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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2025
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information Supplemental Cash Flow Information
The following provides additional information relating to cash flow activities:
 Year ended December 31,
 202520242023
 (in millions)
Cash paid during the year for:   
Interest—net of interest capitalized$137 $118 $145 
Income taxes—net of refunds:
U.S. federal$252 $336 $263 
U.S. state and local:
Illinois**22 
Other38 47 52 
Total U.S. state and local38 47 74 
Foreign:
Canada23 24 32 
Other8 3 4 
Total foreign31 27 36 
Total income taxes—net of refunds$321 $410 $373 
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*    For the years ended December 31, 2025 and 2024, amounts for this jurisdiction were below the threshold for separate disclosure. As such, these amounts are reflected in Other.
Interest—net of interest capitalized for the year ended December 31, 2024 includes a reduction of approximately $21 million reflecting interest relief received from the CRA related to certain tax years from 2006 through 2011. See Note 10—Income Taxes for additional information.
 Year ended December 31,
 202520242023
 (in millions)
Supplemental disclosure of noncash investing and financing activities:
Change in capitalized expenditures in accounts payable, accrued expenses and other liabilities$17 $33 $15 
Change in accrued share repurchases, including accrued excise taxes(12)19 5