XML 23 R48.htm IDEA: XBRL DOCUMENT

Income Taxes, Capital Loss and Tax Credit Carryforwards (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Jun. 30, 2011	Dec. 31, 2010
Capital Loss Carryforwards [Line Items]
Valuation allowance on deferred tax asset			$ 1.2
Deferred tax asset			2.7
Reversal of valuation allowance		1.2
Tax credit carryforwards	$ 61.9
Expiration date	2029

The tax effect as of the balance sheet date of the amount of future tax deductions arising from capital losses in excess of statutory limitations in historical filings, and which can only be utilized if sufficient tax-basis income is generated in future periods and providing tax laws continue to allow such utilization.

+ References+ Details

- Definition

The cumulative amount of future tax effects arising from the unused tax credit carryforward that cannot be utilized on the tax return during a year that may be carried forward to reduce taxable income or taxes payable in a future year; a tax credit carryforward is the amount by which tax credits available for utilization exceed statutory limitations.

+ References+ Details