Income Taxes	9 Months Ended
Jan. 31, 2013
Income Taxes [Abstract]
Income Taxes	9. Income Taxes We file a consolidated federal income tax return in the United States with the Internal Revenue Service (IRS) and file tax returns in various state and foreign jurisdictions. Tax returns are typically examined and settled upon completion of the exam, with tax controversies settled through an appeal process. In November 2012, we received written approval from the IRS Joint Committee on Taxation of the settlement of a majority of the issues related to the examination of our 1999 through 2007 U.S. federal consolidated tax returns. In the third quarter, we recorded the impact of the settlement which reduced uncertain tax benefits by $59.0 million, with $33.3 million of the total resulting in an income tax benefit in the quarter. Also reducing our tax expense is a further benefit of $10.0 million primarily related to interest adjustments, bringing the total tax benefit from the settlement to $43.3 million. Except for three issues for which we are pursuing refund claims for tax years 2002 through 2007, which will remain open until resolved, these years are closed. In addition, U.S. federal consolidated tax returns for 2008 through 2010 are currently under examination. We had gross unrecognized tax benefits of $146.6 million and $206.4 million at January 31, 2013 and April 30, 2012, respectively. The gross unrecognized tax benefits decreased $59.8 million net in the current year, due primarily to the settlement with the IRS during the third quarter. We believe it is reasonably possible that the balance of unrecognized tax benefits could decrease by approximately $18 million before January 31, 2014. This anticipated decrease is due primarily to the expiration of statutes of limitations and anticipated settlements of state audit issues. This amount is included in accrued income taxes in our consolidated balance sheet. The remaining amount is classified as long-term and is included in other noncurrent liabilities in the consolidated balance sheet.

Income Taxes

9 Months Ended

Jan. 31, 2013

9. Income Taxes

We file a consolidated federal income tax return in the United States with the Internal Revenue Service (IRS) and file tax returns in various state and foreign jurisdictions. Tax returns are typically examined and settled upon completion of the exam, with tax controversies settled through an appeal process.

In November 2012, we received written approval from the IRS Joint Committee on Taxation of the settlement of a majority of the issues related to the examination of our 1999 through 2007 U.S. federal consolidated tax returns. In the third quarter, we recorded the impact of the settlement which reduced uncertain tax benefits by $59.0 million, with $33.3 million of the total resulting in an income tax benefit in the quarter. Also reducing our tax expense is a further benefit of $10.0 million primarily related to interest adjustments, bringing the total tax benefit from the settlement to $43.3 million.

Except for three issues for which we are pursuing refund claims for tax years 2002 through 2007, which will remain open until resolved, these years are closed. In addition, U.S. federal consolidated tax returns for 2008 through 2010 are currently under examination.

We had gross unrecognized tax benefits of $146.6 million and $206.4 million at January 31, 2013 and April 30, 2012, respectively. The gross unrecognized tax benefits decreased $59.8 million net in the current year, due primarily to the settlement with the IRS during the third quarter. We believe it is reasonably possible that the balance of unrecognized tax benefits could decrease by approximately $18 million before January 31, 2014. This anticipated decrease is due primarily to the expiration of statutes of limitations and anticipated settlements of state audit issues. This amount is included in accrued income taxes in our consolidated balance sheet. The remaining amount is classified as long-term and is included in other noncurrent liabilities in the consolidated balance sheet.