Income Tax Expense Level 1 (Notes)	3 Months Ended
Income Tax Expense Level 1 (Notes)	Mar. 31, 2012
INCOME TAX EXPENSE [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAX EXPENSE The effective tax rates for the three months ended March 31, 2012 and 2011 were 24.8% and 14.0%, respectively. Included in the three months ended March 31, 2011 is the reversal of $10.4 million in tax liabilities provided over the period of 2007-2010 as a result of audits of prior year returns offset by $3.7 million in other discrete items. The change in income tax expense also reflects the change in activity levels among jurisdictions with different tax rates.

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.

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+ Details