Derivative Instruments and Hedging Activities (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Gain) Loss on Derivative Instruments Recognized in Other Comprehensive (Income) Loss	$ 0	$ 0	$ (23)
Amount of (Gain) Loss on Derivative Instruments Reclassified from Accumulated Other Comprehensive (Income) Loss	1	1	1
Interest Rate Derivative Instruments in Cash Flow Hedging Relationships
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Gain) Loss on Derivative Instruments Recognized in Other Comprehensive (Income) Loss	0	0	(23)
Amount of (Gain) Loss on Derivative Instruments Reclassified from Accumulated Other Comprehensive (Income) Loss	$ 1	$ 1	$ 1