Employee separation and plant phaseout costs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Sep. 30, 2012
Restructuring and Related Activities [Abstract]
Other Restructuring Costs	$ 1.3
Restructuring Charges	$ 10.5

The charge against earnings in the period, comprised of costs associated with restructuring activities not otherwise specified in the taxonomy pursuant to a duly authorized plan, excluding a discontinued operation as defined by generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, but excludes costs associated with the retirement of a long-lived asset and severance costs associated with established compensation plans.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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