Capital and Operating Leases (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Capital and Operating Leases [Abstract]
Capital Leases, Future Minimum Payments Due, Next Twelve Months	$ 3
Capital Leases, Future Minimum Payments Due in Two Years	4
Capital Leases, Future Minimum Payments Due in Three Years	0
Capital Leases, Future Minimum Payments Due in Four Years	0
Capital Leases, Future Minimum Payments Due in Five Years	0
Capital Leases, Future Minimum Payments Due Thereafter	0
Capital Lease, Total minimum payments	7
Capital Leases, Less imputed interest	0
Capital Leases, Present value of net minimum lease payments	7
Capital Leases, Less current portion	(3)
Capital Leases, Non-current portion	4	1
Operating Leases, Future Minimum Payments Due, Next Twelve Months	24
Operating Leases, Future Minimum Payments Due in Two Years	20
Operating Leases, Future Minimum Payments Due in Three Years	18
Operating Leases, Future Minimum Payments Due in Four Years	17
Operating Leases, Future Minimum Payments Due in Five Years	14
Operating Leases, Future Minimum Payments Due Thereafter	51
Operating Lease, Total minimum payments	$ 144