XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.25.2

Share-Based Compensation (Tables) | 9 Months Ended
--- | ---
Jun. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Recognized Share-Based Compensation Cost | Share-based compensation cost recognized on the consolidated income statements is summarized below:
|  | Three Months Ended |  | Nine Months Ended
|  | 30 June |  | 30 June
|  | 2025 |  | 2024 |  | 2025 |  | 2024
Before-tax share-based compensation cost(A) |  | $11.0 |  |  | $17.6 |  |  | $65.8 |  |  | $46.0 |
Income tax benefit |  | (2.8) |  |  | (4.2) |  |  | (15.8) |  |  | (11.1) |
After-tax share-based compensation cost |  | $8.2 |  |  | $13.4 |  |  | $50.0 |  |  | $34.9 |
(A)Fiscal year 2025 includes noncash executive separation costs of $22.4 to accelerate vesting of share-based awards. Refer to the "Shareholder Activism-Related Costs" disclosure in Note 19, Supplemental Information, for additional information.
Schedule of Assumptions for Fair Value of Market-Based Deferred Stock Units | The calculation of the fair value of market-based deferred stock units used the following assumptions:
Expected volatility |  | 30.3 | %
Risk-free interest rate |  | 4.1 | %
Expected dividend yield |  | 2.1 | %

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of Market Based Deferred Stock Units, including, but not limited to: expected volatility, risk-free interest rate(s), and expected dividends. + References No definition available. + Details
Name: | apd_ScheduleOfShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | apd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration