Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Components of Income Tax Expense (Benefit)

Components of income tax expense/(benefit) are as follows (amounts in thousands):

	Year Ended December 31,
	2020			2019			2018
Current
Federal	$	268,974		$	225,663		$	195,862
Foreign		13,978			9,284			13,699
State		43,333			40,152			37,555
		326,285			275,099			247,116
Deferred
Federal		(20,382	)		(27,073	)		(6,216	)
Foreign		(2,496	)		1,874			(666	)
State		(4,114	)		(11,106	)		(3,592	)
		(26,992	)		(36,305	)		(10,474	)
Total	$	299,293		$	238,794		$	236,642

Reconciliation Between Federal Statutory Rate and Effective Tax Rate

A reconciliation between the federal statutory rate and the effective tax rate is as follows:

	Year Ended December 31,
	2020			2019			2018
Federal statutory rate		21.0	%		21.0	%		21.0	%
State taxes, net of federal income tax benefit		2.5	%		2.2	%		2.6	%
Tax effects of foreign operations		-0.3	%		-0.3	%		-0.5	%
Tax benefit from settlement of employee equity awards		0.5	%		-1.0	%		-0.1	%
Enactment of the TCJA-17		0.0	%		0.0	%		-0.6	%
Other items		0.4	%		0.8	%		0.9	%
Impact of income attributable to noncontrolling interests		-0.2	%		-0.3	%		-0.4	%
Effective tax rate		23.9	%		22.4	%		22.9	%

Components of Deferred Taxes

The components of deferred taxes are as follows (amounts in thousands):

		Year Ended December 31,
		2020							2019
		Assets				Liabilities			Assets				Liabilities
Self-insurance reserves	$		75,648		$			$		69,217		$
Compensation accruals			71,054							70,680
Doubtful accounts and other reserves			94,295							77,665
Other currently non-deductible accrued liabilities			61,634							36,500
Depreciable and amortizable assets							296,588							275,901
Operating lease liabilities			89,865							76,164
Right of use assets-operating leases							89,493							76,164
State and foreign net operating loss carryforwards and other state and foreign deferred tax assets			81,036							87,662
Net pension liabilities – OCI only			1,356							2,427
Other liabilities							3,697							1,855
	$		474,888		$		389,778	$		420,315		$		353,920
Valuation Allowance			(68,003	)			0			(75,277	)			0
Total deferred income taxes	$		406,885		$		389,778	$		345,038		$		353,920

Reconciliation of Unrecognized Tax Benefits

The tabular reconciliation of unrecognized tax benefits for the years ended December 31, 2020, 2019 and 2018 is as follows (amounts in thousands):

	As of  December 31,
	2020		2019			2018
Balance at January 1,	$	2,164	$	1,553		$	1,096
Additions based on tax positions related to the current year		500		500			500
Additions for tax positions of prior years		142		113			62
Reductions for tax positions of prior years		0		0			0
Settlements		0		(2	)		(105	)
Balance at December 31,	$	2,806	$	2,164		$	1,553