CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY/(DEFICIT) - USD ($) shares in Thousands, $ in Millions | Total | Preferred Stock | Common Stock | Additional Paid-in Capital | Retained (Losses)/Earnings | Accumulated Other Comprehensive (Loss)/Income | Treasury Stock |
Beginning Balance, Preferred Stock (in shares) at Sep. 30, 2021 | | 2,156 | | | | | |
Beginning Balance, Common Stock (in shares) at Sep. 30, 2021 | | | 66,864 | | | | |
Beginning Balance at Sep. 30, 2021 | $ 355.7 | $ 0 | $ 0.7 | $ 832 | $ (5) | $ (230.4) | $ (241.6) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Share-based payments | 1.3 | | | 1.3 | | | |
Common stock purchased | 0 | | | 15 | | | (15) |
Common stock purchased (in shares) | | | (451) | | | | |
Activity under stock plans | (2.2) | | | (8.3) | | | 6.1 |
Activity under stock plans (in shares) | | | 133 | | | | |
Dividends to common shareholders | (20.1) | | | | (20.1) | | |
Dividends to preferred shareholders | (4) | | | | | | |
Other Comprehensive Income (Loss), Net of Tax | 18.7 | | | | | 18.7 | |
Ending Balance at Dec. 31, 2021 | 409.4 | $ 0 | $ 0.7 | 840 | 30.9 | (211.7) | (250.5) |
Ending Balance, Common Stock (in shares) at Dec. 31, 2021 | | | 66,546 | | | | |
Ending Balance, Preferred Stock (in shares) at Dec. 31, 2021 | | 2,156 | | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Mandatory preferred stock dividends | | | | | (4) | | |
Net earnings | 60 | | | | 60 | | |
Beginning Balance, Preferred Stock (in shares) at Sep. 30, 2021 | | 2,156 | | | | | |
Beginning Balance, Common Stock (in shares) at Sep. 30, 2021 | | | 66,864 | | | | |
Beginning Balance at Sep. 30, 2021 | 355.7 | $ 0 | $ 0.7 | 832 | (5) | (230.4) | (241.6) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Dividends to common shareholders | (63.6) | | | | | | |
Ending Balance at Jun. 30, 2022 | 499.7 | $ 0 | $ 0.8 | 847.7 | 58.7 | (157.9) | (249.6) |
Ending Balance, Common Stock (in shares) at Jun. 30, 2022 | | | 71,254 | | | | |
Ending Balance, Preferred Stock (in shares) at Jun. 30, 2022 | | 0 | | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Mandatory preferred stock dividends | (4) | | | | | | |
Net earnings | 131.4 | | | | | | |
Beginning Balance, Preferred Stock (in shares) at Dec. 31, 2021 | | 2,156 | | | | | |
Beginning Balance, Common Stock (in shares) at Dec. 31, 2021 | | | 66,546 | | | | |
Beginning Balance at Dec. 31, 2021 | 409.4 | $ 0 | $ 0.7 | 840 | 30.9 | (211.7) | (250.5) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Share-based payments | 5.1 | | | 5.1 | | | |
Activity under stock plans | (0.1) | | | (0.7) | (0.1) | | 0.7 |
Activity under stock plans (in shares) | | | 17 | | | | |
Dividends to common shareholders | (21.9) | | | | (21.9) | | |
Other Comprehensive Income (Loss), Net of Tax | 49.7 | | | | | 49.7 | |
Ending Balance at Mar. 31, 2022 | 461.3 | $ 0 | $ 0.8 | 844.4 | 27.9 | (162) | (249.8) |
Ending Balance, Common Stock (in shares) at Mar. 31, 2022 | | | 71,250 | | | | |
Ending Balance, Preferred Stock (in shares) at Mar. 31, 2022 | | 0 | | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Net earnings | 19 | | | | 19 | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities | | (2,156) | (4,687) | | | | |
Stock Issued During Period, Value, Conversion of Convertible Securities | 0.1 | | $ 0.1 | | | | |
Share-based payments | 3.5 | | | 3.5 | | | |
Activity under stock plans | 0 | | | (0.2) | 0 | | 0.2 |
Activity under stock plans (in shares) | | | 4 | | | | |
Dividends to common shareholders | (21.6) | | | | (21.6) | | |
Other Comprehensive Income (Loss), Net of Tax | 4.1 | | | | | 4.1 | |
