Business Segment and Geographic Information (Reconciliation of Operating Income) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||||
---|---|---|---|---|---|---|
May 01, 2019 |
Mar. 31, 2021 |
Dec. 31, 2018 |
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
Segment Reporting Information [Line Items] | ||||||
Facility closure | $ (23.2) | $ (29.0) | $ (23.2) | $ 0.0 | $ (29.0) | |
Cost reduction actions | 0.0 | 0.0 | (25.5) | |||
Gain on exchange with joint venture partner | $ 29.1 | 36.8 | 0.0 | 29.1 | ||
Company headquarters relocation income (expense) | 0.0 | 33.8 | 0.0 | |||
Operating income | 2,281.4 | 2,237.6 | 2,144.4 | |||
Segment Reconciling Items | ||||||
Segment Reporting Information [Line Items] | ||||||
Facility closure | (23.2) | 0.0 | (29.0) | |||
Cost reduction actions | 0.0 | 0.0 | (25.5) | |||
Gain on exchange with joint venture partner | 36.8 | 0.0 | 29.1 | |||
Company headquarters relocation income (expense) | 0.0 | 33.8 | 0.0 | |||
Segment Total | ||||||
Segment Reporting Information [Line Items] | ||||||
Operating income | $ 2,267.8 | $ 2,203.8 | $ 2,169.8 |