Components of Waste and Service Revenues (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Components of Waste and Service Revenues [Line Items]
Waste and service revenues	$ 1,011	$ 1,008	$ 981
Waste and Services Revenue [Member]
Components of Waste and Service Revenues [Line Items]
Waste and service revenues unrelated to project debt	964	954	903
Revenue earned explicitly to service project debt - principal	39	43	60
Revenue earned explicitly to service project debt - interest	8	11	18