| 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 |
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| Net income | - | - | - | - | - | - | - | - | - | 914 | 975 | 1,403 | 2,582 | 3,129 | 3,180 |
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| Depreciation and other amortization | - | 192 | 191 | 193 | 200 | 223 | 253 | 274 | 393 | 615 | 1,077 | 1,158 | 1,320 | 1,479 | 1,672 |
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| Amortization of acquisition-related intangible assets | - | - | - | - | - | - | - | - | - | - | - | 2,038 | 1,849 | 1,642 | 1,423 |
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| Amortization of financing costs and debt discounts | - | - | - | - | - | - | - | - | - | 127 | 47 | 52 | 43 | 41 | 43 |
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| Share-based compensation | 39 | 39 | 44 | 46 | 49 | 65 | 68 | 63 | 73 | 229 | 369 | 239 | 323 | 342 | 367 |
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| Deferred income taxes | 37 | 29 | 5 | -9 | 3 | 20 | 21 | -247 | 133 | 47 | 71 | -262 | -558 | -511 | -662 |
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| Net gain on sale of businesses and other assets | - | - | - | - | - | - | - | - | - | - | - | - | 54 | 167 | - |
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| Loss (income) from investments in unconsolidated affiliates | 14 | 18 | 11 | 80 | 91 | 32 | 147 | 32 | 10 | 29 | - | 100 | 220 | -15 | -685 |
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| Distributions from unconsolidated affiliates | - | - | - | 6 | 110 | 36 | 151 | 45 | 2 | 23 | 42 | 34 | 73 | 55 | 39 |
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| Non-cash settlement charge for terminated pension plans | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 147 |
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| Non-cash foreign currency exchange loss | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 92 |
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| Other operating activities | - | - | - | - | - | 5 | -2 | -4 | -10 | -3 | -16 | -48 | -10 | 49 | -17 |
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| Trade accounts receivable | 12 | 83 | 12 | 47 | 42 | 2 | 88 | 75 | 108 | 7 | -320 | 358 | 770 | -23 | 169 |
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| Prepaid expenses and other assets | -4 | 25 | 85 | 48 | 39 | 66 | 68 | 55 | 6 | 82 | 167 | 248 | 253 | 790 | 398 |
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| Contract costs | - | - | - | - | - | - | - | - | - | 212 | 289 | 269 | 290 | 246 | 267 |
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| Accounts payable and other liabilities | -26 | 78 | - | 37 | 168 | 148 | 178 | 54 | 116 | 238 | -146 | 303 | 511 | -54 | 426 |
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| Contract liabilities | - | - | - | - | - | - | - | - | - | 99 | 71 | 77 | 58 | 155 | 70 |
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| Net cash provided by operating activities | - | - | - | - | - | - | - | - | - | - | 4,147 | 4,034 | 4,618 | 5,162 | 6,631 |
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| Capital expenditures, including capitalized software and other intangibles | 175 | 192 | 195 | 236 | 292 | 359 | 290 | 287 | 360 | 721 | 900 | 1,160 | 1,479 | 1,388 | 1,569 |
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| Proceeds from Sales of Assets, Investing Activities | - | - | - | - | - | - | - | - | - | - | - | - | 246 | 234 | - |
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| Merchant cash advances, net | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 801 |
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| Payments for acquisition of businesses, net of cash acquired | 9 | 511 | - | 30 | - | - | 265 | 384 | 712 | 16,005 | 139 | 848 | 988 | 13 | - |
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| Distributions from unconsolidated affiliates | - | - | - | 116 | - | - | - | - | - | 113 | 109 | 115 | 138 | 136 | 60 |
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| Purchases of investments | - | - | - | - | - | - | - | - | - | 45 | 1 | 256 | 52 | 39 | 155 |
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| Proceeds from sale of investments | - | - | - | - | - | - | - | - | - | - | - | 519 | 23 | 5 | 61 |
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| Other investing activities | -19 | 4 | 3 | 2 | 1 | 2 | -2 | -7 | 7 | -5 | -11 | - | - | 3 | - |
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| Net cash used in investing activities | - | - | - | - | - | - | - | - | - | - | -341 | -1,630 | -2,112 | -1,068 | -2,404 |
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| Debt proceeds | 748 | 1,189 | 1,469 | 2,252 | 604 | 3,121 | 2,126 | 2,310 | 5,039 | 20,030 | 8,897 | 6,435 | 1,624 | 5,567 | 6,783 |
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| Debt repayments | - | - | - | - | - | - | - | - | - | 5,043 | 10,918 | 7,881 | 3,325 | 3,015 | 5,396 |
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| Proceeds from (Repayments of) Short-Term Debt | - | - | - | - | - | - | - | - | - | - | -6 | 1,741 | 1,837 | -1,456 | 278 |
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| Payments of debt financing costs | - | - | - | - | - | - | - | - | - | 247 | 16 | - | - | 38 | 28 |
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| Proceeds from issuance of treasury stock | 62 | 73 | 96 | 49 | 53 | 71 | 79 | 78 | 75 | 156 | 133 | 140 | 149 | 101 | 97 |
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| Purchases of treasury stock, including employee shares withheld for tax obligations | - | - | - | - | - | - | - | - | - | 561 | 1,826 | 2,786 | 2,677 | 4,827 | 5,837 |
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| Settlement activity, net | - | - | - | - | - | - | - | - | - | - | - | 711 | -78 | -527 | - |
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| Distributions paid to noncontrolling interests and redeemable noncontrolling interests | - | - | - | - | - | - | - | - | - | 118 | 104 | 62 | 42 | 34 | 55 |
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| Payment to acquire noncontrolling interest of consolidated subsidiary | - | - | - | - | - | - | - | - | - | - | - | - | - | 56 | - |
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| Payments of acquisition-related contingent consideration | - | - | - | - | - | - | - | - | - | - | - | 37 | 2 | 35 | 3 |
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| Other financing activities | -8 | -1 | 5 | -6 | 18 | -6 | - | - | -5 | -26 | 4 | -2 | 36 | -36 | -4 |
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| Net cash used in financing activities | - | - | - | - | - | - | - | - | - | - | -3,836 | -1,741 | -2,478 | -4,356 | -4,165 |
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| Effect of exchange rate changes on cash and cash equivalents | - | - | - | - | - | - | - | - | - | 1 | 16 | -27 | -41 | 33 | -32 |
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| Net change in cash and cash equivalents | - | - | - | - | - | - | - | - | - | - | -14 | 636 | -13 | -229 | 30 |
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