Acquisitions and Divestitures - Divestitures (Details 1) - MEXICO $ in Millions	3 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Jun. 30, 2016 payment	Sep. 13, 2011 payment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal group, number of installment payments (in payments) | payment				3
First Installment received from the sale of land in Mexico | $		$ 24
Second Installment received from the sale of land in Mexico | $	$ 36
Disposal group, number of installment payments received to date (in payments) | payment			2