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Income Taxes (Details 4)
$ in Millions, $ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
CAD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Operating Loss Carryforwards [Line Items]              
Less: Net earnings attributable to noncontrolling interests         $ 343.0 $ 259.0 $ 313.0
Liability (refund) adjustment from settlement with taxing authority $ (39.0)         (39.0)  
State income taxes, net of federal         35.0 10.0 53.0
Income taxes paid       $ 224.0      
Income tax expense (benefit)         (441.0) (285.0) (410.0)
Undistributed earnings 14.0       21.0 14.0  
State tax credits 11.0       14.0 11.0  
Increase (decrease) in capital loss carryforwards         (5.0)    
Increase (decrease) in foreign tax credit carryforwards         4.0    
Unrecognized tax benefits increase in period         58.0 8.0  
Additions for tax positions taken during prior years         53.0 7.0  
Payments for other taxes   $ 267.0 $ 363        
Unrecognized tax benefits 230.0       288.0 230.0 222.0
Increase in unrecognized tax benefits         1.0    
Additions for tax positions taken during the current year         8.0 1.0  
Reductions related to settlements with tax jurisdictions         3.0 0.0  
Interest expense and penalties related to potential income taxes         7.0 8.0 (4.0)
Deferred Tax Assets, Valuation Allowance 107.0       118.0 107.0  
Income Tax Examination, Interest Refund           36.0  
Income Tax Examination, Refund Adjustment from Settlement with Taxing Authority, Interest           3.0  
Aggregate amount of tax assessment 55.0       69.0 55.0  
Interest expense and penalties              
Interest expense and penalties related to potential income taxes         7.0 8.0 (4.0)
Accrued interest expense and penalties              
Amount recognized in consolidated balance sheets for accrued interest and penalties related to income taxes 55.0       69.0 55.0  
Other Noncurrent Liabilities              
Operating Loss Carryforwards [Line Items]              
Aggregate amount of tax assessment         58.0    
Accrued interest expense and penalties              
Amount recognized in consolidated balance sheets for accrued interest and penalties related to income taxes         58.0    
Other Assets              
Operating Loss Carryforwards [Line Items]              
Aggregate amount of tax assessment         11.0    
Accrued interest expense and penalties              
Amount recognized in consolidated balance sheets for accrued interest and penalties related to income taxes         11.0    
State Tax Authority              
Operating Loss Carryforwards [Line Items]              
Operating loss carryforwards         53.0    
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration         14.0    
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration         39.0    
Foreign Tax Jurisdiction              
Operating Loss Carryforwards [Line Items]              
Operating loss carryforwards         55.0    
Increase (decrease) in amount of valuation allowance             11.0
Deferred Tax Assets, Valuation Allowance             55.0
Foreign Tax Jurisdiction | Canada Revenue Agency              
Operating Loss Carryforwards [Line Items]              
Additions for tax positions taken during prior years             74.0
Income Tax Examination, Interest Refund 21.0            
Income Tax Examination, Refund Adjustment from Settlement with Taxing Authority, Interest 2.0            
Foreign Tax Jurisdiction | Alberta Tax and Revenue Administration              
Operating Loss Carryforwards [Line Items]              
Liability (refund) adjustment from settlement with taxing authority $ (16.0)         (16.0)  
Income Tax Examination, Interest Refund           15.0  
Income Tax Examination, Refund Adjustment from Settlement with Taxing Authority, Interest           $ 1.0  
Foreign Tax Jurisdiction | United Kingdom              
Operating Loss Carryforwards [Line Items]              
Increase (decrease) in amount of valuation allowance         (11.0)   (7.0)
Foreign Tax Jurisdiction | Canada | Capital Loss Carryforward              
Operating Loss Carryforwards [Line Items]              
Increase (decrease) in amount of valuation allowance         $ (83.0)    
State and Local Jurisdiction and Foreign Tax Authority              
Operating Loss Carryforwards [Line Items]              
Decrease resulting from prior period tax positions             $ 33.0