INCOME TAXES	3 Months Ended
Dec. 31, 2016
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES We have historically calculated the provision for income taxes during interim reporting periods by applying an estimate of the annual effective tax rate for the full fiscal year to “ordinary” income or loss (pretax income or loss excluding unusual or infrequently occurring discrete items) for the reporting period. Beginning with the current reporting period, we have used a discrete effective tax rate method to calculate taxes for the three months ended December 31, 2016. We determined that since small changes in estimated “ordinary” income would result in significant changes in the estimated annual effective tax rate that the historical ("annualized") method would not provide a reliable estimate for the three months ended December 31, 2016. We anticipate that we will utilize the discrete effective tax rate method to calculate taxes for the remainder of the fiscal year. Our estimated consolidated effective income tax rate for the three months ended December 31, 2016 was approximately 20%, as compared to 22% for the three months ended December 31, 2015. The effective tax rate for the three months ended December 31, 2016 was lower than the rate for the three months ended December 31, 2015, primarily due to a change in the geographical mix of income as well as the impact of an impairment charge taken against the Atwood Falcon during the three months ended December 31, 2015. 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. As of December 31, 2016, we had approximately $15.7 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 Unaudited Condensed 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, 2016

We have historically calculated the provision for income taxes during interim reporting periods by applying an estimate of the annual effective tax rate for the full fiscal year to “ordinary” income or loss (pretax income or loss excluding unusual or infrequently occurring discrete items) for the reporting period. Beginning with the current reporting period, we have used a discrete effective tax rate method to calculate taxes for the three months ended December 31, 2016. We determined that since small changes in estimated “ordinary” income would result in significant changes in the estimated annual effective tax rate that the historical ("annualized") method would not provide a reliable estimate for the three months ended December 31, 2016. We anticipate that we will utilize the discrete effective tax rate method to calculate taxes for the remainder of the fiscal year.

Our estimated consolidated effective income tax rate for the three months ended December 31, 2016 was approximately 20%, as compared to 22% for the three months ended December 31, 2015. The effective tax rate for the three months ended December 31, 2016 was lower than the rate for the three months ended December 31, 2015, primarily due to a change in the geographical mix of income as well as the impact of an impairment charge taken against the Atwood Falcon during the three months ended December 31, 2015.

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. As of December 31, 2016, we had approximately $15.7 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 Unaudited Condensed 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.