Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000100885 (http://www.sec.gov/CIK)

Interest And Penalties - Income Tax Expense [Abstract]	Period [Axis]
	2013-10-01 - 2013-12-31	2013-01-01 - 2013-12-31	2012-01-01 - 2012-12-31	2011-01-01 - 2011-12-31
Interest And Penalties - Income Tax Expense [Abstract]
Total accrued liabilities for interest and penalties	6,000,000	6,000,000	6,000,000
Total interest and penalties recognized as part of income tax expense		7,000,000		10,000,000
Total interest and penalties recognized as part of income tax benefit			(4,000,000)
Internal Revenue Service examinations description		Internal Revenue Service (IRS) examinations have been completed and settled for all years prior to 2005, and the statute of limitations bars any additional tax assessments. The IRS has completed their examinations and issued notices of deficiency for tax years 2005 through 2010. We disagree with many of their proposed adjustments, and we are at IRS Appeals for those years. Additionally, several state tax authorities are examining our state income tax returns for years 2006 through 2010.
Tax refund in connection to settlement	8,000,000	8,000,000
Taxes paid in connection to settlement	68,000,000
Interest paid in connection to settlement	12,000,000
Income tax examination payment	80,000,000