Income Taxes	3 Months Ended
Dec. 31, 2012
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes At the end of each interim period, we estimate a base effective tax rate that we expect for the full fiscal year based on our most recent forecast of pre-tax income, permanent book and tax differences and global tax planning strategies. We use this base rate to provide for income taxes on a year-to-date basis, excluding the effect of significant unusual or extraordinary items and items that are reported net of their related tax effects. We record the tax effect of significant unusual or extraordinary items and items that are reported net of their tax effects in the period in which they occur. The effective tax rate for the three months ended December 31, 2012 was 25.7 percent. The effective rate was lower than the U.S. statutory rate of 35 percent primarily because we benefited from lower non-U.S. tax rates. The amount of gross unrecognized tax benefits was $70.0 million ($23.0 million net of offsetting tax benefits) at December 31, 2012 and $70.3 million ($23.3 million net of offsetting tax benefits) September 30, 2012. These unrecognized tax benefits would reduce our effective tax rate if recognized. Offsetting tax benefits primarily consist of tax receivables that were recorded in other assets and foreign tax credit items that were recorded in deferred income taxes. There was no material change in the amount of unrecognized tax benefits in the first three months of 2013. We believe it is reasonably possible that the amount of unrecognized tax benefits could be reduced by up to $1.2 million and the amount of offsetting tax benefits could be reduced by up to $0.8 million during the next 12 months as a result of the resolution of worldwide tax matters and the lapses of statutes of limitations. We recognize interest and penalties related to tax matters in tax expense. Accrued interest and penalties were $20.6 million and $20.1 million at December 31, 2012 and at September 30, 2012, respectively. We conduct business globally and are routinely audited by the various tax jurisdictions in which we operate. We are no longer subject to U.S. federal income tax examinations for years before 2009 and are no longer subject to state, local and foreign income tax examinations for years before 2003.

Income Taxes

3 Months Ended

Dec. 31, 2012

At the end of each interim period, we estimate a base effective tax rate that we expect for the full fiscal year based on our most recent forecast of pre-tax income, permanent book and tax differences and global tax planning strategies. We use this base rate to provide for income taxes on a year-to-date basis, excluding the effect of significant unusual or extraordinary items and items that are reported net of their related tax effects. We record the tax effect of significant unusual or extraordinary items and items that are reported net of their tax effects in the period in which they occur.

The effective tax rate for the three months ended December 31, 2012 was 25.7 percent. The effective rate was lower than the U.S. statutory rate of 35 percent primarily because we benefited from lower non-U.S. tax rates.

The amount of gross unrecognized tax benefits was $70.0 million ($23.0 million net of offsetting tax benefits) at December 31, 2012 and $70.3 million ($23.3 million net of offsetting tax benefits) September 30, 2012. These unrecognized tax benefits would reduce our effective tax rate if recognized. Offsetting tax benefits primarily consist of tax receivables that were recorded in other assets and foreign tax credit items that were recorded in deferred income taxes.

There was no material change in the amount of unrecognized tax benefits in the first three months of 2013. We believe it is reasonably possible that the amount of unrecognized tax benefits could be reduced by up to $1.2 million and the amount of offsetting tax benefits could be reduced by up to $0.8 million during the next 12 months as a result of the resolution of worldwide tax matters and the lapses of statutes of limitations.

We recognize interest and penalties related to tax matters in tax expense. Accrued interest and penalties were $20.6 million and $20.1 million at December 31, 2012 and at September 30, 2012, respectively.

We conduct business globally and are routinely audited by the various tax jurisdictions in which we operate. We are no longer subject to U.S. federal income tax examinations for years before 2009 and are no longer subject to state, local and foreign income tax examinations for years before 2003.