Income Taxes	6 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	NCOME TAXES Our consolidated effective income tax rate for the three and six months ended March 31, 2015 was approximately 9% and 11%, respectively, as compared to 25% and 18% for the three and six months ended March 31, 2014. The effective tax rate for the three and six months ended March 31, 2015 was lower than the rate for the three and six months ended March 31, 2014 primarily due to discrete items recognized during the period ended March 31, 2014 related to the sale of the Atwood Vicksburg. Our effective tax rate was lower than the U.S. statutory rate of 35% as a result of working in certain lower tax jurisdictions outside the United States. We record estimated accrued interest and penalties related to uncertain tax positions as income tax expense. At March 31, 2015, we had approximately $14.8 million of reserves for uncertain tax positions, including estimated accrued interest and penalties of $3.5 million, which are included in Other long-term liabilities in the Consolidated Balance Sheet. None of our reserves for uncertain tax positions relate to timing differences. All $14.8 million of the net uncertain tax liabilities would affect the effective tax rate if realized.

Income Taxes

6 Months Ended

Mar. 31, 2015

NCOME TAXES

Our consolidated effective income tax rate for the three and six months ended March 31, 2015 was approximately 9% and 11%, respectively, as compared to 25% and 18% for the three and six months ended March 31, 2014. The effective tax rate for the three and six months ended March 31, 2015 was lower than the rate for the three and six months ended March 31, 2014 primarily due to discrete items recognized during the period ended March 31, 2014 related to the sale of the Atwood Vicksburg. Our effective tax rate was lower than the U.S. statutory rate of 35% as a result of working in certain lower tax jurisdictions outside the United States. We record estimated accrued interest and penalties related to uncertain tax positions as income tax expense. At March 31, 2015, we had approximately $14.8 million of reserves for uncertain tax positions, including estimated accrued interest and penalties of $3.5 million, which are included in Other long-term liabilities in the Consolidated Balance Sheet. None of our reserves for uncertain tax positions relate to timing differences. All $14.8 million of the net uncertain tax liabilities would affect the effective tax rate if realized.