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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash flows from operating activities:    
Net Income (Loss) $ 602,871 $ 738,405
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 283,736 275,515
Deferred income taxes (27,322) (37,902)
Stock-based compensation expense 33,626 23,421
Other non-cash adjustments 15 804
Changes in assets and liabilities, net of assets acquired and liabilities assumed:    
Receivables (36,145) (179,946)
Inventories (49,236) 77,277
Contract assets (25,260) (6,815)
Other current assets (10,038) 25,652
Other assets and liabilities (32,607) (13,815)
Accounts payable 141,816 260,972
Accrued liabilities (136,789) (113,695)
Contract liabilities 24,604 (4,166)
Net cash provided by operating activities 769,271 1,045,707
Cash flows from investing activities:    
Cash used for acquisitions, net of cash acquired (132,918) (90,559)
Purchases of property, plant and equipment (181,319) (231,110)
Proceeds from sale of property, plant and equipment 6,298 9,858
Cash used for equity investments (7,686)  
Net cash used in investing activities (315,625) (311,811)
Cash flows from financing activities:    
Borrowings under revolving credit facility 897,000 2,801,000
Repayments under revolving credit facility (1,262,000) (2,108,000)
Proceeds from long-term debt and other loans 1,000,000  
Repayments of long-term debt and other loans (1,767) (2,112)
Payments of loan costs (12,829) (1,897)
Payment of acquisition-related deferred and contingent consideration (9,522)  
Tax withholdings on and exercises of equity awards (54,997) (32,028)
Repurchase of common stock (1,000,118) (1,381,988)
Net cash used in financing activities (444,233) (725,025)
Net change in cash and cash equivalents 9,413 8,871
Cash and cash equivalents at beginning of period 66,156 80,445
Cash and cash equivalents at end of period 75,569 89,316
Supplemental disclosures of cash flow information:    
Cash paid for interest 80,916 87,084
Cash paid for income taxes 202,088 296,474
Supplemental disclosures of non-cash activities:    
Non-cash or accrued consideration for acquisitions (28) 6,010
Accrued purchases of property, plant and equipment 11,437 7,420
Right-of-use assets obtained in exchange for operating lease obligations $ 61,243 42,916
Amounts accrued related to repurchases of common stock   $ 12,762