Income Taxes	6 Months Ended
Jun. 30, 2012
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three and six months ended June 30, 2012 and 2011, the effective tax rate for continuing operations was 36.3%. Including discontinued operations, the effective tax rate was 36.4% for the three and six months ended June 30, 2011. At the end of each interim period, we estimate the annual effective tax rate and apply that rate to our ordinary quarterly earnings. The tax expense or benefit related to significant, unusual or extraordinary items that will be separately reported or reported net of their related tax effect, and are individually computed, are recognized in the interim period in which those items occur. In addition, the effect of changes in enacted tax laws or rates or tax status is recognized in the interim period in which the change occurs. As of June 30, 2012, December 31, 2011 and June 30, 2011, the total amount of federal, state and local, and foreign unrecognized tax benefits was $66 million, $57 million and $62 million, respectively, exclusive of interest and penalties. We recognize accrued interest and penalties related to unrecognized tax benefits in interest expense and operating expense, respectively. In addition to the unrecognized tax benefits, as of June 30, 2012, December 31, 2011 and June 30, 2011, we had $15 million, $13 million and $15 million, respectively, of accrued interest and penalties associated with uncertain tax positions.

Income Taxes

6 Months Ended

Jun. 30, 2012

For the three and six months ended June 30, 2012 and 2011, the effective tax rate for continuing operations was 36.3%. Including discontinued operations, the effective tax rate was 36.4% for the three and six months ended June 30, 2011.

At the end of each interim period, we estimate the annual effective tax rate and apply that rate to our ordinary quarterly earnings. The tax expense or benefit related to significant, unusual or extraordinary items that will be separately reported or reported net of their related tax effect, and are individually computed, are recognized in the interim period in which those items occur. In addition, the effect of changes in enacted tax laws or rates or tax status is recognized in the interim period in which the change occurs.

As of June 30, 2012, December 31, 2011 and June 30, 2011, the total amount of federal, state and local, and foreign unrecognized tax benefits was $66 million, $57 million and $62 million, respectively, exclusive of interest and penalties. We recognize accrued interest and penalties related to unrecognized tax benefits in interest expense and operating expense, respectively. In addition to the unrecognized tax benefits, as of June 30, 2012, December 31, 2011 and June 30, 2011, we had $15 million, $13 million and $15 million, respectively, of accrued interest and penalties associated with uncertain tax positions.