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Condensed Consolidated Statements of Equity - USD ($) $ in Thousands | Common Stock [Member] Deferred Compensation Plan [Member] | Common Stock [Member] Performance Shares [Member] | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Noncontrolling Interests [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balances at Dec. 31, 2017 |  |  |  | $ 4,187,568 | $ 115,743 | $ 108,413 |  | $ 1,856,946 | $ 5,400 | $ 6,274,070 |
Beginning Balances, shares at Dec. 31, 2017 |  |  |  | 263,494,670 |  |  |  |  |  |  |
Beginning Balance, treasury shares at Dec. 31, 2017 |  |  |  |  |  |  | 166,133 |  |  |  |
Sale of common shares held in trust |  |  |  | $ 1,947 |  |  |  |  |  | 1,947 |
Sale of common shares held in trust, shares |  |  |  | 26,849 |  |  | (26,849) |  |  |  |
Vesting of restricted share units (shares) |  | 114 | 154,181 | 452,700 |  |  |  |  |  |  |
Tax withholdings related to net share settlements of equity-based compensation |  |  |  |  | (14,121) |  |  |  |  | (14,121) |
Tax withholdings related to net share settlements of equity-based compensation, shares |  |  |  | (206,084) |  |  |  |  |  |  |
Equity-based compensation |  |  |  |  | 7,991 |  |  |  |  | 7,991 |
Repurchase of common shares (shares) |  |  |  | (594,474) |  |  |  |  |  |  |
Repurchase of common shares |  |  |  | $ (42,040) |  |  |  |  |  | (42,040) |
Cash dividends on common shares |  |  |  |  |  |  |  | (36,814) |  | (36,814) |
Amounts reclassified into earnings, net of taxes, before ASU 2017-12 |  |  |  |  |  | (1,303) |  |  |  | (1,303) |
Changes in fair value of cash flow hedges, net of taxes, before ASU 2017-12 |  |  |  |  |  | 9,114 |  |  |  | 9,114 |
Foreign currency translation adjustment |  |  |  |  |  | (59,330) |  |  |  | (59,330) |
Distributions to noncontrolling interests |  |  |  |  |  |  |  |  | (103) | (103) |
Net income |  |  |  |  |  |  |  | 124,869 | 163 | 125,032 |
Ending Balances at Mar. 31, 2018 |  |  |  | $ 4,147,475 | 109,613 | 56,894 |  | 1,961,297 | 5,460 | 6,280,739 |
Ending Balances, shares at Mar. 31, 2018 |  |  |  | 263,327,956 |  |  |  |  |  |  |
Ending Balance, treasury shares at Mar. 31, 2018 |  |  |  |  |  |  | 139,284 |  |  |  |
Beginning Balances at Dec. 31, 2017 |  |  |  | $ 4,187,568 | 115,743 | 108,413 |  | 1,856,946 | 5,400 | $ 6,274,070 |
Beginning Balances, shares at Dec. 31, 2017 |  |  |  | 263,494,670 |  |  |  |  |  |  |
Beginning Balance, treasury shares at Dec. 31, 2017 |  |  |  |  |  |  | 166,133 |  |  |  |
Repurchase of common shares (shares) |  |  |  |  |  |  |  |  |  | (594,474) |
Repurchase of common shares |  |  |  |  |  |  |  |  |  | $ (42,040) |
Cash dividends on common shares |  |  |  |  |  |  |  |  |  | (73,584) |
Amounts reclassified into earnings, net of taxes, before ASU 2017-12 | [1],[2] |  |  |  |  |  |  |  |  | (3,507) |
Changes in fair value of cash flow hedges, net of taxes, before ASU 2017-12 | [3] |  |  |  |  |  |  |  |  | 13,004 |
Foreign currency translation adjustment |  |  |  |  |  |  |  |  |  | (102,804) |
Net income |  |  |  |  |  |  |  |  |  | 263,846 |
Ending Balances at Jun. 30, 2018 |  |  |  | $ 4,147,674 | 118,113 | 15,106 |  | 2,060,156 | 5,592 | 6,346,641 |
Ending Balances, shares at Jun. 30, 2018 |  |  |  | 263,362,026 |  |  |  |  |  |  |
Ending Balance, treasury shares at Jun. 30, 2018 |  |  |  |  |  |  | 136,646 |  |  |  |
Cumulative effect adjustment from adoption of new accounting pronouncement |  |  |  |  |  |  |  | 16,296 |  | 16,296 |
Beginning Balances at Mar. 31, 2018 |  |  |  | $ 4,147,475 | 109,613 | 56,894 |  | 1,961,297 | 5,460 | 6,280,739 |
Beginning Balances, shares at Mar. 31, 2018 |  |  |  | 263,327,956 |  |  |  |  |  |  |
Beginning Balance, treasury shares at Mar. 31, 2018 |  |  |  |  |  |  | 139,284 |  |  |  |
Sale of common shares held in trust |  |  |  | $ 199 |  |  |  |  |  | 199 |
Sale of common shares held in trust, shares |  |  |  | 2,638 |  |  | (2,638) |  |  |  |
Vesting of restricted share units (shares) |  | 4,311 |  | 15,723 |  |  |  |  |  |  |
Tax withholdings related to net share settlements of equity-based compensation |  |  |  |  | (468) |  |  |  |  | (468) |
Tax withholdings related to net share settlements of equity-based compensation, shares |  |  |  | (6,173) |  |  |  |  |  |  |
Equity-based compensation |  |  |  |  | 8,968 |  |  |  |  | 8,968 |
Exercise of stock options and warrants, shares |  |  |  | 17,571 |  |  |  |  |  |  |
