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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2013

Estimated Fair Value of Financial Instruments, Debt Instruments [Table Text Block]



	December 31, 2013				December 31, 2012
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in millions)
Financial liabilities:
Long-term debt, including current portion	$	4,995	$	5,165	$	6,043	$	6,636

- Definition

Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

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