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Share-Based Compensation and Postretirement Benefits Postretirement Benefits (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
|---|---|---|
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Sep. 30, 2014
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Sep. 30, 2013
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Pension Plan [Member]
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | ||
| Defined Benefit Plan, Net Periodic Benefit Cost | $ 117 | $ 104 |
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Other Postretirement Benefit Plan [Member]
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | ||
| Defined Benefit Plan, Net Periodic Benefit Cost | $ 4 | $ 13 |