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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2024
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]  
Summary Of Components Of Provision For Income Taxes From Continuing Operations
The components of our provision for income taxes are summarized as follows (in millions):

Years Ended December 31,
202420232022
Current income tax expense (benefit):
  
U.S.$11.5 $(30.3)$12.4 
Non-U.S.(16.9)34.1 22.8 
 (5.4)3.8 35.2 
Deferred income tax expense (benefit):  
U.S.(4.4)1.9 8.5 
Non-U.S.10.2 (788.3)(0.6)
 5.8 (786.4)7.9 
Total income tax expense (benefit)$0.4 $(782.6)$43.1 
Summary Of Significant Components Of Deferred Income Tax Assets (Liabilities)
The components of deferred income tax assets and liabilities are summarized as follows (in millions):
December 31,
20242023
Deferred tax assets:
 
Net operating loss carryforwards$3,071.8 $3,308.9 
Property and equipment1,555.4 1,535.1 
Interest limitation carryforwards126.0 123.4 
Foreign tax credits16.4 44.7 
Employee benefits, including share-based compensation36.6 41.6 
Premiums on long-term debt4.0 6.0 
Other17.9 14.4 
Valuation allowance(3,971.3)(4,192.4)
Total deferred tax assets856.8 881.7 
Deferred tax liabilities(26.7)(26.8)
Net deferred tax asset$830.1 $854.9 
Summary Of Effective Income Tax Rate On Continuing Operations
Our consolidated effective income tax rate for the years ended December 31, 2024, 2023 and 2022, respectively, differs from the Bermuda statutory income tax rates as follows:
Years Ended December 31,
202420232022
Bermuda statutory income tax rate
— %— %— %
Non-Bermuda taxes
25.6 74.0 22.8 
Valuation allowance(2.3)(953.6)0.6 
Resolution of prior year items
(23.2)(49.9)(7.0)
Other— — 2.8 
Effective income tax rate0.1 %(929.5)%19.2 %
Summary Of Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits A reconciliation of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2024, 2023 and 2022 (in millions) were as follows:
Years Ended December 31,
202420232022
Balance, beginning of period$201.4 $217.6 $235.1 
Settlements with taxing authorities(103.5)(41.8)(16.5)
Impact of foreign currency exchange rates(7.9)0.6 (9.7)
Increases as a result of tax positions taken during prior years
4.1 88.6 3.0 
Increases as a result of tax positions taken during the current year
2.7 13.4 11.2 
Lapse of applicable statutes of limitations(1.9)(73.6)(4.5)
Decreases as a result of tax positions taken during prior years
(1.4)(3.4)(1.0)
Balance, end of period$93.5 $201.4 $217.6