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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY/(DEFICIT) - USD ($) $ in Millions | Total | Common Stock | Preferred Stock | Preferred Stock | Preferred Stock Preferred Stock | Common Stock | Common Stock Common Stock | Additional Paid-in Capital | Additional Paid-in Capital Common Stock | Additional Paid-in Capital Preferred Stock | Retained Earnings | Treasury Stock | Accumulated Other Comprehensive (Loss)/Income
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dividends per common share (in dollars per share) | $ 0.29 |  |  |  |  |  |  |  |  |  |  |  |
Beginning Balance at Sep. 30, 2017 | $ 85.1 |  |  |  |  | $ 0.6 |  | $ 196.7 |  |  | $ 198.7 | $ (72.1) | $ (238.8)
Beginning Balance (in shares) at Sep. 30, 2017 |  |  |  |  |  | 60,709,000 |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss)/earnings | 60.4 |  |  |  |  |  |  |  |  |  | 60.4 |  |
Share based payments | 6.7 |  |  |  |  |  |  | 6.7 |  |  |  |  |
Activity under stock plans | (1.8) |  |  |  |  |  |  | (4.8) |  |  | (0.8) | 3.8 |
Activity under stock plans (in shares) |  |  |  |  |  | 91,000 |  |  |  |  |  |  |
Dividends to shareholders ($0.30 per share) | (18.7) |  |  |  |  |  |  |  |  |  | (18.7) |  |
Other comprehensive loss | 11.1 |  |  |  |  |  |  |  |  |  |  |  | 11.1
Common stock purchased | (50.0) |  |  |  |  |  |  |  |  |  |  | (50.0) |
Common stock purchased (in shares) |  |  |  |  |  | (1,126,000) |  |  |  |  |  |  |
Ending Balance at Dec. 31, 2017 | 33.6 |  |  |  |  | $ 0.6 |  | 198.6 |  |  | 180.4 | (118.3) | (227.7)
Ending Balance (in shares) at Dec. 31, 2017 |  |  |  |  |  | 59,674,000 |  |  |  |  |  |  |
Beginning Balance at Sep. 30, 2017 | 85.1 |  |  |  |  | $ 0.6 |  | 196.7 |  |  | 198.7 | (72.1) | (238.8)
Beginning Balance (in shares) at Sep. 30, 2017 |  |  |  |  |  | 60,709,000 |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends to common shareholders ($0.30 per share) | 0.0 |  |  |  |  |  |  |  |  |  |  |  |
Net earnings from continuing operations | 92.0 |  |  |  |  |  |  |  |  |  |  |  |
Loss from discontinued operations, net of tax | 0.0 |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchased | $ (50.0) |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchased (in shares) | (1,126,379) |  |  |  |  |  |  |  |  |  |  |  |
Ending Balance at Jun. 30, 2018 | $ 47.8 |  |  |  |  | $ 0.6 |  | 224.4 |  |  | 196.4 | (117.7) | (255.9)
Ending Balance (in shares) at Jun. 30, 2018 |  |  |  |  |  | 59,686,000 |  |  |  |  |  |  |
Dividends per common share (in dollars per share) | $ 0.29 |  |  |  |  |  |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2017 | $ 33.6 |  |  |  |  | $ 0.6 |  | 198.6 |  |  | 180.4 | (118.3) | (227.7)
Beginning Balance (in shares) at Dec. 31, 2017 |  |  |  |  |  | 59,674,000 |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss)/earnings | 7.8 |  |  |  |  |  |  |  |  |  | 7.8 |  |
Share based payments | 7.3 |  |  |  |  |  |  | 7.3 |  |  |  |  |
Activity under stock plans | 0.1 |  |  |  |  |  |  | (0.5) |  |  |  | 0.6 |
Activity under stock plans (in shares) |  |  |  |  |  | 12,000 |  |  |  |  |  |  |
