CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Consolidated net income	$ 625	$ 731
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	971	935
Deferred income tax provision	12	48
Interest accretion on landfill liabilities	62	62
Interest accretion on and discount rate adjustments to environmental remediation liabilities and recovery assets	2	21
Provision for bad debts	39	29
Equity-based compensation expense	21	38
Excess tax benefits associated with equity-based transactions	(10)	(7)
Net gain on disposal of assets	(11)	(13)
Effect of (income) expense from divestitures, asset impairments and unusual items and other	69	6
Equity in net losses of unconsolidated entities	35	20
Change in operating assets and liabilities, net of effects of acquisitions and divestitures:
Receivables	(112)	(146)
Other current assets	(45)	(25)
Other assets	102	35
Accounts payable and accrued liabilities	7	96
Deferred revenues and other liabilities	(49)	(93)
Net cash provided by (used in) operating activities	1,718	1,737
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(178)	(645)
Capital expenditures	(1,132)	(909)
Proceeds from divestitures of businesses (net of cash divested) and other sales of assets	28	22
Net receipts from restricted trust and escrow accounts	15	74
Investments in unconsolidated entities	(61)	(92)
Other	(33)	15
Net cash used in investing activities	(1,361)	(1,535)
Cash flows from financing activities:
New borrowings	685	1,001
Debt repayments	(473)	(425)
Common stock repurchases		(528)
Cash dividends	(493)	(481)
Exercise of common stock options	39	40
Excess tax benefits associated with equity-based transactions	10	7
Distributions paid to noncontrolling interests	(31)	(30)
Other	44	(43)
Net cash provided by (used in) financing activities	(219)	(459)
Effect of exchange rate changes on cash and cash equivalents	2
Increase (decrease) in cash and cash equivalents	140	(257)
Cash and cash equivalents at beginning of period	258	539
Cash and cash equivalents at end of period	$ 398	$ 282