Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash provided by operating activities:
Net income	$ 204.3	$ 225.1
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization of property and equipment	256.0	255.9
Landfill depletion and amortization	120.8	125.7
Amortization of intangible and other assets	37.6	35.2
Accretion	39.2	40.4
Non-cash interest expense - debt	16.1	28.6
Non-cash interest expense - other	24.5	24.2
Stock-based compensation	12.1	12.0
Deferred tax benefit	(58.3)	(58.3)
Provision for doubtful accounts, net of adjustments	6.1	10.3
Excess income tax benefit from stock option exercises	(2.1)	(1.8)
Asset impairments	39.4	0.5
Loss on extinguishment of debt	(201.3)	(132.3)
Gain on disposition of assets, net	(29.8)	(6.5)
Other non-cash items	(5.1)	0.8
Change in assets and liabilities, net of effects from business acquisitions and divestitures:
Accounts receivable	(47.6)	(43.9)
Prepaid expenses and other assets	32.0	(1.8)
Accounts payable	(33.1)	(62.8)
Restructuring and synergy related expenditures	(2.7)	(13.0)
Capping, closure and post-closure expenditures	(35.2)	(28.0)
Remediation expenditures	(16.2)	(23.4)
Other liabilities	36.3	(56.7)
Cash provided by operating activities	795.6	594.8
Cash used in investing activities:
Purchases of property and equipment	(481.7)	(385.4)
Proceeds from sales of property and equipment	16.3	12.6
Cash used in acquisitions, net of cash acquired	(28.0)	(0.8)
Cash proceeds from divestitures, net of cash divested	10.4
Change in restricted cash and marketable securities	12.7	(76.0)
Other	(1.9)	0.1
Cash used in investing activities	(472.2)	(449.5)
Cash used in financing activities:
Proceeds from notes payable and long-term debt	819.5	1,020.2
Proceeds from issuance of senior notes, net of discount	1,844.9	1,499.4
Payments of notes payable and long-term debt	(2,228.3)	(2,494.8)
Premiums paid on extinguishment of debt	(86.8)	(30.4)
Fees paid to issue and retire senior notes and certain hedging relationships	(58.6)	(20.8)
Issuances of common stock	31.4	34.3
Excess income tax benefit from stock option exercises	2.1	1.8
Purchases of common stock for treasury	(262.9)	(1.4)
Cash dividends paid	(152.5)	(144.9)
Distributions paid to noncontrolling interests		(0.7)
Cash used in financing activities	(91.2)	(137.3)
(Decrease) Increase in Cash and Cash Equivalents	232.2	8.0
Cash and cash equivalents at beginning of period	88.3	48.0
Cash and cash equivalents at end of period	$ 320.5	$ 56.0