Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

The changes in the carrying amount of goodwill by segment were as follows:



(amounts in millions)	Performance Solutions			Agricultural Solutions			Total
Balance, December 31, 2014	$	961.2		$	444.1		$	1,405.3
Addition from acquisitions	1,258.3			1,697.1			2,955.4
Purchase accounting adjustments	—			80.2			80.2
Foreign currency translation	(72.3		)	(346.7		)	(419.0		)
Balance, December 31, 2015	2,147.2			1,874.7			4,021.9
Addition from acquisitions	66.9			—			66.9
Purchase accounting adjustments	29.7			—			29.7
Impairment write-off	(46.6		)	—			(46.6		)
Foreign currency translation	(64.8		)	156.7			91.9
Other	—			15.1			15.1
Balance, December 31, 2016 ^(*)	$	2,132.4		$	2,046.5		$	4,178.9

^(*) Includes accumulated impairment losses totaling $46.6 million associated with the Company's Performance Solutions segment.

Intangible assets subject to amortization were as follows:



		December 31, 2016							December 31, 2015
(amounts in millions)	Weighted average useful life (years)	Gross Carrying Amount		Accumulated Amortization and Foreign Exchange			Net Book Value		Gross Carrying Amount		Accumulated Amortization and Foreign Exchange			Net Book Value
Customer lists	18.0	$	1,245.9	$	(174.5	)	$	1,071.4	$	1,297.2	$	(184.0	)	$	1,113.2
Developed technology ⁽¹⁾	11.6	2,022.1		(254.9		)	1,767.2		2,260.9		(440.4		)	1,820.5
Tradenames	7.7	25.1		(8.2		)	16.9		24.2		(5.4		)	18.8
Non-compete agreement	5.0	1.9		(1.1		)	0.8		1.9		(0.5		)	1.4
Total	14.0	$	3,295.0	$	(438.7	)	$	2,856.3	$	3,584.2	$	(630.3	)	$	2,953.9

⁽¹⁾ Includes in-process registration rights awaiting completion before amortization commences.

Estimated future amortization of intangible assets for each of the next five fiscal years is as follows: