Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies Capital and Operating Leases (Details)

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Commitments and Contingencies Capital and Operating Leases (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
Capital leases due in next twelve months $ 4
Capital leases due in the second fiscal year following the latest fiscal year 5
Capital leases due in the third fiscal year following the latest fiscal year 5
Capital leases due in the fourth fiscal year following the latest fiscal year 5
Capital leases due in the fifth fiscal year following the latest fiscal year 5
Capital leases due thereafter 110
Total minimum lease payments - Capital leases 134
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]  
Operating leases due in next twelve months 131
Operating leases due in the second fiscal year following the latest fiscal year 113
Operating leases due in the third fiscal year following the latest fiscal year 58
Operating leases due in the fourth fiscal year following the latest fiscal year 41
Operating leases due in the fifth fiscal year following the latest fiscal year 32
Operating leases due thereafter 69
Operating leases total minimum lease payments 444
Total Capital and Operating Leases, Future Minimum Payments Due [Abstract]  
Total due in next twelve months 135
Total due in the second fiscal year following the latest fiscal year 118
Total due in the third fiscal year following the latest fiscal year 63
Total due in the fourth fiscal year following the latest fiscal year 46
Total due in the fifth fiscal year following the latest fiscal year 37
Total due thereafter 179
Total minimum lease payments 578
Deduct: Amounts representing interest - Capital leases 74
Present value of minimum lease payments - Capital leases 60
Deduct: Current portion of capital lease obligations 0
Long-term portion of capital lease obligations $ 60