Condensed Consolidated Statement of Changes in Shareholders' Equity Statement - USD ($) $ in Millions | Total | Reclassification out of Accumulated Other Comprehensive Income | Other expense (income), net Reclassification out of Accumulated Other Comprehensive Income | Common shares | Treasury Stock, Common | Additional paid-in capital | Retained earnings | Accumulated other comprehensive loss |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Treasury Stock, Common, Shares | | | | | (10,900,000) | | | |
Common shares, issued (in shares) | | | | 65,200,000 | | | | |
Treasury Stock, Common, Shares | | | | | (10,900,000) | | | |
Beginning shareholders' equity at Sep. 30, 2021 | $ 1,584.3 | | | $ 0.7 | $ (776.3) | $ 1,631.1 | $ 865.7 | $ (136.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net earnings | 11.2 | | | | | | 23.2 | |
Foreign currency translation adjustments | (6.9) | | | | | | | (9) |
Pension and postretirement activity, net of tax | 0.1 | | | | | | | 0.1 |
Deferred gain (loss) on hedging activity, net of tax | 0.4 | | | | | | | 1 |
Dividends declared to common shareholders | (8.2) | | | | | | (8.2) | |
Activity under share plans (shares) | | | | | 100,000 | | | |
Activity under share plans (in usd) | 7 | | | | $ 3.5 | | | |
APIC activity under share plans | | | | | | 3.5 | | |
Ending shareholders' equity at Dec. 31, 2021 | 1,515.5 | | | 0.7 | (814.6) | 1,597.2 | 883.5 | (151.3) |
Beginning shareholders' equity at Sep. 30, 2021 | 1,584.3 | | | 0.7 | (776.3) | 1,631.1 | 865.7 | (136.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net earnings | 34.4 | | | | | | 11.2 | |
Foreign currency translation adjustments | | | | | | | | (6.9) |
Pension and postretirement activity, net of tax | 0.1 | | | | | | | |
Deferred gain (loss) on hedging activity, net of tax | 1.4 | | | | | | | 0.4 |
Dividends declared to common shareholders | (8.4) | | | | | | (8.4) | |
Treasury shares repurchased (in usd) | (24.5) | | | | $ (24.5) | | | |
Treasury shares repurchased (in shares) | | | | | (500,000) | | | |
Activity under share plans (shares) | | | | | 300,000 | | | |
Activity under share plans (in usd) | (3.8) | | | | $ 33.6 | | | |
APIC activity under share plans | | | | | | (37.4) | | |
Ending shareholders' equity at Mar. 31, 2022 | 1,552.3 | | | $ 0.7 | $ (767.2) | 1,593.7 | 868.5 | (143.4) |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | | | | | | | | |
OCI Cash flow hedges reclass to earnings, before tax | | | $ 2.9 | | | | | |
Treasury Stock, Common, Shares | | | | | (12,400,000) | | | |
Common shares, issued (in shares) | | | | 65,200,000 | | | | |
Treasury Stock, Common, Shares | | | | | (12,400,000) | | | |
Beginning shareholders' equity at Dec. 31, 2021 | 1,515.5 | | | $ 0.7 | $ (814.6) | 1,597.2 | 883.5 | (151.3) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net earnings | 23.2 | | | | | | | |
Foreign currency translation adjustments | (9) | | | | | | | |
Deferred gain (loss) on hedging activity, net of tax | 1 | | | | | | | |
Treasury shares repurchased (in usd) | | | | | $ (50.9) | | | |
Treasury shares repurchased (in shares) | | | | | (1,400,000) | | | |
Ending shareholders' equity at Mar. 31, 2022 | $ 1,552.3 | | | $ 0.7 | $ (767.2) | 1,593.7 | 868.5 | (143.4) |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | | | | | | | | |
OCI Cash flow hedges reclass to earnings, before tax | | $ 1.6 | | | | | | |
Treasury Stock, Common, Shares | | | | | (11,100,000) | | | |
