Acquisitions and divestitures (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Significant Acquisitions and Disposals [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			$ 620,647,000	$ 31,004,000
Revenue, Net	3,307,041,000	3,393,563,000	9,587,471,000	9,734,276,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal			17,000,000
Business Divestitures [Member]
Significant Acquisitions and Disposals [Line Items]
Revenue, Net			158,000,000
Series of Individually Immaterial Business Acquisitions [Member]
Significant Acquisitions and Disposals [Line Items]
Number of Businesses Acquired			8
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period			484,000,000
Payments to Acquire Businesses, Net of Cash Acquired			621,000,000
Noncash or Part Noncash Acquisition, Debt Assumed			$ 114,000,000