Employee service share-based compensation estimated tax benefit from compensation expense.

No definition available.

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- Definition

Unrecognized cost of LTIP awards granted.

+ References

No definition available.

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Weighted average period over which unrecognized compensation is expected to be recognized for the long-term incentive program, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Amount of Long-term Incentive Program compensation cost.

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No definition available.

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- Definition

Share based compensation arrangement by share based payment award maximum share value authorized for purchase.

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No definition available.

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Share based compensation fair value adjustment.

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No definition available.

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Share-based Compensation Arrangement by Share-based Payment Award, Full Value Shares To Available Shares, Conversion Ratio

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No definition available.

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- Definition

Stock Repurchase Program, Additional Authorized Amount

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No definition available.

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

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No definition available.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

+ References

No definition available.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Disclosure of the weighted average expected dividend for an entity using a valuation technique with different dividend rates during the contractual term.

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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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No definition available.

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

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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No definition available.

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Amount remaining of a stock repurchase plan authorized.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Number of shares of common and preferred stock retired from treasury during the period.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Period Type:

Long-term Incentive Compensation and Shareholders’ Equity - Additional Information (Details)			2 Months Ended	3 Months Ended	12 Months Ended
	Jul. 01, 2018	Jan. 01, 2018	Feb. 22, 2019 USD ($) shares	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Jul. 11, 2018 USD ($)	Oct. 10, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of stock awards exercised					$ 31,045,000	$ 34,895,000	$ 73,944,000
Aggregate intrinsic value of stock awards outstanding					95,822,000
Aggregate intrinsic value of stock awards exercisable					0
Contributions used to purchase stock accumulated through payroll withholdings or through optional lump sum payments					658,913,000	616,116,000
Share-based awards, fair value assumptions, expected dividend					0	0	0
Long-term incentive program (LTIP) expense					85,759,000	61,978,000	64,956,000
Stock-based compensation expense					73,061,000	35,092,000	38,338,000
Estimated tax benefits recorded for stock-based compensation					13,591,000	7,717,000	12,731,000
Unrecognized compensation cost related to outstanding LTIP awards					99,935,000
Unrecognized compensation cost related to nonvested stock-based compensation arrangements under equity compensation and stock purchase plans					$ 88,596,000
Unrecognized compensation cost related to nonvested stock-based compensation arrangements under performance-based cash component of LTIP costs, weighted average remaining period (in years)					9 months 18 days
Unrecognized compensation cost related to nonvested stock-based compensation arrangements under stock-based component of LTIP costs, weighted average remaining period (in years)					1 year 6 months
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense					$ 7,988,000	13,473,000	28,397,000
Stock award exercises and other share issuances, net					$ 0	$ 0	0
Purchase of treasury stock (in shares) \| shares					16,844,067	12,966,672
Purchase of treasury stock					$ 1,153,511,000	$ 810,949,000
Purchase of treasury stock, average price per share \| $ / shares					$ 68.48	$ 62.54
Stock repurchase program, additional authorized amount								$ 1,389,999,000
Stock repurchase program, number of shares authorized to be repurchased \| shares									110,001,000
Preferred stock, shares authorized (in shares) \| shares					5,000,000	5,000,000
Acquisition of additional ownership interests in several existing majority-owned joint ventures					$ 28,082,000	$ 5,357,000	$ 21,512,000
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost				$ 23,470,000	14,704,000
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost					$ 9,727,000
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase of treasury stock (in shares) \| shares			0
Share repurchase program, available under the current board authorizations for additional share repurchase			$ 1,355,605,000
Stock Incentive Plan 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Terms of award (in years)					5 years
Full share awards to shares available, conversion ratio					3.5
Shares available for future grants \| shares					23,091,764
Stock Incentive Plan 2011 \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					36 months
Stock Incentive Plan 2011 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					48 months
Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding balance of stock-settled stock appreciation rights (in shares) \| shares					6,162,797	6,648,199
Weighted average fair value \| $ / shares					$ 16.24	$ 14.51	$ 13.74
Stock appreciation rights \| Stock Incentive Plan 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding balance of stock-settled stock appreciation rights (in shares) \| shares					6,162,797
Stock Settled Stock Units \| Stock Incentive Plan 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding balance of stock-settled stock units and cash-settled stock appreciation rights (in shares) \| shares					1,860,475
Cash-settled stock appreciation rights \| Stock Incentive Plan 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding balance of stock-settled stock units and cash-settled stock appreciation rights (in shares) \| shares					23,000
Cash Settled Stock Units \| Stock Incentive Plan 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding balance of cash-settled stock units \| shares					1,600
Cash-settled stock-based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock granted \| shares					0
Liability-classified share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding balance of cash-settled stock units \| shares					24,600
Stock-based compensation expense, fair value adjustment					$ (20,000)	$ 114,000	$ 376,000
Shares vested in period (in shares) \| shares					0
Stock-based compensation liability					$ 79,000
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grants \| shares					6,726,278
Employee entitlement for purchase of the Company's common stock during each calendar year					$ 25,000
Stock purchase price as percentage of fair market value	100.00%	100.00%			85.00%
Contributions used to purchase stock accumulated through payroll withholdings or through optional lump sum payments					$ 17,398,000	$ 22,131,000	$ 23,902,000
Stock issued for employee stock purchase plans \| shares					397,749	360,368	438,002
Expected volatility Rate					24.00%	23.00%	22.00%
Risk-free interest rate					1.90%	1.30%	0.80%
Weighted average fair value \| $ / shares					$ 17.45	$ 15.19	$ 16.73
General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense					$ 73,582,000	$ 34,431,000	$ 34,530,000
Treasury stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase of treasury stock (in shares) \| shares					16,844,000	12,967,000	16,649,000
Purchase of treasury stock					$ 1,153,511,000	$ 810,949,000	$ 1,072,377,000
Treasury Stock, Shares, Retired \| shares					16,844,000	12,967,000	23,226,000