
Customer supply agreement⁽¹⁾	37.6			39.9
Other	36.2			6.1
Total	$	107.1		$	91.0

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(1)	Under an agreement with our customer Airbus, certain payments accounted for as consideration given by the Company to Airbus are being amortized as a reduction to net revenues.

The Company recognized $5.4, $4.1 and $4.1 of amortization expense of intangibles for the twelve months ended December 31, 2013, December 31, 2012 and December 31, 2011, respectively.

Estimated amortization expense associated with the Company's amortizable intangible assets for each of the next five years is as follows:



2014	$	1.4
2015	$	0.5
2016	$	0.5
2017	$	0.5
2018	$	0.4

The following is a roll forward of the carrying amount of goodwill at December 31, 2013 and December 31, 2012:



	2013		2012
Balance, January 1	$	3.0	$	2.9
Goodwill acquired	—		—
Exchange rate	—		0.1
Balance, December 31	$	3.0	$	3.0