| Dec 31,
2010 | Dec 31,
2011 | Dec 31,
2012 | Dec 31,
2013 | Dec 31,
2014 | Dec 31,
2015 | Dec 31,
2016 | Dec 31,
2017 | Dec 31,
2018 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 | Dec 31,
2024 |
|---|
| Net income | 131 | 127 | 130 | 96 | -28 | 44 | -40 | 101 | 66 | 98 | 135 | 203 | 412 | 378 | 402 |
|---|
| Depreciation and amortization | 92 | 123 | 162 | 264 | 276 | 274 | 287 | 288 | 299 | 301 | 293 | 298 | 348 | 366 | 401 |
|---|
| Allowance for doubtful accounts | 1 | 1 | 1 | 8 | 9 | 5 | 7 | 8 | 16 | 2 | 10 | 8 | 8 | 6 | 8 |
|---|
| Amortization of Debt Issuance Costs and Discounts | 3 | 2 | 2 | 3 | 3 | 3 | 4 | 3 | 4 | 4 | 4 | 4 | 6 | 5 | 6 |
|---|
| Accretion of environmental liabilities | 10 | 10 | 10 | 12 | 11 | 10 | 10 | 9 | 10 | 10 | 11 | 12 | 13 | 14 | 13 |
|---|
| Changes in environmental liability estimates | -8 | -3 | -8 | -4 | -3 | -11 | -4 | -0 | 2 | -0 | 11 | 3 | 8 | 5 | 4 |
|---|
| Deferred income taxes | 5 | 38 | 34 | 31 | 32 | 2 | 15 | -83 | 19 | 8 | -10 | 1 | 18 | 13 | 18 |
|---|
| Other expense (income), net | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | -1 |
|---|
| Stock-based compensation | 7 | 8 | 7 | 9 | 9 | 9 | 10 | 13 | 17 | 18 | 19 | 19 | 27 | 21 | 28 |
|---|
| Loss on early extinguishment of debt | -2 | - | -26 | - | - | - | - | -8 | -2 | -6 | - | - | -0 | -3 | -0 |
|---|
| Gain on sale of business | - | - | - | - | - | - | 17 | 31 | - | 1 | -3 | - | 9 | - | - |
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| Environmental expenditures | 10 | 11 | 11 | 19 | 20 | 20 | 12 | 13 | 10 | 19 | 12 | 16 | 14 | 29 | 28 |
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| Accounts receivable and unbilled accounts receivable | 49 | 65 | -54 | 54 | 14 | -55 | 15 | 34 | 80 | 33 | -22 | 97 | 201 | -2 | 29 |
|---|
| Inventories and supplies | - | - | 13 | 1 | 21 | -14 | 16 | 5 | 27 | 16 | 8 | 32 | 75 | 4 | 50 |
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| Other current and non-current assets | 11 | 37 | -9 | -20 | 19 | -49 | 8 | -17 | 8 | 14 | 13 | -9 | 17 | 23 | 57 |
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| Accounts payable | 39 | -8 | 6 | 37 | -52 | -16 | -4 | -11 | 47 | 7 | -80 | 108 | 74 | -27 | 12 |
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| Other current and long-term liabilities | 19 | -1 | -65 | 2 | -3 | -54 | 14 | 8 | 12 | 45 | 46 | 23 | 31 | 8 | 45 |
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| Net cash from operating activities | 224 | 180 | 324 | 416 | 297 | 396 | 260 | 286 | 373 | 413 | 431 | 546 | 626 | 735 | 778 |
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| Additions to property, plant and equipment | 116 | 149 | 197 | 280 | 258 | 257 | 219 | 167 | 193 | 216 | 196 | 242 | 345 | 422 | 432 |
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| Proceeds from sale and disposal of fixed assets | - | - | - | - | - | - | - | - | - | - | - | - | - | 10 | 9 |
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| Acquisitions, net of cash acquired | 15 | 337 | 1,374 | 63 | 16 | 94 | 207 | 49 | 151 | 29 | 9 | 1,253 | 86 | 120 | 478 |
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| Proceeds from Divestiture of Businesses | - | - | - | - | - | - | 47 | 45 | - | 5 | 8 | - | 17 | 1 | 1 |
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| Additions to intangible assets including costs to obtain or renew permits | 4 | 3 | 4 | 7 | 7 | 5 | 3 | 2 | 5 | 4 | 2 | 4 | 2 | 3 | 10 |
|---|
| Purchases of available-for-sale securities | - | - | - | - | - | - | - | - | 45 | 36 | 71 | 129 | 50 | 158 | 118 |
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| Proceeds from sale of available-for-sale securities | - | - | - | - | - | - | - | - | - | - | - | - | - | 117 | 124 |
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| Net cash used in investing activities | -126 | -480 | -1,573 | -346 | -258 | -351 | -362 | -203 | -350 | -218 | -199 | -1,508 | -389 | -575 | -904 |
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| Change in uncashed checks | -1 | 10 | -12 | 12 | 15 | -15 | -3 | -6 | 0 | -4 | 5 | -2 | 1 | 3 | -1 |
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| Tax payments related to withholdings on vested restricted stock | - | - | - | - | 3 | 2 | 3 | 3 | 3 | 7 | 5 | 11 | 9 | 14 | 14 |
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| Repurchases of common stock | 0 | 4 | 3 | 1 | 104 | 73 | 22 | 49 | 45 | 21 | 75 | 54 | 50 | 51 | 55 |
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| Deferred financing costs paid | 0 | 8 | 19 | 3 | - | - | 4 | 6 | 4 | 10 | 2 | 14 | 0 | 7 | 9 |
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| Payments on finance leases | - | - | - | - | - | - | - | - | - | 1 | 4 | 8 | 13 | 16 | 31 |
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| Proceeds from Stock Plans | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 |
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| Principal payments on debt | - | - | 520 | - | 5 | - | - | 402 | 406 | 853 | 8 | 8 | 116 | 624 | 15 |
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| Proceeds from Issuance of Debt | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 499 |
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| Proceeds from Lines of Credit | - | - | - | - | - | - | - | - | 50 | - | 150 | - | - | 114 | - |
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| Payment on revolving credit facility | - | - | - | - | - | - | - | - | 50 | - | 150 | - | - | 114 | - |
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| Net cash from (used in) financing activities | -32 | 259 | 1,218 | 13 | -94 | -90 | 220 | -73 | -111 | -53 | -89 | 898 | -187 | -209 | 377 |
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| Effect of exchange rate change on cash | - | - | - | - | - | - | - | - | - | 4 | 5 | -3 | -10 | 1 | -9 |
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| Increase (decrease) in cash and cash equivalents | - | - | - | - | - | - | - | - | - | 145 | 147 | -67 | 40 | -48 | 242 |
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| Interest paid | 27 | 31 | 42 | 76 | 75 | 74 | 89 | 93 | 89 | 61 | 73 | 73 | 106 | 115 | 153 |
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| Income Taxes Paid, Net | 56 | 49 | 13 | -8 | 42 | 53 | 29 | 19 | 20 | 27 | 53 | 65 | 79 | 132 | 131 |
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| Property, plant and equipment accrued | 8 | - | - | - | - | - | - | - | - | - | - | - | - | 52 | 44 |
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| Remedial liability assumed in acquisition of property, plant and equipment | - | - | - | - | - | - | - | - | - | - | - | - | 8 | - | - |
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