Basis Of Presentation And Recently Issued Accounting Pronouncements	3 Months Ended
Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation And Recently Issued Accounting Pronouncements	In the opinion of management, the accompanying unaudited consolidated financial statements include all adjustments necessary for a fair presentation of operating results for the interim periods presented. Adjustments consist of normal and recurring accruals. The consolidated financial statements are presented in accordance with the requirements of Form 10-Q and consequently do not include all disclosures required for annual financial statements presented in conformity with U.S. generally accepted accounting principles (GAAP). For further information, refer to the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended September 30, 2013. The Company’s interim statements of cash flows previously reported capital expenditures as equipment was received, rather than when paid. The first quarter of 2013 has been adjusted by $85 million to reflect capital expenditures when payment is made, which had the effect of increasing investing cash flow and operating cash flow compared with amounts previously reported, while the fourth quarter of 2013 will be decreased by similar amounts. This revision was not considered material to the previously issued financial statements. Total investing cash flow and operating cash flow previously reported for the full fiscal year 2013 are not affected. Effective October 2013, the Company adopted updates to ASC 210, Balance Sheet, and to ASC 220, Comprehensive Income. ASC 210 requires entities to disclose both assets and liabilities related to derivatives subject to enforceable master netting arrangements, including collateral, and reconcile those amounts to the net amount presented in the balance sheet. ASC 220 requires entities to disclose reclassifications into earnings from accumulated other comprehensive income (AOCI) and other current period activity. There is no change to the items reported in AOCI or when those items should be reclassified into earnings. These updates did not materially impact the Company’s financial statements.

In the opinion of management, the accompanying unaudited consolidated financial statements include all adjustments necessary for a fair presentation of operating results for the interim periods presented. Adjustments consist of normal and recurring accruals. The consolidated financial statements are presented in accordance with the requirements of Form 10-Q and consequently do not include all disclosures required for annual financial statements presented in conformity with U.S. generally accepted accounting principles (GAAP). For further information, refer to the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended September 30, 2013.

The Company’s interim statements of cash flows previously reported capital expenditures as equipment was received, rather than when paid. The first quarter of 2013 has been adjusted by $85 million to reflect capital expenditures when payment is made, which had the effect of increasing investing cash flow and operating cash flow compared with amounts previously reported, while the fourth quarter of 2013 will be decreased by similar amounts. This revision was not considered material to the previously issued financial statements. Total investing cash flow and operating cash flow previously reported for the full fiscal year 2013 are not affected.

Effective October 2013, the Company adopted updates to ASC 210, Balance Sheet, and to ASC 220, Comprehensive Income. ASC 210 requires entities to disclose both assets and liabilities related to derivatives subject to enforceable master netting arrangements, including collateral, and reconcile those amounts to the net amount presented in the balance sheet. ASC 220 requires entities to disclose reclassifications into earnings from accumulated other comprehensive income (AOCI) and other current period activity. There is no change to the items reported in AOCI or when those items should be reclassified into earnings. These updates did not materially impact the Company’s financial statements.