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Intangible Assets - Schedule of Intangible Assets by Class (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | $ 21,685 | $ 21,249 |
Accumulated Amortization | 9,270 | 7,240 |
Net Book Value | 12,415 | 14,009 |
Customer relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 14,795 | 15,103 |
Accumulated Amortization | 6,371 | 5,112 |
Net Book Value | 8,424 | 9,991 |
Acquired software and technology |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 2,510 | 2,522 |
Accumulated Amortization | 1,234 | 901 |
Net Book Value | 1,276 | 1,621 |
Trade name |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 633 | 612 |
Accumulated Amortization | 295 | 228 |
Net Book Value | 338 | 384 |
Purchased software |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 1,146 | 1,133 |
Accumulated Amortization | 595 | 479 |
Net Book Value | 551 | 654 |
Capitalized software and other intangibles |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying Amount | 2,601 | 1,879 |
Accumulated Amortization | 775 | 520 |
Net Book Value | 1,826 | 1,359 |
Gross software development costs capitalized | $ 807 | $ 613 | $ 462

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