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Shareholders Equity
 3 Months Ended
Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]  
Shareholders' Equity and Share-based Payments [Text Block] Shareholders' Equity
Activity in our various shareholders' equity accounts for the three months ended March 31, 2023 and 2022 were as follows (in millions):

 Shares Par ValueAdditional
Paid-in
Capital		WarrantsRetained EarningsAOCI Non-controlling
Interest
BALANCE, December 31, 202275.2 $0.8 $1,097.9 $16.4 $160.1 $14.7 $8.0 
Net income— — — — 46.7 — 1.9 
Share-based compensation cost— — 5.7 — — — — 
Net changes in Pension and other postretirement benefits— — — — — (0.1)— 
Net other comprehensive loss— — — — — (0.1)— 
BALANCE, March 31, 202375.2 $0.8 $1,103.6 $16.4 $206.8 $14.5 $9.9 

 Shares Par ValueAdditional
Paid-in
Capital		WarrantsRetained
Deficit		AOCI Non-controlling
Interest
BALANCE, December 31, 202175.0 $0.8 $1,083.0 $16.4 $(16.4)$(9.1)$2.7 
Net loss— — — — (38.6)— (1.2)
Share-based compensation cost— — 3.4 — — — — 
Net other comprehensive loss— — — — — (0.3)— 
BALANCE, March 31, 202275.0 $0.8 $1,086.4 $16.4 $(55.0)$(9.4)$1.5 

Share Repurchase Program

In 2022, our board of directors authorized a share repurchase program under which we may purchase up to $100.0 million of our outstanding Common Shares. In April 2023, the board of directors authorized an increase of this amount to $300.0 million. The share repurchase program does not have a fixed expiration, and may be modified, suspended or discontinued at any time. We did not repurchase any Common Shares during the three months ended March 31, 2023 under the repurchase program.