Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified					12 Months Ended				12 Months Ended					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Lease Interest And Other [Member]	Dec. 31, 2011 Lease Interest And Other [Member]	Dec. 31, 2012 Lease Interest And Other [Member] Minimum [Member]	Dec. 31, 2012 Lease Interest And Other [Member] Maximum [Member]	Dec. 31, 2012 Landfill [Member]	Dec. 31, 2011 Landfill [Member]	Dec. 31, 2012 Landfill [Member] Minimum [Member]	Dec. 31, 2012 Landfill [Member] Maximum [Member]	Dec. 31, 2012 Amortizable Intangible Assets [Member]	Jan. 25, 2013 Amortizable Intangible Assets [Member]	Dec. 31, 2011 Amortizable Intangible Assets [Member]	Dec. 31, 2012 Lease Interest [Member]	Dec. 31, 2011 Lease Interest [Member]	Dec. 31, 2010 Lease Interest [Member]	Dec. 31, 2012 Other Intangible Assets [Member]	Dec. 31, 2011 Other Intangible Assets [Member]	Dec. 31, 2010 Other Intangible Assets [Member]
Schedule of Other Finite and Infinite Intangible Assets [Line Items]
Intangible Assets Gross Excluding Goodwill	$ 42	$ 113	$ 14	$ 85			$ 18	$ 18			$ 32		$ 103				$ 10	$ 10
Intangible Assets Accumulated Amortization	19	35	3	21			16	14			19		35				0	0
Other intangible assets, net	23	78	11	64			2	4			13		68				10	10
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months												3
Finite-Lived Intangible Assets, Amortization Expense, Year Two												1
Finite-Lived Intangible Assets, Amortization Expense, Year Three												1
Finite-Lived Intangible Assets, Amortization Expense, Year Four												1
Finite-Lived Intangible Assets, Amortization Expense, Year Five												1
Finite-Lived Intangible Assets, Amortization Expense, after Year Five												6
Cost of Services, Amortization											$ 6			$ 3	$ 3	$ 3	$ 6	$ 6	$ 6
Finite-Lived Intangible Asset, Useful Life					11 years	17 years			1 year	5 years