| Current Federal Tax Expense (Benefit) | 0 | 2025-01-01 → 2025-12-31 |
| Current State and Local Tax Expense (Benefit) | -1.00M | 2025-01-01 → 2025-12-31 |
| Accrual for Environmental Loss Contingencies | 90.00M | as of 2025-12-31 |
| Current Foreign Tax Expense (Benefit) | 51.00M | 2025-01-01 → 2025-12-31 |
| Accrual for Environmental Loss Contingencies, Charges to Expense for New Losses | 29.00M | 2025-01-01 → 2025-12-31 |
| Current Income Tax Expense (Benefit) | 50.00M | 2025-01-01 → 2025-12-31 |
| Accrual for Environmental Loss Contingencies, Payments | 20.00M | 2025-01-01 → 2025-12-31 |
| Deferred Federal Income Tax Expense (Benefit) | -110.00M | 2025-01-01 → 2025-12-31 |
| Deferred State and Local Income Tax Expense (Benefit) | -5.00M | 2025-01-01 → 2025-12-31 |
| Deferred Foreign Income Tax Expense (Benefit) | 1.00M | 2025-01-01 → 2025-12-31 |
| Operating Lease, Liability, Current | 19.00M | as of 2025-12-31 |
| Other Accrued Liabilities, Current | 55.00M | as of 2025-12-31 |
| Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 55.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | -6.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount | -10.00M | 2025-01-01 → 2025-12-31 |
| Share-based Payment Arrangement, Exercise of Option, Tax Benefit | 5.00M | 2025-01-01 → 2025-12-31 |
| Long-term Debt, Fair Value | 5.59B | as of 2025-12-31 |
| Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | 54.00M | as of 2025-12-31 |
| Letters of Credit Outstanding, Amount | 33.00M | as of 2025-12-31 |
| Compensating Balance, Amount | 3.00M | as of 2025-12-31 |
| Property, Plant and Equipment, Additions | 474.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount | 3.00M | 2025-01-01 → 2025-12-31 |
| Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent | 485.00M | as of 2025-12-31 |
| SegmentReportingOtherItemAmount | -53.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount | 136.00M | 2025-01-01 → 2025-12-31 |
| Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount | -1.00M | 2025-01-01 → 2025-12-31 |
| Long-Lived Assets | 14.51B | as of 2025-12-31 |
| Deferred Tax Assets, Operating Loss Carryforwards | 155.00M | as of 2025-12-31 |
| Deferred Tax Assets, Tax Credit Carryforwards | 48.00M | as of 2025-12-31 |
| Operating Lease, Cost | 25.00M | 2025-01-01 → 2025-12-31 |
| Lease, Cost | 31.00M | 2025-01-01 → 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Finance Lease Liability | 16.00M | 2025-01-01 → 2025-12-31 |
| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 4.00M | 2025-01-01 → 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year One | 6.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Two | 6.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Three | 5.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Four | 3.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, Year Five | 1.00M | as of 2025-12-31 |
| Finance Lease, Liability, to be Paid, after Year Five | 0 | as of 2025-12-31 |
| Finance Lease, Liability, Payment, Due | 21.00M | as of 2025-12-31 |
| Finance Lease, Liability, Undiscounted Excess Amount | 1.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year One | 24.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Two | 21.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Three | 19.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Four | 17.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, Year Five | 17.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid, after Year Five | 64.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, to be Paid | 162.00M | as of 2025-12-31 |
| Deferred Tax Assets, Other | 118.00M | as of 2025-12-31 |
| Deferred Tax Assets, Gross | 471.00M | as of 2025-12-31 |
| Deferred Tax Assets, Valuation Allowance | 81.00M | as of 2025-12-31 |
| Deferred Tax Assets, Net of Valuation Allowance | 390.00M | as of 2025-12-31 |
| Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 35.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Gross | 311.00M | as of 2025-12-31 |
| Long-term Debt, Gross | 5.61B | as of 2025-12-31 |
| Deferred Tax Liabilities, Property, Plant and Equipment | 289.00M | as of 2025-12-31 |
| Deferred Tax Liabilities, Other | 22.00M | as of 2025-12-31 |
| Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation | 1.60B | as of 2025-12-31 |
| Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets | 1.20B | as of 2025-12-31 |
| Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation | 1.60B | as of 2025-12-31 |
| Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets | 1.20B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year One | 522.00M | as of 2025-12-31 |
| Defined Contribution Plan, Cost | 38.00M | 2025-01-01 → 2025-12-31 |
| Long-Term Debt, Maturity, Year Two | 300.00M | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Three | 1.05B | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Four | 750.00M | as of 2025-12-31 |
| Long-Term Debt, Maturity, Year Five | 1.05B | as of 2025-12-31 |
| Long-Term Debt, Maturity, after Year Five | 1.94B | as of 2025-12-31 |
| Debt Instrument, Unamortized Discount (Premium), Net | 26.00M | as of 2025-12-31 |
| Income Taxes Receivable, Current | 10.00M | as of 2025-12-31 |
| Pension and Other Postretirement Benefits Cost (Reversal of Cost) | 239.00M | 2025-01-01 → 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Domestic | 80.00M | 2025-01-01 → 2025-12-31 |
| Income (Loss) from Continuing Operations before Income Taxes, Foreign | 180.00M | 2025-01-01 → 2025-12-31 |