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Income Taxes - Components of Income Tax Expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Current tax expense: |  |  |
U.S. federal | $ 14,480 | $ 30,208 | $ 2,817
State and local | 16,360 | 11,630 | 6,969
Foreign | 62,993 | 53,105 | 45,042
Total current | 93,833 | 94,943 | 54,828
Deferred tax (benefit) expense: |  |  |
U.S. federal | (7,206) | (16,389) | 12,462
State and local | (13,121) | (6,897) | 1,258
Foreign | (22,673) | (48,186) | (13,795)
Total deferred | (43,000) | (71,472) | (75)
Total current and deferred | 50,833 | 23,471 | 54,753
Total tax expense | 59,388 | 42,449 | 58,665
Benefit relating to interest rate swaps used to increase equity |  |  |
Deferred tax (benefit) expense: |  |  |
Other tax benefit (expense) | 8,257 | 17,666 | 3,840
Benefit from stock transactions with employees used to increase equity |  |  |
Deferred tax (benefit) expense: |  |  |
Other tax benefit (expense) | 56 | 54 | 58
Benefit relating to defined-benefit pension adjustments used to increase equity |  |  |
Deferred tax (benefit) expense: |  |  |
Other tax benefit (expense) | $ 242 | $ 1,258 | $ 14

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