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Label Element Value
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest $ 2,176,231,000
Revision of Prior Period, Adjustment [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest (1,686,000)
Contributed Surplus [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 200,000,000 [1]
Retained Earnings [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest (501,423,000)
Retained Earnings [Member] | Revision of Prior Period, Adjustment [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 38,175,000
Noncontrolling Interest [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 447,267,000
Common Stock [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 108,223,000
AOCI Attributable to Parent [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest (10,834,000) [2]
Treasury Stock [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 0
Additional Paid-in Capital [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 1,932,998,000
Additional Paid-in Capital [Member] | Revision of Prior Period, Adjustment [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest (39,861,000)
Parent [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest 1,728,964,000
Parent [Member] | Revision of Prior Period, Adjustment [Member]  
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest $ (1,686,000)
[1] Contributed Surplus is 'capital' that can be returned to shareholders without the need to reduce share capital, thereby giving us greater flexibility when it comes to declaring dividends.
[2] As at September 30, 2022, and 2021, our other comprehensive loss consisted of a gain of $0.1 million and $0.1 million of pension and post-retirement benefit plan adjustments and $nil and $3.1 million loss of our share of affiliates comprehensive loss from discontinued operations, respectively.