Income Taxes	6 Months Ended
Mar. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Our consolidated effective income tax rate for the three and six months ended March 31, 2014 was approximately 25% and 18%, respectively, as compared to 12% and 13% for the three and six months ended March 31, 2013, respectively. The effective tax rate for the three and six months ended March 31, 2014 was higher than the rate for the three and six months ended March 31, 2013 primarily due to tax expenditures relating to the income received on the sale of the Vicksburg as well as an increase to our reserve for uncertain tax provisions. 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, 2014, we had approximately $13.9 million of reserves for uncertain tax positions, including estimated accrued interest and penalties of $4.0 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 $13.9 million of the net uncertain tax liabilities would affect the effective tax rate if realized. Our United States tax returns for fiscal year 2010 and subsequent years remain subject to examination by tax authorities. As we conduct business globally, we have various tax years that remain open to examination in certain international tax jurisdictions, including tax returns in Australia for fiscal years 2008 through 2013 and tax returns in Equatorial Guinea for calendar years 2011 through 2013. Although we cannot predict the outcome of ongoing or future tax examinations, we do not anticipate that the ultimate resolution of these examinations will have a material impact on our consolidated financial position, results of operations or cash flows.

Income Taxes

6 Months Ended

Mar. 31, 2014

INCOME TAXES

Our consolidated effective income tax rate for the three and six months ended March 31, 2014 was approximately 25% and 18%, respectively, as compared to 12% and 13% for the three and six months ended March 31, 2013, respectively. The effective tax rate for the three and six months ended March 31, 2014 was higher than the rate for the three and six months ended March 31, 2013 primarily due to tax expenditures relating to the income received on the sale of the Vicksburg as well as an increase to our reserve for uncertain tax provisions. 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, 2014, we had approximately $13.9 million of reserves for uncertain tax positions, including estimated accrued interest and penalties of $4.0 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 $13.9 million of the net uncertain tax liabilities would affect the effective tax rate if realized.

Our United States tax returns for fiscal year 2010 and subsequent years remain subject to examination by tax authorities. As we conduct business globally, we have various tax years that remain open to examination in certain international tax jurisdictions, including tax returns in Australia for fiscal years 2008 through 2013 and tax returns in Equatorial Guinea for calendar years 2011 through 2013. Although we cannot predict the outcome of ongoing or future tax examinations, we do not anticipate that the ultimate resolution of these examinations will have a material impact on our consolidated financial position, results of operations or cash flows.