Elective deferrals vested percentage.

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- Definition

Percentage of earnings deferred into company stock units.

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- Definition

Percentage of earnings deferred into company stock units additional elective deferral.

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- Definition

Share based compensation arrangement by share based payment award award performance period.

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Sharebased compensation arrangement by share based payment award award shares potentially converted range percentage.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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Percentage of vesting of award under share-based payment arrangement.

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Employee Incentive, Deferred Compensation, And Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to grant			8,300,000
Stock-based compensation			$ 58,571	$ 55,223
Contributions to profit sharing	$ 3,800	$ 3,600	7,600	7,100
Incentive Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 46,000	$ 39,300	$ 88,400	$ 76,300
Restricted Stock Units, PRSUs, and Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of stock awards outstanding	19,500,000		19,500,000
Unvested stock awards outstanding	16,800,000		16,800,000
Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			5 years
Award performance period in years			4 years
Performance-based Restricted Stock Units [Member] \| One to Four Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of earned award vested			80.00%
Performance-based Restricted Stock Units [Member] \| Fifth Year [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of earned award vested			20.00%
Restricted Stock Units and Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to non-vested options	$ 624,500		$ 624,500
Weighted-average period, compensation cost expected to recognized, in years			2 years 8 months 12 days
SWAP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Elective deferrals vested percentage	100.00%		100.00%
Percentage of earnings deferred into company stock units	5.00%		5.00%
Percentage of earnings deferred into company stock units, Additional elective deferral			1.00%
Minimum [Member] \| Deferred Compensation Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Minimum [Member] \| Deferred Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Minimum [Member] \| Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Minimum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Minimum [Member] \| Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential percentage of converted shares			0.00%
Minimum [Member] \| SWAP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Maximum [Member] \| Deferred Compensation Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			8 years
Maximum [Member] \| Deferred Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			10 years
Maximum [Member] \| Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			5 years
Maximum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			10 years
Maximum [Member] \| Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential percentage of converted shares			200.00%
Maximum [Member] \| SWAP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			10 years