Other Assets and Investments (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Long Lived Assets Held-for-sale [Line Items]
Investment Owned, Balance, Shares	3,421,306	3,421,306
Investment Owned, at Fair Value	$ 49	$ 41
Available-for-sale Securities, Gross Unrealized Holding Gains	33	25
Available-for-sale Securities Gross Unrealized Holding Gains After Tax	34	26
Proceeds from Dividends Received	88	129	168
Equity Method Investment, Dividends or Distributions	21	11	8
Assets Held-for-sale, Current		43
Land [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets Held-for-sale, Current		29
Other Intangible Assets [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets Held-for-sale, Current		$ 14