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Equity Roll Forward (Schedule Of Change In Equity) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Jan. 01, 2019 | Oct. 01, 2018 | Sep. 30, 2018 | Jan. 01, 2018 | Oct. 01, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance |  |  | $ 8,990 |  |  |  |  |  |
Net earnings common stockholders | $ 520 | $ 482 | 985 | $ 874 |  |  |  |  |
Foreign currency translation | 88 | 148 | 53 | 155 |  |  |  |  |
Cash flow hedges | 25 | (5) | 10 | (8) |  |  |  |  |
Common stockholders' equity | 8,526 | 8,492 | 8,526 | 8,492 |  |  | $ 8,947 |  |
Other comprehensive income | 125 | 165 | 88 | 192 |  |  |  |  |
Ending balance | 8,572 | 8,537 | 8,572 | 8,537 |  |  |  |  |
Common stock |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Ending balance | 477 | 477 | 477 | 477 |  |  |  |  |
Additional paid-in-capital |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance | 375 | 306 | 348 | 297 |  |  |  |  |
Stock plans | 5 | 17 | 32 | 26 |  |  |  |  |
Ending balance | 380 | 323 | 380 | 323 |  |  |  |  |
Retained earnings |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance | 23,252 | 22,079 | 23,072 | 21,995 |  |  |  |  |
Net earnings common stockholders | 520 | 482 | 985 | 874 |  |  |  |  |
Dividends paid | (302) | (307) | (607) | (618) |  |  |  |  |
Adoption of accounting standard updates |  |  |  |  | $ 5 | $ 25 |  | $ 0 | $ 3
Ending balance | 23,475 | 22,254 | 23,475 | 22,254 |  |  |  |  |
Accumulated other comprehensive income (loss) |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance | (1,052) | (992) | (1,015) | (1,019) |  |  |  |  |
Foreign currency translation | 87 | 148 | 52 | 155 |  |  |  |  |
Pension and postretirement | 12 | 22 | 25 | 45 |  |  |  |  |
Cash flow hedges | 25 | (5) | 10 | (8) |  |  |  |  |
Ending balance | (928) | (827) | (928) | (827) |  |  |  |  |
Treasury stock |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance | (14,816) | (13,521) | (13,935) | (13,032) |  |  |  |  |
Purchases | (75) | (250) | (1,000) | (750) |  |  |  |  |
Issued under stock plans | 13 | 36 | 57 | 47 |  |  |  |  |
Ending balance | (14,878) | (13,735) | (14,878) | (13,735) |  |  |  |  |
Noncontrolling interests in subsidiaries |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Beginning balance | 40 | 39 | 43 | 52 |  |  |  |  |
Dividends paid | 0 | (1) | (5) | (16) |  |  |  |  |
Net earnings | 5 | 7 | 7 | 9 |  |  |  |  |
Other comprehensive income | 1 | 0 | 1 | 0 |  |  |  |  |
Ending balance | $ 46 | $ 45 | $ 46 | $ 45 |  |  |  |  |

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