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       Total gross unrecognized income tax benefits were
       $60&amp;#160;million as of June&amp;#160;30, 2010, and $58&amp;#160;million
       as of December&amp;#160;31, 2009. At June&amp;#160;30, 2010, and
       December&amp;#160;31, 2009, the total amount of unrecognized income
       tax benefits that, if recognized, would favorably impact our
       effective tax rate for continuing operations in future periods
       was $50&amp;#160;million. As of June&amp;#160;30, 2010, it is reasonably
       possible that the amount of unrecognized income tax benefits may
       increase or decrease during the following twelve months.
       However, it is not expected that any such changes, individually
       or in total, would significantly affect our operating results or
       financial condition.
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       It is our continuing practice to record accruals for interest
       and penalties related to income tax matters as income tax
       expense. Such accruals totaled $13&amp;#160;million as of
       June&amp;#160;30, 2010, and $11&amp;#160;million as of December&amp;#160;31,
       2009. Expense recorded in the first half of 2010 for interest
       and penalties for continuing operations was $1&amp;#160;million.
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       U.S.&amp;#160;federal income tax returns filed for the years 2006
       through 2008 are open for examination by the Internal Revenue
       Service. Various state, local, and foreign tax returns filed for
       the years 2002 through 2008 are open for examination by tax
       authorities in those jurisdictions.
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       At June&amp;#160;30, 2010, and December&amp;#160;31, 2009, total gross
       unrecognized income tax benefits included $1&amp;#160;million
       related to discontinued operations, all of which, if recognized,
       would favorably impact income related to discontinued operations
       in future periods. Expense recorded in the first half of 2010
       for interest and penalties for discontinued operations was
       immaterial.
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       In connection with the adoption of
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       &amp;#8220;Share-Based Payment,&amp;#8221; we elected to use the
       simplified method in calculating our additional paid-in capital
       pool, as described in prior authoritative guidance.
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       requires that tax deductions for compensation costs in excess of
       amounts recognized for accounting purposes be reported as cash
       flow from financing activities, rather than as cash flow from
       operating activities. Such &amp;#8220;excess&amp;#8221; amounts were
       $2&amp;#160;million for the six months ended June&amp;#160;30, 2010.
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       On March&amp;#160;23, 2010, the Patient Protection and Affordable
       Care Act (the &amp;#8220;Act&amp;#8221;) was signed into law. Included in
       the provisions is a change in the federal income tax treatment
       of the Medicare Part&amp;#160;D subsidy. For periods beginning after
       December&amp;#160;31, 2012, we will no longer be entitled to receive
       a federal income tax deduction
   for payments made to provide our retirees with prescription drug
       benefits which equal previous subsidies we received from the
       U.S.&amp;#160;government for providing retirees with prescription
       drug benefits. We had previously recorded a deferred income tax
       asset for the tax benefit of future payments made with respect
       to this subsidy. As a result of the Act, we have written-off
       $3&amp;#160;million of deferred income tax assets as a component of
       income tax expense from continuing operations for the six-month
       period ended June&amp;#160;30, 2010.
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