Dividends to shareholders ($0.30 per share) | (17.8) |  |  |  |  |  |  |  |  |  | (17.8) |  |
Other comprehensive loss | 13.7 |  |  |  |  |  |  |  |  |  |  |  | 13.7
Ending Balance at Mar. 31, 2018 | $ 44.7 |  |  |  |  | $ 0.6 |  | 205.4 |  |  | 190.5 | (117.7) | (234.1)
Ending Balance (in shares) at Mar. 31, 2018 |  |  |  |  |  | 59,686,000 |  |  |  |  |  |  |
Dividends per common share (in dollars per share) | $ 0.29 |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss)/earnings | $ 23.8 |  |  |  |  |  |  |  |  |  | 23.8 |  |
Share based payments | 7.0 |  |  |  |  |  |  | 7.0 |  |  |  |  |
Activity under stock plans | 12.0 |  |  |  |  |  |  | 12.0 |  |  |  |  |
Dividends to shareholders ($0.30 per share) | (17.9) |  |  |  |  |  |  |  |  |  | (17.9) |  |
Other comprehensive loss | (21.8) |  |  |  |  |  |  |  |  |  |  |  | (21.8)
Net earnings from continuing operations | 23.8 |  |  |  |  |  |  |  |  |  |  |  |
Loss from discontinued operations, net of tax | 0.0 |  |  |  |  |  |  |  |  |  |  |  |
Ending Balance at Jun. 30, 2018 | $ 47.8 |  |  |  |  | $ 0.6 |  | 224.4 |  |  | 196.4 | (117.7) | (255.9)
Ending Balance (in shares) at Jun. 30, 2018 |  |  |  |  |  | 59,686,000 |  |  |  |  |  |  |
Dividends per common share (in dollars per share) | $ 0.30 |  |  |  |  |  |  |  |  |  |  |  |
Beginning Balance at Sep. 30, 2018 | $ 24.5 |  |  |  |  | $ 0.6 |  | 217.8 |  |  | 177.3 | (129.4) | (241.8)
Beginning Balance (in shares) at Sep. 30, 2018 |  |  |  |  |  | 59,608,000 |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss)/earnings | 70.8 |  |  |  |  |  |  |  |  |  | 70.8 |  |
Share based payments | 6.5 |  |  |  |  |  |  | 6.5 |  |  |  |  |
Activity under stock plans | (7.1) |  |  |  |  |  |  | (16.1) |  |  | (3.6) | 12.6 |
Activity under stock plans (in shares) |  |  |  |  |  | 290,000 |  |  |  |  |  |  |
Dividends to shareholders ($0.30 per share) | (18.4) |  |  |  |  |  |  |  |  |  | (18.4) |  |
Other comprehensive loss | (5.9) |  |  |  |  |  |  |  |  |  |  |  | (5.9)
Ending Balance at Dec. 31, 2018 | $ 70.4 |  |  |  |  | $ 0.6 |  | 208.2 |  |  | 226.1 | (116.8) | (247.7)
Ending Balance (in shares) at Dec. 31, 2018 |  |  |  |  |  | 59,898,000 |  |  |  |  |  |  |
Preferred stock dividend declared (in dollars per share) | $ 7,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Beginning Balance at Sep. 30, 2018 | $ 24.5 |  |  |  |  | $ 0.6 |  | 217.8 |  |  | 177.3 | (129.4) | (241.8)
Beginning Balance (in shares) at Sep. 30, 2018 |  |  |  |  |  | 59,608,000 |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends to common shareholders ($0.30 per share) | (4.0) |  |  |  |  |  |  |  |  |  |  |  |
Net earnings from continuing operations | 17.7 |  |  |  |  |  |  |  |  |  |  |  |
Loss from discontinued operations, net of tax | (12.8) |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchased | $ (45.0) |  |  |  |  |  |  |  |  |  |  |  |
Common stock purchased (in shares) | (1,036,000) |  |  |  |  |  |  |  |  |  |  |  |
Ending Balance at Jun. 30, 2019 | $ 570.7 |  |  |  |  | $ 0.7 |  | 867.2 |  |  | 109.5 | (161.4) | (245.3)
