| Mar 31, 2018 | Mar 31, 2019 | Mar 31, 2020 | Mar 31, 2021 | Mar 31, 2022 | Mar 31, 2023 | Mar 31, 2024 | Mar 31, 2025 |
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| Net income (loss) | 1,782 | 1,262 | -5,358 | -146 | 736 | -566 | 86 | 396 |
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| Depreciation and amortization | 2,014 | 2,023 | 1,960 | 1,988 | 1,742 | 1,551 | 1,433 | 1,313 |
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| Operating right-of-use expense | - | - | 698 | 616 | 484 | 404 | 353 | 309 |
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| Pension and Other Postretirement Benefits Cost (Reversal of Cost) | -220 | 143 | -244 | 519 | -684 | 1,431 | 445 | -232 |
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| Share-based compensation | 93 | 74 | 68 | 56 | 101 | 108 | 109 | 79 |
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| Deferred taxes | - | - | - | - | - | - | -416 | -35 |
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| Loss (gain) on dispositions | -4 | 163 | -1 | 1,983 | 421 | 260 | 131 | -24 |
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| Provision for losses on accounts receivable | - | - | - | - | - | - | - | 12 |
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| Unrealized foreign currency exchange losses (gains) | -22 | -30 | -24 | 36 | 12 | -8 | 7 | -40 |
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| Impairment Losses and Contract Writeoffs | - | - | 30 | 275 | 51 | 47 | 18 | 32 |
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| Amortization of debt issuance costs and discount | -4 | -10 | -4 | 3 | - | 4 | 5 | 5 |
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| Cash surrender value in excess of premiums paid | - | -11 | -12 | -3 | -24 | -17 | -14 | -12 |
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| Other non-cash charges, net | -4 | -11 | - | -1 | -15 | -4 | -9 | -7 |
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| Decrease in receivables | -202 | 947 | -269 | -257 | -228 | -412 | -176 | -320 |
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| (Increase) Decrease in prepaid expenses and other current assets | 205 | 632 | 229 | 299 | 48 | 119 | -211 | 81 |
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| Decrease in accounts payable and accruals | -96 | -52 | -565 | -527 | -714 | -424 | -278 | -335 |
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| Increase (Decrease) in Income Taxes Payable | 303 | -107 | -197 | 434 | -315 | -161 | 13 | -57 |
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| Decrease in operating lease liability | - | - | - | - | -484 | -404 | -353 | -309 |
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| Increase (Decrease) in Deferred Revenue | 130 | -74 | -146 | -66 | 270 | 11 | -290 | -78 |
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| Other operating activities, net | 38 | -149 | -12 | 40 | -5 | 4 | 8 | - |
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| Net cash provided by operating activities | 3,243 | 1,783 | 2,350 | 124 | 1,501 | 1,415 | 1,361 | 1,398 |
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| Purchases of property and equipment | 224 | 297 | 350 | 261 | 254 | 267 | 182 | 248 |
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| Payments for transition and transformation contract costs | 328 | 394 | 281 | 261 | 209 | 223 | 198 | 135 |
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| Software purchased and developed | 211 | 261 | 235 | 254 | 295 | 188 | 225 | 328 |
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| Business dispositions | - | -65 | - | 4,947 | 533 | -147 | 26 | 26 |
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| Proceeds from sale of assets | 58 | 357 | 73 | 164 | 100 | 171 | 75 | 161 |
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| Other investing activities, net | -4 | -10 | -19 | 13 | -41 | -19 | -13 | -12 |
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| Net cash used in investing activities | -33 | 69 | -2,137 | 4,665 | -60 | -635 | -491 | -512 |
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| Borrowings of commercial paper | 2,413 | 2,747 | 4,939 | 1,486 | 1,068 | 1,514 | 1,784 | 367 |
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| Repayments of commercial paper | 2,297 | 2,840 | 5,076 | 1,852 | 905 | 1,757 | 1,887 | 369 |
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| Principal payments on long-term debt | 1,547 | 2,625 | 1,039 | 3,552 | 2,872 | 63 | - | - |
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| Payments on finance leases and borrowings for asset financing | - | - | - | - | - | - | 430 | 298 |
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| Proceeds from Issuance or Sale of Equity | 138 | 47 | 11 | 1 | 13 | 2 | - | - |
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| Taxes paid related to net share settlements of share-based compensation awards | 76 | 54 | 16 | 7 | 18 | 17 | 35 | 20 |
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| Repurchase of common stock | - | - | - | - | - | - | 898 | 14 |
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| Other financing activities, net | -28 | 47 | -45 | -21 | -79 | -6 | -21 | 17 |
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| Net cash used in financing activities | -1,890 | -1,663 | 657 | -5,476 | -1,818 | -1,507 | -1,487 | -317 |
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| Effect of exchange rate changes on cash and cash equivalents | - | -19 | -90 | 39 | 29 | -97 | -17 | 3 |
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| Net increase (decrease) in cash and cash equivalents including cash classified within current assets held for sale | - | - | - | - | - | - | -634 | 572 |
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| Net increase (decrease) in cash and cash equivalents | - | 170 | 780 | -711 | -296 | -814 | -634 | 572 |
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