Income Taxes	3 Months Ended
Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	7. Income Taxes For the three months ended December 31, 2016, the Company recorded income tax expense of $17 million. The tax expense for the three months ended December 31, 2016 was higher than the expected tax expense at the statutory tax rate of 35% primarily due to income withholding taxes, state income taxes, foreign losses with no tax benefit and an increase in uncertain tax positions, partially offset by a reduction in valuation allowance. For the three months ended December 31, 2015, the Company recorded an income tax benefit of $3 million. The tax benefit for the three months ended December 31, 2015 was lower than the expected tax expense at the statutory tax rate of 35% primarily due to a $10 million benefit for changes in statutory tax rates in foreign jurisdictions and reduction in valuation allowance, partially offset by income withholding taxes, foreign losses with no tax benefit and an increase in uncertain tax positions. The Company has determined that is reasonably possible that its existing reserve for uncertain tax positions as of December 31, 2016 could decrease by up to approximately $20 million related to various ongoing audits and settlement discussions in various foreign jurisdictions.

Income Taxes

3 Months Ended

Dec. 31, 2016

7. Income Taxes

For the three months ended December 31, 2016, the Company recorded income tax expense of $17 million. The tax expense for the three months ended December 31, 2016 was higher than the expected tax expense at the statutory tax rate of 35% primarily due to income withholding taxes, state income taxes, foreign losses with no tax benefit and an increase in uncertain tax positions, partially offset by a reduction in valuation allowance.

For the three months ended December 31, 2015, the Company recorded an income tax benefit of $3 million. The tax benefit for the three months ended December 31, 2015 was lower than the expected tax expense at the statutory tax rate of 35% primarily due to a $10 million benefit for changes in statutory tax rates in foreign jurisdictions and reduction in valuation allowance, partially offset by income withholding taxes, foreign losses with no tax benefit and an increase in uncertain tax positions.

The Company has determined that is reasonably possible that its existing reserve for uncertain tax positions as of December 31, 2016 could decrease by up to approximately $20 million related to various ongoing audits and settlement discussions in various foreign jurisdictions.