Ending Balance at Jun. 30, 2022 | 499.7 | $ 0 | $ 0.8 | 847.7 | 58.7 | (157.9) | (249.6) |
Ending Balance, Common Stock (in shares) at Jun. 30, 2022 | | | 71,254 | | | | |
Ending Balance, Preferred Stock (in shares) at Jun. 30, 2022 | | 0 | | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Mandatory preferred stock dividends | 0 | | | | | | |
Net earnings | 52.4 | | | | 52.4 | | |
Net earnings | 52.4 | | | | | | |
Ending Balance at Sep. 30, 2022 | 130.6 | | $ 0.8 | 828.7 | (304.7) | (145.3) | (248.9) |
Ending Balance, Common Stock (in shares) at Sep. 30, 2022 | | | 71,270 | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities | | | (4,700) | | | | |
Share-based payments | 4.6 | | | 4.6 | | | |
Activity under stock plans | (1.9) | | | (8.5) | (0.3) | | 6.9 |
Activity under stock plans (in shares) | | | 142 | | | | |
Dividends to common shareholders | (21.9) | | | (21.9) | 0 | | |
Other Comprehensive Income (Loss), Net of Tax | (29.6) | | | | | (29.6) | |
Ending Balance at Dec. 31, 2022 | 130.8 | | $ 0.8 | 802.9 | (256) | (174.9) | (242) |
Ending Balance, Common Stock (in shares) at Dec. 31, 2022 | | | 71,412 | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Net earnings | 49 | | | | 49 | | |
Beginning Balance, Common Stock (in shares) at Sep. 30, 2022 | | | 71,270 | | | | |
Beginning Balance at Sep. 30, 2022 | 130.6 | | $ 0.8 | 828.7 | (304.7) | (145.3) | (248.9) |
Ending Balance at Mar. 31, 2023 | 148.4 | | $ 0.8 | 786.4 | (216) | (183.6) | (239.2) |
Ending Balance, Common Stock (in shares) at Mar. 31, 2023 | | | 71,477 | | | | |
Beginning Balance, Common Stock (in shares) at Sep. 30, 2022 | | | 71,270 | | | | |
Beginning Balance at Sep. 30, 2022 | 130.6 | | $ 0.8 | 828.7 | (304.7) | (145.3) | (248.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Dividends to common shareholders | (65.9) | | | | | | |
Ending Balance at Jun. 30, 2023 | 166.9 | | $ 0.8 | 768.4 | (184.3) | (179.2) | (238.8) |
Ending Balance, Common Stock (in shares) at Jun. 30, 2023 | | | 71,485 | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Mandatory preferred stock dividends | 0 | | | | | | |
Net earnings | 120.8 | | | | | | |
Beginning Balance, Common Stock (in shares) at Dec. 31, 2022 | | | 71,412 | | | | |
Beginning Balance at Dec. 31, 2022 | 130.8 | | $ 0.8 | 802.9 | (256) | (174.9) | (242) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Share-based payments | 8.3 | | | 8.3 | | | |
Activity under stock plans | 0 | | | (2.8) | | | 2.8 |
Activity under stock plans (in shares) | | | 65 | | | | |
Dividends to common shareholders | (22) | | | (22) | 0 | | |
Other Comprehensive Income (Loss), Net of Tax | (8.7) | | | | | (8.7) | |
Ending Balance at Mar. 31, 2023 | 148.4 | | $ 0.8 | 786.4 | (216) | (183.6) | (239.2) |
Ending Balance, Common Stock (in shares) at Mar. 31, 2023 | | | 71,477 | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Net earnings | 40 | | | | 40 | | |
Share-based payments | 4.3 | | | 4.3 | | | |
Common stock purchased | | | | 15 | | | |
Activity under stock plans | | | | (0.3) | (0.1) | | 0.4 |
Activity under stock plans (in shares) | | | 8 | | | | |
Dividends to common shareholders | (22) | | | (22) | 0 | | |
Other Comprehensive Income (Loss), Net of Tax | 4.4 | | | | | 4.4 | |
Ending Balance at Jun. 30, 2023 | 166.9 | | $ 0.8 | $ 768.4 | (184.3) | $ (179.2) | $ (238.8) |
Ending Balance, Common Stock (in shares) at Jun. 30, 2023 | | | 71,485 | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Mandatory preferred stock dividends | 0 | | | | | | |
Net earnings | 31.8 | | | | 31.8 | | |
Net earnings | $ 31.8 | | | | $ 31.8 | | |