Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2012

Gross Cost and Accumulated Amortization of Intangible Assets

The gross cost and accumulated amortization of intangible assets, by major intangible asset category, were as follows:

	Successor
	September 30, 2012
	Gross        Cost		Accumulated Amortization			Net Carrying Amount
Customer relationships	$	293.9	$	(33.8	)	$	260.1
TiO2 technology		31.9		(2.7	)		29.2
Internal-use software		17.4		(0.9	)		16.5
In-process research and development		5.0		(1.7	)		3.3
Trade names		3.6		(1.2	)		2.4
Other		0.6		(0.1	)		0.5
Total	$	352.4	$	(40.4	)	$	312.0
	Successor
	December 31, 2011
	Gross Cost		Accumulated Amortization			Net Carrying Amount
Customer relationships	$	293.9	$	(18.6	)	$	275.3
TiO2 technology		31.9		(1.5	)		30.4
Internal-use software		11.8		—			11.8
In-process research and development		5.0		(0.9	)		4.1
Trade names		3.6		(0.7	)		2.9
Other		0.7		(0.1	)		0.6
Total	$	346.9	$	(21.8	)	$	325.1

Estimated Future Amortization Expense Related to Intangible Assets

Estimated future amortization expense related to intangible assets is as follows:

	Total Amortization
2012	$	6.3
2013		25.4
2014		24.6
2015		24.6
2016		23.0
Thereafter		208.1
Total	$	312.0