Income Taxes (Tables)

12 Months Ended

Dec. 31, 2021

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,
	2021			2020			2019
Current
Federal	$	276,471		$	268,974		$	225,663
Foreign		13,754			13,978			9,284
State		44,993			43,333			40,152
		335,218			326,285			275,099
Deferred
Federal		(26,638	)		(20,382	)		(27,073	)
Foreign		1,521			(2,496	)		1,874
State		(4,420	)		(4,114	)		(11,106	)
		(29,537	)		(26,992	)		(36,305	)
Total	$	305,681		$	299,293		$	238,794

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,
	2021			2020			2019
Federal statutory rate		21.0	%		21.0	%		21.0	%
State taxes, net of federal income tax benefit		2.5	%		2.5	%		2.2	%
Tax effects of foreign operations		-0.1	%		-0.3	%		-0.3	%
Tax benefit from settlement of employee equity awards		-0.2	%		0.5	%		-1.0	%
Other items		0.3	%		0.4	%		0.8	%
Impact of income attributable to noncontrolling interests		0.1	%		-0.2	%		-0.3	%
Effective tax rate		23.6	%		23.9	%		22.4	%

Components of Deferred Taxes

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

		Year Ended December 31,
		2021							2020
		Assets				Liabilities			Assets				Liabilities
Self-insurance reserves	$		97,024		$			$		75,648		$
Compensation accruals			77,917							71,054
Doubtful accounts and other reserves			127,876							94,295
Other currently non-deductible accrued liabilities			31,240							61,634
Depreciable and amortizable assets							303,079							296,588
Operating lease liabilities			86,652							89,865
Right of use assets-operating leases							86,269							89,493
State and foreign net operating loss carryforwards and other state and foreign deferred tax assets			79,499							81,036
Net pension liabilities – OCI only			1,014							1,356
Other liabilities							3,811							3,697
	$		501,222		$		393,159	$		474,888		$		389,778
Valuation Allowance			(62,356	)			0			(68,003	)			0
Total deferred income taxes	$		438,866		$		393,159	$		406,885		$		389,778

Reconciliation of Unrecognized Tax Benefits

The tabular reconciliation of unrecognized tax benefits for the years ended December 31, 2021, 2020 and 2019 is as follows (amounts in thousands):

	As of  December 31,
	2021			2020		2019
Balance at January 1,	$	2,806		$	2,164	$	1,553
Additions based on tax positions related to the current year		500			500		500
Additions for tax positions of prior years		213			142		113
Reductions for tax positions of prior years		(261	)		0		0
Settlements		(714	)		0		(2	)
Balance at December 31,	$	2,544		$	2,806	$	2,164