| 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 | - | - | - | - | - | - | - | - | - | 376 | 333 | 153 | 505 | 612 | 791 |
|---|
| Depreciation and amortization | - | - | - | - | - | - | - | - | - | - | - | 315 | 570 | 586 | 489 |
|---|
| Impairment, Operating Right-Of-Use Assets And Related Property, Plant And Equipment | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 16 |
|---|
| Operating Lease, Right-of-Use Asset, Periodic Reduction | - | - | - | - | - | - | - | - | - | - | 28 | 45 | 45 | 42 | 40 |
|---|
| Loss on equity method investments | - | - | - | - | - | - | - | - | - | - | -0 | -2 | -3 | -0 | - |
|---|
| Acquisition-related gain | - | - | - | - | - | - | - | - | - | - | - | - | - | 6 | - |
|---|
| Amortization of Debt Issuance Costs | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 13 | 18 | 16 | 24 |
|---|
| Stock compensation expense | 7 | 9 | 12 | 14 | 23 | 33 | 40 | 31 | 32 | 27 | 26 | 134 | 71 | 56 | 46 |
|---|
| Deferred tax benefit | - | - | - | -11 | -8 | 3 | 2 | 11 | 2 | -2 | 1 | -61 | -125 | -85 | -101 |
|---|
| Unrealized foreign exchange movements | - | - | - | - | - | - | - | - | - | - | - | 6 | 13 | -20 | -7 |
|---|
| Other non-cash items | - | - | - | - | - | - | - | - | - | - | - | -4 | -11 | -24 | -32 |
|---|
| Accounts receivable | -18 | 32 | 79 | 38 | 7 | 19 | -3 | -58 | 38 | 102 | 175 | -114 | 421 | 83 | -349 |
|---|
| Unbilled revenue | - | - | - | - | - | - | - | - | - | 56 | 6 | 18 | 333 | -5 | 340 |
|---|
| Unearned revenue | - | - | - | - | - | - | - | - | -6 | 87 | 292 | -69 | 193 | 135 | -38 |
|---|
| Other net assets | -14 | 20 | 17 | 43 | 15 | -26 | -45 | 7 | 2 | 20 | 15 | 108 | 10 | -171 | -28 |
|---|
| Net cash provided by operating activities | 87 | 20 | 113 | 221 | 170 | - | - | 383 | 269 | 413 | 568 | 829 | 563 | 1,161 | 1,287 |
|---|
| Purchase of property, plant and equipment | 31 | 35 | 31 | 29 | 33 | 50 | 43 | 45 | 48 | 51 | 51 | 94 | 142 | 141 | 168 |
|---|
| Purchase of subsidiary undertakings (net of cash acquired) | - | 70 | 73 | 94 | 124 | 166 | 54 | 144 | 2 | 131 | 48 | 5,914 | - | 72 | 84 |
|---|
| Proceeds from investments in equity | - | - | - | - | - | - | - | - | - | - | - | - | 2 | - | 3 |
|---|
| Purchase of investments in equity | - | - | - | - | - | - | - | - | 6 | 10 | 13 | 17 | 6 | 14 | 17 |
|---|
| Net cash used in investing activities | 15 | -152 | -121 | -184 | -112 | - | - | -178 | -37 | -162 | -47 | -6,024 | -146 | -227 | -267 |
|---|
| New Notes issue costs | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 13 |
|---|
| Proceeds from Lines of Credit | - | - | 20 | - | - | 852 | 73 | - | - | - | 350 | 5,905 | 75 | 370 | 2,317 |
|---|
| Repayment of credit lines and loan facilities | - | - | 20 | - | - | 502 | 73 | - | - | - | 350 | 878 | 875 | 1,265 | 2,678 |
|---|
| Proceeds from Stock Options Exercised | 13 | 5 | 13 | 27 | 22 | 21 | 10 | 14 | 17 | 22 | 13 | 119 | 36 | 51 | 36 |
|---|
| Share issue costs | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
|---|
| Repurchase of ordinary shares | - | 9 | 16 | - | 140 | 458 | 110 | 133 | 129 | 147 | 175 | - | 100 | - | 500 |
|---|
| Share repurchase costs | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 |
|---|
| Net cash used in financing activities | 15 | -4 | -1 | 29 | -116 | - | - | -119 | -113 | -125 | -208 | 5,115 | -864 | -844 | -837 |
|---|
| Effect of exchange rate movements on cash | - | - | - | - | - | - | - | - | - | -1 | 7 | -8 | -17 | -1 | -22 |
|---|
| Net increase/(decrease) in cash and cash equivalents | - | - | - | - | - | - | - | - | - | 124 | 320 | -88 | -463 | 89 | 161 |
|---|