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Marketable Securities (Tables)

9 Months Ended

Mar. 31, 2013

Summary of marketable securities classified as available-for-sale

March 31, 2013			Unrealized			Estimated
($ in millions)	Cost		Losses			Fair Value

Non-current
Municipal auction rate securities	$	6.0	$	(0.5	)	$	5.5

June 30, 2012			Unrealized			Estimated
($ in millions)	Cost		Losses			Fair Value

Non-current
Municipal auction rate securities	$	6.0	$	(1.0	)	$	5.0

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

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+ Details