Ending Balance (in shares) at Jun. 30, 2019 |  |  |  |  |  | 68,840,000 |  |  |  |  |  |  |
Dividends per common share (in dollars per share) | $ 0.30 |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividend declared (in dollars per share) | $ 1.83 |  |  |  |  |  |  |  |  |  |  |  |
Beginning Balance at Dec. 31, 2018 | $ 70.4 |  |  |  |  | $ 0.6 |  | 208.2 |  |  | 226.1 | (116.8) | (247.7)
Beginning Balance (in shares) at Dec. 31, 2018 |  |  |  |  |  | 59,898,000 |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Share based payments | 7.6 |  |  |  |  |  |  | 7.6 |  |  |  |  |
Activity under stock plans | 0.0 |  |  |  |  |  |  | (0.5) |  |  |  | 0.5 |
Activity under stock plans (in shares) |  |  |  |  |  | 11,000 |  |  |  |  |  |  |
Dividends to shareholders ($0.30 per share) | (21.6) |  |  |  |  |  |  |  |  |  | (21.6) |  |
Dividends to common shareholders ($0.30 per share) | (3.3) |  |  |  |  |  |  |  |  |  | (3.3) |  |
Other comprehensive loss | 20.2 |  |  |  |  |  |  |  |  |  |  |  | 20.2
Net earnings from continuing operations | (62.3) |  |  |  |  |  |  |  |  |  | (62.3) |  |
Loss from discontinued operations, net of tax | (11.0) |  |  |  |  |  |  |  |  |  | (11.0) |  |
Issuance of stock |  | $ 445.8 | $ 199.5 |  |  |  | $ 0.1 |  | $ 445.7 | $ 199.5 |  |  |
Issuance of stock (in shares) |  |  |  |  | 2,156,000 |  | 9,966,000 |  |  |  |  |  |
Ending Balance at Mar. 31, 2019 | $ 645.3 |  |  |  |  | $ 0.7 |  | 860.5 |  |  | 127.9 | (116.3) | (227.5)
Ending Balance (in shares) at Mar. 31, 2019 |  |  |  |  |  | 69,875,000 |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Outstanding |  |  |  | 2,156,000 |  |  |  |  |  |  |  |  |
Dividends per common share (in dollars per share) | $ 0.30 |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividend declared (in dollars per share) | $ 1.875 |  |  |  |  |  |  |  |  |  |  |  |
Net (loss)/earnings | $ 9.2 |  |  |  |  |  |  |  |  |  | 9.2 |  |
Share based payments | 6.7 |  |  |  |  |  |  | 6.7 |  |  |  |  |
Activity under stock plans | (0.1) |  |  |  |  |  |  |  |  |  |  | (0.1) |
Activity under stock plans (in shares) |  |  |  |  |  | 1,000 |  |  |  |  |  |  |
Dividends to shareholders ($0.30 per share) | (21.4) |  |  |  |  |  |  |  |  |  | (21.4) |  |
Dividends to common shareholders ($0.30 per share) | (4.4) |  |  |  |  |  |  |  |  |  | (4.4) |  |
Other comprehensive loss | (17.8) |  |  |  |  |  |  |  |  |  |  |  | (17.8)
Net earnings from continuing operations | 9.2 |  |  |  |  |  |  |  |  |  |  |  |
Loss from discontinued operations, net of tax | (1.8) |  |  |  |  |  |  |  |  |  | (1.8) |  |
Common stock purchased | (45.0) |  |  |  |  |  |  |  |  |  |  | (45.0) |
Common stock purchased (in shares) |  |  |  |  |  | (1,036,000) |  |  |  |  |  |  |
Ending Balance at Jun. 30, 2019 | $ 570.7 |  |  |  |  | $ 0.7 |  | $ 867.2 |  |  | $ 109.5 | $ (161.4) | $ (245.3)
Ending Balance (in shares) at Jun. 30, 2019 |  |  |  |  |  | 68,840,000 |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Outstanding |  |  |  | 2,156,000 |  |  |  |  |  |  |  |  |

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