Fair Value Measurements and Disclosures (Details 3) - USD ($) $ in Millions		Jun. 30, 2015	Jun. 30, 2014
Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt, Fair Value	[1]	$ 5,759	$ 5,758
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt, Fair Value	[1]	$ 6,103	$ 6,179

[1] Excludes capital lease obligations.