Income Taxes	3 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Our consolidated effective income tax rate for the three months ended December 31, 2015 was approximately 22%, as compared to 17% for the three months ended December 31, 2014. The effective tax rate for the three months ended December 31, 2015 was higher than the rate for the three months ended December 31, 2014, primarily due to the impairment charge to the Atwood Falcon, which did not result in a corresponding tax benefit. 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 December 31, 2015, we had approximately $15.1 million of reserves for uncertain tax positions, including estimated accrued interest and penalties of $3.7 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 of the net uncertain tax liabilities would affect the effective tax rate if realized.

Income Taxes

3 Months Ended

Dec. 31, 2015

INCOME TAXES

Our consolidated effective income tax rate for the three months ended December 31, 2015 was approximately 22%, as compared to 17% for the three months ended December 31, 2014. The effective tax rate for the three months ended December 31, 2015 was higher than the rate for the three months ended December 31, 2014, primarily due to the impairment charge to the Atwood Falcon, which did not result in a corresponding tax benefit. 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 December 31, 2015, we had approximately $15.1 million of reserves for uncertain tax positions, including estimated accrued interest and penalties of $3.7 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 of the net uncertain tax liabilities would affect the effective tax rate if realized.