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Income Taxes (Tables)
12 Months Ended
Sep. 30, 2022
Income Tax Disclosure [Abstract]  
Significant Components of Company's Income Tax Provision from Continuing Operations
The more significant components of the Company’s income tax provision from continuing operations are as follows (in millions):
 202220212020
Tax expense at Ireland statutory rate$214 $327 $113 
U.S. state income tax, net of federal benefit(23)34 
Income subject to the U.S. federal tax rate
(95)(92)
Income subject to rates different than the statutory rate125 30 99 
Reserve and valuation allowance adjustments(274)66 (70)
Intercompany intellectual property transfer— 417 — 
Restructuring and impairment costs40 (9)50 
Income tax provision (benefit)$(13)$868 $108 
Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits
A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
202220212020
Beginning balance, October 1$2,726 $2,528 $2,451 
Additions for tax positions related to the current year169 240 128 
Additions for tax positions of prior years31 33 129 
Reductions for tax positions of prior years(48)(6)(27)
Settlements with taxing authorities(7)(24)(54)
Statute closings and audit resolutions(334)(45)(99)
Ending balance, September 30$2,537 $2,726 $2,528 
Summary of Income Tax Contingencies
The following table summarizes gross tax effected unrecognized tax benefits that, if recognized, would impact the effective tax rate and the related accrued interest, net of tax benefit (in millions):

September 30,
202220212020
Gross tax effected unrecognized tax benefits$1,973 $2,268 $2,132 
Net accrued interest284 252 205 
Tax Jurisdictions and Years Currently under Audit Exam
In the U.S., fiscal years 2017 through 2018 are currently under exam by the Internal Revenue Service (“IRS”) for certain legal entities. Additionally, the Company is currently under exam in the following major non-U.S. jurisdictions for continuing operations:
 
Tax JurisdictionTax Years Covered
Belgium
2015 - 2021
Germany
2007 - 2018
Luxembourg
2017 - 2018
Mexico
2015 - 2017
United Kingdom
2014 - 2015, 2017 - 2018; 2020
Components of Provision for Income Taxes on Continuing Operations
Selected income tax data related to continuing operations were as follows (in millions):
 202220212020
Components of income (loss) from continuing operations before income taxes:
U.S. $67 $543 $(385)
Non-U.S.1,643 2,071 1,288 
Income from continuing operations before income taxes$1,710 $2,614 $903 
Components of the provision (benefit) for income taxes:
Current
U.S. federal$(219)$459 $309 
U.S. state53 108 72 
Non-U.S.294 265 264 
128 832 645 
Deferred
U.S. federal(175)(7)(382)
U.S. state(69)46 (43)
Non-U.S.103 (3)(112)
(141)36 (537)
Income tax provision (benefit)$(13)$868 $108 
Income taxes paid (refunded)$568 $504 $(386)
Deferred Taxes Classified in Consolidated Statements of Financial Position
Deferred taxes were classified in the consolidated statements of financial position as follows (in millions):
 September 30,
 20222021
Other noncurrent assets$944 $755 
Other noncurrent liabilities(500)(443)
Net deferred tax asset$444 $312 
Temporary Differences and Carryforwards in Deferred Tax Assets and Liabilities
Temporary differences and carryforwards which gave rise to deferred tax assets and liabilities included (in millions):
 
 September 30,
 20222021
Deferred tax assets
Accrued expenses and reserves$376 $407 
Employee and retiree benefits77 148 
Property, plant and equipment444 369 
Net operating loss and other credit carryforwards6,472 6,293 
Research and development52 42 
Operating lease liabilities309 334 
Other, net58 28 
7,788 7,621 
Valuation allowances(5,967)(5,853)
1,821 1,768 
Deferred tax liabilities
Subsidiaries, joint ventures and partnerships338 346 
Intangible assets730 776 
Operating lease right-of-use assets309 334 
1,377 1,456 
Net deferred tax asset$444 $312