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Income taxes (Tables)
12 Months Ended
Dec. 31, 2021
Income Tax Disclosure [Abstract]  
Provision for taxes on income The provision for taxes on income for the years ended December 31 consists of the following:
202120202019
Pretax income
Domestic$(342,951)$54,397 $217,098 
Foreign181,969 201,195 163,668 
Total pretax income$(160,982)$255,592 $380,766 
Current
Federal$21,247 $10,868 $14,933 
State15,212 4,608 2,565 
Foreign55,018 42,764 45,911 
Total current$91,477 $58,240 $63,409 
Deferred
Federal$(120,243)$432 $25,064 
State$(39,709)$512 8,599 
Foreign1,045 (6,154)(3,803)
Total deferred$(158,907)$(5,210)$29,860 
Total taxes$(67,430)$53,030 $93,269 
Deferred tax liabilities/(assets) Deferred tax (liabilities)/assets are comprised of the following at December 31:
20212020
Property, plant and equipment$(97,806)$(91,752)
Intangibles(96,057)(110,796)
Leases(75,587)(79,531)
Gross deferred tax liabilities$(269,450)$(282,079)
Retiree health benefits$2,935 $4,065 
Foreign loss carryforwards76,462 81,143 
U.S. Federal loss and credit carryforwards34,700 78,100 
Capital loss carryforwards4,050 3,121 
Employee benefits46,503 47,134 
Leases78,518 84,076 
Accrued liabilities and other assets75,611 69,341 
Gross deferred tax assets$318,779 $366,980 
Valuation allowance on deferred tax assets$(93,992)$(128,435)
Total deferred taxes, net$(44,663)$(43,534)
Reconciliation of U.S. Federal Statutory Tax Rate to actual consolidated tax expense A reconciliation of the U.S. federal statutory tax rate to the actual (benefit from)/provision for income taxes is as follows:
  
202120202019
Statutory tax rate$(33,806)21.0 %$53,674 21.0 %$79,961 21.0 %
State income taxes, net of federal tax benefit(15,863)9.9 %4,859 1.9 %7,767 2.0 %
Valuation allowance(33,576)20.9 %1,589 0.6 %3,174 0.8 %
Tax examinations including change in reserve for uncertain tax positions5,665 (3.5)%5,546 2.2 %(1,639)(0.4)%
Adjustments to prior year deferred taxes1,239 (0.8)%(265)(0.1)%(499)(0.1)%
Foreign earnings taxed at other than U.S. rates9,659 (6.0)%3,275 1.3 %5,083 1.3 %
Divestiture of business(808)0.5 %(15,356)(6.0)%— — %
Effect of tax rate changes275 (0.2)%(523)(0.2)%531 0.1 %
Foreign withholding taxes8,107 (5.0)%2,157 0.8 %2,015 0.5 %
Tax credits(21,936)13.6 %(13,529)(5.3)%(13,310)(3.5)%
Global intangible low-taxed income (GILTI)11,323 (7.0)%15,795 6.2 %12,340 3.2 %
Foreign-derived intangible income(202)0.1 %(1,238)(0.5)%(1,225)(0.3)%
Foreign currency gain/(loss) on distributions of previously taxed income3,365 (2.1)%(344)(0.1)%— — %
Other, net(872)0.5 %(2,610)(1.1)%(929)(0.2)%
(Benefit from)/Provision for income taxes$(67,430)41.9 %$53,030 20.7 %$93,269 24.4 %
Reconciliation of gross amounts of unrecognized tax benefits The following table sets forth the reconciliation of the gross amounts of unrecognized tax benefits at the beginning and ending of the periods indicated: 
202120202019
Gross Unrecognized Tax Benefits at January 1$11,230 $12,200 $14,400 
Increases in prior years’ unrecognized tax benefits12,283 91 — 
Decreases in prior years’ unrecognized tax benefits(275)(464)(1,300)
Increases in current year's unrecognized tax benefits1,088 1,569 1,300 
Decreases in unrecognized tax benefits from the lapse of statutes of limitations(6,170)(1,866)(2,300)
Settlements(14)(300)100 
Gross Unrecognized Tax Benefits at December 31$18,142 $11,230 $12,200