Financial Instruments (Currency Price Risk Management Instruments) (Details) - Forward exchange contracts - USD ($) $ in Millions |
12 Months Ended | |
---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
|
Derivative [Line Items] | ||
US$ Notional | $ 5,601.5 | $ 4,795.8 |
Years Average Maturity | 9 months 18 days | 9 months 18 days |
Designated as Hedging Instrument | Cash flow hedges | ||
Derivative [Line Items] | ||
US$ Notional | $ 4,525.0 | $ 3,465.2 |
Years Average Maturity | 8 months 12 days | 7 months 6 days |
Designated as Hedging Instrument | Net investment hedges | ||
Derivative [Line Items] | ||
US$ Notional | $ 542.2 | $ 638.0 |
Years Average Maturity | 2 years 2 months 12 days | 3 years |
Not Designated as Hedging Instrument | ||
Derivative [Line Items] | ||
US$ Notional | $ 534.3 | $ 692.6 |
Years Average Maturity | 3 months 18 days | 1 month 6 days |