Income Taxes	6 Months Ended
Jun. 30, 2011
Income Taxes [Abstract]
INCOME TAXES	4. INCOME TAXES We file a consolidated federal income tax return, consolidated unitary tax returns in certain states, and other separate state income tax returns for certain of our subsidiary companies. The income tax provision for interim periods is determined based upon the expected effective income tax rate for the full year and the tax rate applicable to certain discrete transactions in the interim period. To determine the annual effective income tax rate, we must estimate both the total income (loss) before income tax for the full year and the jurisdictions in which that income (loss) is subject to tax. The actual effective income tax rate for the full year may differ from these estimates if income (loss) before income tax is greater or less than what was estimated or if the allocation of income to jurisdictions in which it is taxed is different from the estimated allocations. We review and adjust our estimated effective income tax rate for the full year each quarter based upon our most recent estimates of income (loss) before income tax for the full year and the jurisdictions in which we expect that income will be taxed. The effective income tax rate for the six months ended June 30, 2011, was 22.1%. The primary difference between this rate and the U.S. Federal statutory rate of 35% is the impact of state taxes and non-deductible expenses. The effective income tax rate of the six months ended June 30, 2010, was 118%. The primary difference between this rate and the U.S. Federal statutory rate of 35% is the impact of state taxes, and the accrual of taxes and interest on uncertain tax positions and non-deductible expenses. At June 30, 2011, we had net deferred tax assets of $35 million. Substantially all of our deferred tax assets reverse in 2011 and 2012. We can use any tax losses resulting from the deferred tax assets reversing in 2011 or 2012 to claim refunds of taxes paid in prior years. Management believes that it is more likely than not that we will realize the benefits of our Federal deferred tax assets and therefore has not recorded a valuation allowance for them. If current economic conditions persist or worsen, future estimates of taxable income could be lower than our current estimates, which may require valuation allowances to be recorded in future reporting periods. State carryforwards are recognized as deferred tax assets, subject to valuation allowances. At each balance sheet date, we estimate the amount of carryforwards that are not expected to be used prior to expiration of the carryforward period. The tax effect of the carryforwards that are not expected to be used prior to their expiration is included as a valuation allowance.

Income Taxes

6 Months Ended

Jun. 30, 2011

4. INCOME TAXES

We file a consolidated federal income tax return, consolidated unitary tax returns in certain states, and other separate state income tax returns for certain of our subsidiary companies.

The income tax provision for interim periods is determined based upon the expected effective income tax rate for the full year and the tax rate applicable to certain discrete transactions in the interim period. To determine the annual effective income tax rate, we must estimate both the total income (loss) before income tax for the full year and the jurisdictions in which that income (loss) is subject to tax. The actual effective income tax rate for the full year may differ from these estimates if income (loss) before income tax is greater or less than what was estimated or if the allocation of income to jurisdictions in which it is taxed is different from the estimated allocations. We review and adjust our estimated effective income tax rate for the full year each quarter based upon our most recent estimates of income (loss) before income tax for the full year and the jurisdictions in which we expect that income will be taxed.

The effective income tax rate for the six months ended June 30, 2011, was 22.1%. The primary difference between this rate and the U.S. Federal statutory rate of 35% is the impact of state taxes and non-deductible expenses.

The effective income tax rate of the six months ended June 30, 2010, was 118%. The primary difference between this rate and the U.S. Federal statutory rate of 35% is the impact of state taxes, and the accrual of taxes and interest on uncertain tax positions and non-deductible expenses.

At June 30, 2011, we had net deferred tax assets of $35 million. Substantially all of our deferred tax assets reverse in 2011 and 2012. We can use any tax losses resulting from the deferred tax assets reversing in 2011 or 2012 to claim refunds of taxes paid in prior years. Management believes that it is more likely than not that we will realize the benefits of our Federal deferred tax assets and therefore has not recorded a valuation allowance for them. If current economic conditions persist or worsen, future estimates of taxable income could be lower than our current estimates, which may require valuation allowances to be recorded in future reporting periods.

State carryforwards are recognized as deferred tax assets, subject to valuation allowances. At each balance sheet date, we estimate the amount of carryforwards that are not expected to be used prior to expiration of the carryforward period. The tax effect of the carryforwards that are not expected to be used prior to their expiration is included as a valuation allowance.