| Balance Sheet Details |
Balance Sheet Details Balance sheet details were as follows: Inventory | | | | | | | | | | As of | | April 30, 2018 | | October 31, 2017 | | In millions | Finished goods | $ | 1,321 |
| | $ | 1,236 |
| Purchased parts and fabricated assemblies | 1,527 |
| | 1,079 |
| Total | $ | 2,848 |
| | $ | 2,315 |
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For the six months ended April 30, 2018, the increase in inventory was due primarily to customer demand and higher component costs. Property, Plant and Equipment | | | | | | | | | | As of | | April 30, 2018 | | October 31, 2017 | | In millions | Land | $ | 309 |
| | $ | 312 |
| Buildings and leasehold improvements | 2,328 |
| | 2,371 |
| Machinery and equipment, including equipment held for lease | 9,443 |
| | 9,194 |
| | 12,080 |
| | 11,877 |
| Accumulated depreciation | (5,872 | ) | | (5,608 | ) | Total | $ | 6,208 |
| | $ | 6,269 |
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Notes Payable and Short-Term Borrowings | | | | | | | | | | As of | | April 30, 2018 | | October 31, 2017 | | In millions | Current portion of long-term debt | $ | 2,997 |
| | $ | 3,005 |
| FS commercial paper | 432 |
| | 401 |
| Notes payable to banks, lines of credit and other(1) | 426 |
| | 444 |
| Total | $ | 3,855 |
| | $ | 3,850 |
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| | (1) | Notes payable to banks, lines of credit and other includes $367 million and $390 million at April 30, 2018 and October 31, 2017, respectively, of borrowing and funding-related activity associated with FS and its subsidiaries. |
Warranties The Company's aggregate product warranty liabilities as of April 30, 2018, and changes during the six months ended April 30, 2018 were as follows: | | | | | | Six Months Ended April 30, 2018 | | In millions | Balance at beginning of period | $ | 475 |
| Accruals for warranties issued | 135 |
| Adjustments related to pre-existing warranties | (3 | ) | Settlements made | (154 | ) | Balance at end of period | $ | 453 |
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