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INCOME TAXES (Tables)
 12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Schedule of Components of Earnings from Continuing Operations before Income Taxes
The components of earnings (loss) from continuing operations before income taxes and the provision for (benefit from) income taxes from continuing operations were as follows:
 Years ended December 31,
 202020192018
 (In thousands)
Earnings (loss) from continuing operations before income taxes:
United States$(126,537)$(44,668)$371,925 
Foreign(3,823)2,397 17,544 
Total$(130,360)$(42,271)$389,469 
Provision for (benefit from) income taxes from continuing operations:
Current tax expense (benefit) from continuing operations:
Federal (1)
$(642)$(1,065)$(23,333)
State9,523 9,187 6,862 
Foreign5,620 5,210 10,123 
14,501 13,332 (6,348)
Deferred tax expense (benefit) from continuing operations:
Federal(27,534)(8,228)113,764 
State(10,263)(18,790)1,250 
Foreign4,932 (5,313)(6,119)
(32,865)(32,331)108,895 
Total$(18,364)$(18,999)$102,547 
_______________
(1) The current federal tax benefit in 2018 included $22 million of alternative minimum tax refunds generated by the 2017 Tax Cuts and Jobs Act.
Schedule of Reconciliation of Federal Statutory Tax Rate with Effective Tax Rate from Continuing Operations
A reconciliation of the federal statutory tax rate with the effective tax rate from continuing operations follows:
 Years ended December 31,
 202020192018
 (Percentage of pre-tax earnings)
 Federal statutory tax rate 21.0 %21.0 %21.0 %
 Impact of one-time deemed repatriation — %— %6.2 %
 Impact on deferred taxes for changes in tax rates 0.9 %20.5 %(3.3)%
 Additional deferred tax adjustments 0.8 %— %(1.5)%
 State income taxes, net of federal income tax benefit (3.4)%(19.2)%3.7 %
 Foreign rates varying from federal statutory tax rate 1.3 %3.1 %0.1 %
 Tax contingencies 5.5 %15.7 %(0.9)%
 Tax credits 1.7 %11.3 %0.2 %
 Other permanent book-tax differences (3.3)%(8.6)%0.8 %
 Change in foreign valuation allowance(11.9)%— %— %
 Other1.5 %1.1 %— %
 Effective tax rate14.1 %44.9 %26.3 %
Schedule of Components of Net Deferred Income Tax Liability
The components of the net deferred income tax liability were as follows:
 December 31,
 20202019
 (In thousands)
Deferred income tax assets:
Self-insurance accruals$104,346 $94,690 
Net operating loss carryforwards381,585 619,314 
Accrued compensation and benefits46,321 31,402 
Pension benefits75,466 78,004 
Deferred revenue170,958 146,383 
Other, including federal benefit on state tax positions35,104 30,750 
813,780 1,000,543 
Valuation allowance(41,153)(17,577)
772,627 982,966 
Deferred income tax liabilities:
Property and equipment basis differences(1,888,112)(2,121,842)
Other(5,379)(5,386)
(1,893,491)(2,127,228)
Net deferred income tax liability (1)
$(1,120,864)$(1,144,262)
_______________
(1)Deferred tax assets of $5 million and $17 million have been included in "Sales-type leases and other assets" as of December 31, 2020 and 2019, respectively.
Schedule of Uncertain Tax Positions
In many cases, our uncertain tax positions are related to tax years that remain subject to examination by the relevant taxing authorities. The following table summarizes these open tax years by jurisdiction:
JurisdictionOpen Tax Year
United States (Federal)2011, 2013 - 2015, 2017 - 2020
Canada2013 - 2020
Mexico2015 - 2020
United Kingdom2019 - 2020
Brazil (in discontinued operations)2015 - 2020
Schedule of Activity Related to Unrecognized Tax Benefits
The following table summarizes the activity related to unrecognized tax benefits (excluding the federal benefit received from state positions):
 December 31,
 202020192018
 (In thousands)
Balance at January 1$48,918 $58,819 $62,288 
Additions based on tax positions related to the current year2,225 1,422 3,885 
Reductions due to lapse of applicable statutes of limitation(8,356)(11,323)(7,354)
Gross balance at December 3142,787 48,918 58,819 
Interest and penalties4,491 4,772 4,594 
Balance at December 31$47,278 $53,690 $63,413