INCOME TAXES (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Mar. 31, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
|
| Effective Income Tax Rate Reconciliation [Line Items] | ||||||
| Income tax provision | $ 62 | $ 90 | $ 305 | $ 145 | ||
| Effective income tax rate reconciliation (as a percent) | 20.20% | 16.40% | 19.70% | 9.90% | ||
| Tax settlement, amount | $ 44 | |||||
| Deferred tax assets, net | $ 801 | $ 801 | $ 380 | |||
| Federal tax assets | 600 | 600 | 285 | |||
| State tax assets | 201 | 201 | $ 95 | |||
| Decrease in deferred tax asset, net | 421 | |||||
| Webster | ||||||
| Effective Income Tax Rate Reconciliation [Line Items] | ||||||
| Deferred tax assets, net | $ 419 | $ 419 | ||||
| X | ||||||||||
- Definition Deferred Tax Assets, Federal Taxes No definition available.
|
| X | ||||||||||
- Definition Increase (Decrease) In Deferred Tax Asset, Net No definition available.
|
| X | ||||||||||
- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from state taxes. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|