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Income Taxes | 9 Months Ended
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Jun. 30, 2014
Income Tax Disclosure [Abstract] |
Income Taxes | Income Taxes During the three months ended March 31, 2014, we completed an analysis of our taxable income apportionment by state. As a result of this analysis, we reduced our marginal tax rate, used in our calculation of deferred tax assets and liabilities, by 0.52%. This resulted in a net decrease in deferred tax liabilities and income tax expense of $2.0 million during the nine months ended June 30, 2014. At the beginning of 2013, we had valuation allowances related to our deferred tax assets. We reevaluate the need for a valuation allowance against our U.S. deferred tax assets each quarter, considering results to date, projections of taxable income, tax planning strategies and reversing taxable temporary differences. During the three months ended June 30, 2014, we decreased our deferred tax asset valuation allowance and income tax expense by $1.1 million. During the nine months ended June 30, 2013, we decreased our U.S. deferred tax valuation allowance by $15.1 million, including $7.1 million in other comprehensive income and $3.5 million in discontinued operations. Notwithstanding the valuation allowance, our net operating loss carryforwards remain available to offset future taxable earnings. The components of income tax expense on continuing operations are provided below.
| Three months ended |  | Nine months ended
| June 30, |  | June 30,
| 2014 |  | 2013 |  | 2014 |  | 2013
| (in millions)
Expense from income before income taxes | $ | 11.9 |  |  | $ | 8.1 |  |  | $ | 17.5 |  |  | $ | 9.6 |
Deferred tax asset valuation allowance adjustments | (1.1 | ) |  | (4.0 | ) |  | (1.1 | ) |  | (4.5 | )
State tax rate change | — |  |  | — |  |  | (2.0 | ) |  | — |
Other discrete items | — |  |  | 0.1 |  |  | (0.2 | ) |  | — |
| $ | 10.8 |  |  | $ | 4.2 |  |  | $ | 14.2 |  |  | $ | 5.1 |
At June 30, 2014 and September 30, 2013, the gross liabilities for unrecognized income tax benefits were $2.7 million and $3.7 million, respectively. We recognize interest related to uncertain income tax positions as interest expense and would recognize any penalties that may be incurred as selling, general and administrative expenses. At June 30, 2014 and September 30, 2013, we had $0.8 million and $0.9 million, respectively, of accrued interest liabilities related to uncertain tax positions. Our state income tax returns are generally closed for years prior to 2006, except to the extent of our state net operating loss carryforwards. Our Canadian income tax returns are generally closed for years prior to 2006. We are currently under audit by several states at various levels of completion. We do not have any material unpaid assessments.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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