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Unaudited Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Cash provided by operating activities:    
Net income $ 1,291.7 $ 1,140.6
Adjustments to reconcile net income to cash provided by operating activities:    
Depreciation, amortization, depletion and accretion 1,172.6 1,068.7
Non-cash interest expense 65.5 55.3
Stock-based compensation 31.7 30.8
Deferred tax provision 52.2 100.2
Provision for doubtful accounts, net of adjustments 38.6 27.8
Loss on extinguishment of debt 0.2 0.0
Gain on disposition of assets and asset impairments, net (3.7) (8.0)
Environmental adjustments 0.0 (0.1)
(Gain) loss from unconsolidated equity method investments (0.2) 69.2
Other non-cash items (0.6) 8.0
Change in assets and liabilities, net of effects from business acquisitions and divestitures:    
Accounts receivable (161.0) (206.1)
Prepaid expenses and other assets 121.4 28.0
Accounts payable 93.5 97.7
Capping, closure and post-closure expenditures (40.5) (35.6)
Remediation expenditures (31.4) (37.3)
Other liabilities 86.9 40.8
Proceeds for retirement of certain hedging relationships 2.4 0.0
Cash provided by operating activities 2,719.3 2,380.0 Close
Cash (used in) provided by investing activities:    
Purchases of property and equipment (1,083.2) (924.8)
Proceeds from sales of property and equipment 25.0 24.0
Cash used in acquisitions and investments, net of cash and restricted cash acquired (1,051.1) (2,847.6)
Cash paid for business divestitures 1.7 50.1
Purchases of restricted marketable securities (13.8) (15.7)
Sales of restricted marketable securities 13.1 15.4
Other 7.5 (2.3)
Cash used in investing activities (2,100.8) (3,700.9) Close
Cash provided by (used in) financing activities:    
Proceeds from credit facilities and notes payable, net of fees 27,940.2 10,496.5
Proceeds from issuance of senior notes, net of discount and fees 1,183.6 0.0
Payments of credit facilities and notes payable (29,024.7) (8,472.1)
Issuances of common stock, net (4.3) (12.9)
Purchases of common stock for treasury (190.4) (203.5)
Cash dividends paid (469.5) (436.5)
Distributions paid to non-controlling interests in consolidated subsidiary 0.0 (0.8)
Contingent consideration payments (14.1) (4.5)
Cash (used in) provided by financing activities (579.2) 1,366.2 Close
Effect of foreign exchange rate changes on cash 0.2 (3.1) Close
Increase in cash, cash equivalents, restricted cash and restricted cash equivalents 39.5 42.2 Close
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period 214.3 105.6
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period $ 253.8 $ 147.8