OTHER INTANGIBLE ASSETS, NET: (Tables)

3 Months Ended

Mar. 31, 2013

OTHER INTANGIBLE ASSETS, NET:

Components of other intangible assets, net

	As of March 31, 2013							As of December 31, 2012
	Gross							Gross
	Carrying		Accumulated					Carrying		Accumulated
($ in millions)	Amount		Amortization			Net		Amount		Amortization			Net
Patents and other intellectual property	$	362.0	$	(208.0	)	$	154.0	$	370.3	$	(206.2	)	$	164.1
Trade names and trademarks	112.0		(44.6		)	67.4		115.0		(44.4		)	70.6
Customer relationships	332.2		(178.0		)	154.2		338.6		(175.0		)	163.6
Supply agreements	58.9		(31.0		)	27.9		59.9		(30.1		)	29.8
Other	60.9		(45.0		)	15.9		62.1		(44.4		)	17.7
Total	$	926.0	$	(506.6	)	$	419.4	$	945.9	$	(500.1	)	$	445.8

Schedule of estimated amortization expense for each of the five succeeding fiscal years

($ in millions)	Amortization
Year ending	Expense
2013	$	70.7
2014	62.9
2015	55.7
2016	51.3
2017	43.7