Common shares, issued (in shares) | | | | 65,200,000 | | | | |
Treasury Stock, Common, Shares | | | | | (11,100,000) | | | |
Treasury Stock, Common, Shares | 13,678,988 | | | | (13,700,000) | | | |
Common shares, issued (in shares) | 65,251,989 | | | 65,200,000 | | | | |
Treasury Stock, Common, Shares | 13,678,988 | | | | (13,700,000) | | | |
Beginning shareholders' equity at Sep. 30, 2022 | $ 1,459.7 | | | $ 0.7 | $ (860.9) | 1,604.3 | 931.7 | (216.1) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net earnings | 11.9 | | | | | | 19 | |
Foreign currency translation adjustments | 48 | | | | | | | 12.1 |
Pension and postretirement activity, net of tax | (0.2) | | | | | | | 4.5 |
Deferred gain (loss) on hedging activity, net of tax | (8.2) | | | | | | | 0.2 |
Dividends declared to common shareholders | (8.2) | | | | | | (8.2) | |
Treasury shares repurchased (in usd) | (15) | | | | $ (15) | | | |
Treasury shares repurchased (in shares) | | | | | (400,000) | | | |
Activity under share plans (shares) | | | | | 0 | | | |
Activity under share plans (in usd) | 7.7 | | | | $ 2.3 | | | |
APIC activity under share plans | | | | | | 5.4 | | |
Ending shareholders' equity at Dec. 31, 2022 | 1,486.7 | | | 0.7 | (863.6) | 1,583.2 | 946.4 | (159.7) |
Beginning shareholders' equity at Sep. 30, 2022 | 1,459.7 | | | 0.7 | (860.9) | 1,604.3 | 931.7 | (216.1) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net earnings | 30.9 | | | | | | (11.9) | |
Foreign currency translation adjustments | 60.1 | | | | | | | 48 |
Pension and postretirement activity, net of tax | 4.3 | | | | | | | (0.2) |
Deferred gain (loss) on hedging activity, net of tax | (8) | | | | | | | (8.2) |
Dividends declared to common shareholders | (8) | | | | | | (8) | |
Treasury shares repurchased (in usd) | $ (30) | | | | $ (15) | | | |
Treasury shares repurchased (in shares) | (800,000) | | | | (400,000) | | | |
Activity under share plans (shares) | | | | | 400,000 | | | |
Activity under share plans (in usd) | $ (1.5) | | | | $ 25 | | | |
APIC activity under share plans | | | | | | (26.5) | | |
Ending shareholders' equity at Mar. 31, 2023 | 1,507 | | | $ 0.7 | $ (850.9) | 1,577.8 | 935.6 | (176.5) |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | | | | | | | | |
OCI Cash flow hedges reclass to earnings, before tax | | | $ 5.8 | | | | | |
Treasury Stock, Common, Shares | | | | | (14,100,000) | | | |
Common shares, issued (in shares) | | | | 65,200,000 | | | | |
Treasury Stock, Common, Shares | | | | | (14,100,000) | | | |
Beginning shareholders' equity at Dec. 31, 2022 | 1,486.7 | | | $ 0.7 | $ (863.6) | 1,583.2 | 946.4 | (159.7) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net earnings | 19 | | | | | | | |
Foreign currency translation adjustments | 12.1 | | | | | | | |
Pension and postretirement activity, net of tax | 4.5 | | | | | | | |
Deferred gain (loss) on hedging activity, net of tax | 0.2 | | | | | | | |
Ending shareholders' equity at Mar. 31, 2023 | $ 1,507 | | | $ 0.7 | $ (850.9) | $ 1,577.8 | $ 935.6 | $ (176.5) |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] | | | | | | | | |
OCI Cash flow hedges reclass to earnings, before tax | | $ 0.8 | | | | | | |
Treasury Stock, Common, Shares | 14,036,144 | | | | (13,700,000) | | | |
Common shares, issued (in shares) | 65,251,989 | | | 65,200,000 | | | | |
Treasury Stock, Common, Shares | 14,036,144 | | | | (13,700,000) | | | |