| 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 |
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| Net income (loss) | 106 | 107 | 141 | 116 | -80 | 134 | 349 | 259 | 394 | 323 | 331 | 34 | -47 | 199 |
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| Depreciation | - | - | - | - | - | - | - | - | - | 259 | 346 | 371 | 434 | 367 |
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| Cost, Amortization | - | - | - | - | - | - | - | - | - | 39 | 77 | 136 | 169 | 140 |
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| Non-cash stock-based compensation expense | - | - | - | - | - | - | - | 14 | 16 | 22 | 25 | 27 | 33 | 33 |
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| Deferred Income Taxes and Tax Credits | - | - | - | - | - | - | - | - | - | - | 52 | 10 | -141 | -34 |
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| Equity in earnings of unconsolidated affiliates, net | 0 | - | - | - | - | 4 | 21 | 24 | 27 | 30 | 34 | 29 | 31 | 30 |
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| Gains on sales and impairments of assets, net | - | - | 8 | 6 | 8 | -2 | 6 | 16 | 14 | 16 | 36 | 40 | 21 | 24 |
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| Loss on extinguishment of debt | - | - | -6 | - | - | - | - | - | - | -6 | - | - | - | -11 |
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| Non-cash interest expense, net | 8 | 9 | 11 | 7 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 6 | 6 |
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| Other non-cash items, net | - | - | - | -6 | -2 | -5 | -7 | -9 | 3 | -22 | 12 | -5 | -9 | -14 |
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| Accounts receivable | - | - | - | -164 | -362 | 246 | 417 | 335 | -113 | -87 | -149 | -6 | -45 | -30 |
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| Contract assets | - | - | - | - | - | - | - | - | - | -63 | -49 | 304 | 54 | -208 |
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| Inventories | 29 | -15 | -13 | 13 | -22 | 22 | -36 | 29 | -24 | -18 | -10 | 21 | -33 | -26 |
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| Other assets, current and long-term portion | 23 | 6 | -6 | 14 | 8 | -41 | 117 | -29 | -10 | -20 | 36 | -69 | -75 | -21 |
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| Accounts payable and accrued expenses | 73 | 76 | 73 | -87 | -162 | 66 | 54 | 252 | -228 | 94 | -104 | 192 | 166 | -162 |
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| Contract liabilities | - | - | - | - | - | - | - | - | - | 21 | 11 | -39 | 49 | 248 |
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| Other liabilities, current and long-term portion | 8 | 21 | -8 | -5 | -7 | 31 | 11 | 25 | 53 | 4 | -37 | -69 | -38 | 71 |
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| Net cash provided by operating activities | 6 | 172 | 200 | 323 | 367 | 206 | 156 | 530 | 550 | 937 | 793 | 352 | 687 | 1,122 |
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| Cash paid for acquisitions, net of cash acquired | 85 | 153 | 149 | 346 | 0 | 4 | 116 | 7 | 180 | 25 | 1,245 | 636 | 69 | 80 |
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| Capital expenditures | - | 80 | 126 | 109 | 84 | 117 | 123 | 180 | 127 | 214 | 170 | 263 | 193 | 149 |
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| Proceeds from sales of property and equipment | 6 | 7 | 16 | 17 | 14 | 11 | 20 | 39 | 35 | 37 | 65 | 81 | 84 | 66 |
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| Payments for other investments | - | - | 16 | 1 | 127 | 32 | 77 | 39 | 6 | 17 | 10 | 4 | 2 | 1 |
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| Proceeds from other investments | - | - | - | - | 69 | 1 | 24 | 5 | 15 | 1 | 1 | 0 | 0 | 2 |
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| Other investing activities, net | - | - | - | - | - | - | - | - | - | -2 | -2 | -0 | -2 | -5 |
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| Net cash used in investing activities | -147 | -128 | -263 | -439 | -129 | -141 | -273 | -182 | -262 | -217 | -1,357 | -821 | -178 | -157 |
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| Proceeds from Long-Term Lines of Credit | - | 959 | 1,149 | 2,386 | 1,702 | 1,681 | 2,699 | 3,418 | 3,026 | 1,435 | 1,503 | 4,065 | 4,378 | 4,099 |
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| Repayments of credit facilities and term loans | - | 885 | 1,250 | 1,940 | 1,742 | 1,627 | 2,457 | 3,360 | 3,127 | 1,741 | 812 | 3,241 | 4,510 | 5,253 |
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| Proceeds from Issuance of Unsecured Debt | - | - | - | - | - | - | - | - | - | 600 | - | - | - | 550 |
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| Repayments of 6.625% senior notes | - | - | 150 | - | - | - | - | - | - | 400 | - | - | - | 224 |
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| Payments of finance lease obligations | - | - | - | - | - | - | - | - | 88 | 127 | 159 | 181 | 168 | 154 |
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| Repurchases of common stock | 75 | 75 | - | - | 100 | - | 2 | 314 | 6 | 120 | - | 81 | - | - |
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| Payments of acquisition-related contingent consideration | - | - | - | - | - | - | 19 | 16 | 34 | 10 | 22 | 35 | 22 | 25 |
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| Payments for acquisition-related contingent assets | - | - | - | - | - | - | - | - | - | - | - | 18 | - | 12 |
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| Proceeds from (Payments to) Noncontrolling Interests | - | - | - | - | - | - | - | - | 1 | -1 | -9 | -1 | -14 | -33 |
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| Payments for stock-based awards | - | - | - | - | - | - | - | - | 0 | 1 | 6 | 4 | 10 | 3 |
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| Other financing activities, net | - | - | - | - | - | 0 | -6 | - | -8 | -12 | 6 | -23 | -5 | -36 |
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| Net cash (used in) provided by financing activities | -17 | -38 | 59 | 119 | -259 | -29 | 118 | -361 | -245 | -370 | 502 | 481 | -351 | -1,090 |
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| Effect of currency translation on cash | - | - | - | - | - | - | - | - | - | 1 | -0 | -2 | 1 | -4 |
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| Net (decrease) increase in cash and cash equivalents | - | - | - | - | - | - | - | - | - | 352 | -62 | 10 | 159 | -130 |
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| Interest paid | - | - | - | - | - | - | - | 81 | 85 | 65 | 62 | 106 | 238 | 195 |
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| Income Taxes Paid, Net | 28 | 59 | 80 | 77 | 3 | 59 | 79 | -21 | 106 | 65 | 69 | 9 | 10 | 44 |
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| Additions to property and equipment from finance leases and other financing arrangements | - | - | - | - | - | - | - | - | - | - | - | - | 148 | 151 |
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