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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 |  |

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- Definition 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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