| Sep 30,
2017 | Sep 30,
2018 | Sep 30,
2019 | Sep 30,
2020 | Sep 30,
2021 | Sep 30,
2023 |
|---|
| Net income | 304 | 166 | 208 | 317 | 420 | 1,420 |
|---|
| Loss on extinguishment of debt | - | - | - | 19 | -36 | - |
|---|
| Income from discontinued operations | - | - | - | - | - | 1,220 |
|---|
| Depreciation and amortization | - | 54 | 61 | 66 | 92 | 89 |
|---|
| Loss on extinguishment of debt | - | - | - | 19 | -36 | - |
|---|
| Deferred income taxes | -117 | -145 | -23 | -92 | -48 | -34 |
|---|
| Depreciation and amortization | - | 54 | 61 | 66 | 92 | 89 |
|---|
| Pension contributions | 412 | 16 | 10 | 11 | 5 | - |
|---|
| Deferred income taxes | -117 | -145 | -23 | -92 | -48 | -34 |
|---|
| (Gain) loss on pension and other postretirement plan remeasurements | 68 | -38 | -69 | 22 | 72 | 42 |
|---|
| Stock-based compensation expense | 9 | 12 | 9 | 12 | 14 | 12 |
|---|
| Other, net | - | -1 | 2 | -2 | -4 | -12 |
|---|
| Receivables | 22 | 38 | 30 | 11 | 65 | -26 |
|---|
| Inventories | 35 | 4 | 10 | 1 | 53 | 3 |
|---|
| Payables and accrued liabilities | - | -2 | 37 | -3 | 95 | 111 |
|---|
| Other assets and liabilities | 64 | 35 | 27 | 81 | 110 | 86 |
|---|
| Operating cash flows from continuing operations | - | - | - | - | - | 353 |
|---|
| Operating cash flows from discontinued operations | - | - | - | - | - | -394 |
|---|
| Total cash (used in) provided by operating activities | -130 | 320 | 325 | 372 | 404 | -41 |
|---|
| Additions to property, plant and equipment | 68 | 93 | 108 | 151 | 144 | 181 |
|---|
| Notes receivable, net of repayments of $3 million in 2020 | - | - | - | -31 | -17 | - |
|---|
| Acquisitions of businesses | 68 | 125 | 78 | 40 | 282 | 36 |
|---|
| Acquisitions of businesses | 68 | 125 | 78 | 40 | 282 | 36 |
|---|
| Purchases of investments | - | - | - | - | - | 440 |
|---|
| Other investing activities, net | - | -5 | 2 | - | -9 | - |
|---|
| Proceeds from maturities of short-term investments | - | - | - | - | - | 80 |
|---|
| Total cash provided by (used in) investing activities | -135 | -213 | -188 | -222 | -400 | 2,044 |
|---|
| Other investing activities, net | - | -5 | 2 | - | -9 | - |
|---|
| Investing cash flows from continuing operations | - | - | - | - | - | -577 |
|---|
| Investing cash flows from discontinued operations | - | - | - | - | - | 2,621 |
|---|
| Total cash provided by (used in) investing activities | -135 | -213 | -188 | -222 | -400 | 2,044 |
|---|
| Proceeds from Issuance of Debt | - | - | - | 1,558 | 555 | 921 |
|---|
| Payments of debt issuance costs and discounts | - | - | - | 16 | 7 | - |
|---|
| Repayments on borrowings | - | 108 | 734 | 929 | 829 | 921 |
|---|
| Repayments on borrowings | - | 108 | 734 | 929 | 829 | 921 |
|---|
| Premium paid to extinguish debt | - | - | - | 15 | 26 | - |
|---|
| Premium paid to extinguish debt | - | - | - | 15 | 26 | - |
|---|
| Repurchases of common stock | 50 | 325 | - | 60 | 127 | 1,525 |
|---|
| Repurchases of common stock | 50 | 325 | - | 60 | 127 | 1,525 |
|---|
| Cash dividends paid | 40 | 58 | 80 | 84 | 91 | 22 |
|---|
| Cash dividends paid | 40 | 58 | 80 | 84 | 91 | 22 |
|---|
| Other financing activities | - | -7 | -6 | -4 | -11 | -19 |
|---|
| Other financing activities | - | -7 | -6 | -4 | -11 | -19 |
|---|
| Financing cash flows from continuing operations | - | - | - | - | - | -1,565 |
|---|
| Total cash used in financing activities | 295 | -209 | -71 | 450 | -536 | -1,674 |
|---|
| Financing cash flows from discontinued operations | - | - | - | - | - | -108 |
|---|
| Total cash used in financing activities | 295 | -209 | -71 | 450 | -536 | -1,674 |
|---|
| Effect of currency exchange rate changes on cash, cash equivalents and restricted cash | - | - | -3 | 2 | 2 | -0 |
|---|
| Increase (decrease) in cash, cash equivalents and restricted cash | - | - | 63 | 602 | -530 | 329 |
|---|
| Interest paid | - | 53 | 67 | 65 | 62 | 70 |
|---|
| Income taxes paid | - | - | - | - | 72 | 374 |
|---|