Cash dividends on common shares |  |  |  |  |  |  |  | (36,770) |  | (36,770) |
Amounts reclassified into earnings, net of taxes, before ASU 2017-12 |  |  |  |  |  | (2,204) |  |  |  | (2,204) | [1],[2]
Changes in fair value of cash flow hedges, net of taxes, before ASU 2017-12 |  |  |  |  |  | 3,890 |  |  |  | 3,890 | [3]
Foreign currency translation adjustment |  |  |  |  |  | (43,474) |  |  |  | (43,474) |
Net income |  |  |  |  |  |  |  | 138,682 | 132 | 138,814 |
Ending Balances at Jun. 30, 2018 |  |  |  | $ 4,147,674 | 118,113 | 15,106 |  | 2,060,156 | 5,592 | 6,346,641 |
Ending Balances, shares at Jun. 30, 2018 |  |  |  | 263,362,026 |  |  |  |  |  |  |
Ending Balance, treasury shares at Jun. 30, 2018 |  |  |  |  |  |  | 136,646 |  |  |  |
Cumulative effect adjustment from adoption of new accounting pronouncement |  |  |  |  |  |  |  | (3,053) |  | (3,053) |
Beginning Balances at Dec. 31, 2018 |  |  |  | $ 4,131,307 | 133,577 | (74,786) |  | 2,264,510 | 5,580 | $ 6,460,188 |
Beginning Balances, shares at Dec. 31, 2018 |  |  |  | 263,141,413 |  |  |  |  |  | 263,141,413 |
Beginning Balance, treasury shares at Dec. 31, 2018 |  |  |  |  |  |  | 129,889 |  |  | 129,889 |
Sale of common shares held in trust |  |  |  | $ 3,610 |  |  |  |  |  | $ 3,610 |
Sale of common shares held in trust, shares |  |  |  | 43,637 |  |  | (43,637) |  |  |  |
Vesting of restricted share units (shares) |  | 15,371 | 180,258 | 400,555 |  |  |  |  |  |  |
Tax withholdings related to net share settlements of equity-based compensation |  |  |  |  | (16,974) |  |  |  |  | (16,974) |
Tax withholdings related to net share settlements of equity-based compensation, shares |  |  |  | (202,679) |  |  |  |  |  |  |
Equity-based compensation |  |  |  |  | 11,627 |  |  |  |  | 11,627 |
Exercise of warrants |  |  |  | 8,690 |  |  |  |  |  |  |
Cash dividends on common shares |  |  |  |  |  |  |  | (42,084) |  | (42,084) |
Amounts reclassified into earnings, net of taxes |  |  |  |  |  | (1,817) |  |  |  | (1,817) |
Changes in fair value of cash flow hedges, net of taxes |  |  |  |  |  | (11,555) |  |  |  | (11,555) |
Foreign currency translation adjustment |  |  |  |  |  | 42,180 |  |  |  | 42,180 |
Net income |  |  |  |  |  |  |  | 125,622 | (45) | 125,577 |
Ending Balances at Mar. 31, 2019 |  |  |  | $ 4,134,917 | 128,230 | (45,978) |  | 2,345,970 | 5,535 | 6,568,674 |
Ending Balances, shares at Mar. 31, 2019 |  |  |  | 263,587,245 |  |  |  |  |  |  |
Ending Balance, treasury shares at Mar. 31, 2019 |  |  |  |  |  |  | 86,252 |  |  |  |
Beginning Balances at Dec. 31, 2018 |  |  |  | $ 4,131,307 | 133,577 | (74,786) |  | 2,264,510 | 5,580 | $ 6,460,188 |
Beginning Balances, shares at Dec. 31, 2018 |  |  |  | 263,141,413 |  |  |  |  |  | 263,141,413 |
Beginning Balance, treasury shares at Dec. 31, 2018 |  |  |  |  |  |  | 129,889 |  |  | 129,889 |
Repurchase of common shares (shares) |  |  |  |  |  |  |  |  |  | 0 |
Cash dividends on common shares |  |  |  |  |  |  |  |  |  | $ (84,215) |
Amounts reclassified into earnings, net of taxes | [1],[2] |  |  |  |  |  |  |  |  | (3,634) |
Changes in fair value of cash flow hedges, net of taxes | [3] |  |  |  |  |  |  |  |  | (30,382) |
Foreign currency translation adjustment |  |  |  |  |  | 85,315 |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 274,416 |
Ending Balances at Jun. 30, 2019 |  |  |  | $ 4,135,002 | 138,194 | (23,487) |  | 2,452,687 | 5,409 | $ 6,707,805 |
Ending Balances, shares at Jun. 30, 2019 |  |  |  | 263,601,239 |  |  |  |  |  | 263,601,239 |
Ending Balance, treasury shares at Jun. 30, 2019 |  |  |  |  |  |  | 85,279 |  |  | 85,279 |
Cumulative effect adjustment from adoption of new accounting pronouncement |  |  |  |  |  |  |  | (2,078) |  | $ (2,078) |
Beginning Balances at Mar. 31, 2019 |  |  |  | $ 4,134,917 | 128,230 | (45,978) |  | 2,345,970 | 5,535 | 6,568,674 |
Beginning Balances, shares at Mar. 31, 2019 |  |  |  | 263,587,245 |  |  |  |  |  |  |
Beginning Balance, treasury shares at Mar. 31, 2019 |  |  |  |  |  |  | 86,252 |  |  |  |
Sale of common shares held in trust |  |  |  | $ 85 |  |  |  |  |  | 85 |
Sale of common shares held in trust, shares |  |  |  | 973 |  |  | (973) |  |  |  |
Vesting of restricted share units (shares) |  |  |  | 6,495 |  |  |  |  |  |  |
Tax withholdings related to net share settlements of equity-based compensation |  |  |  |  | (290) |  |  |  |  | (290) |
Tax withholdings related to net share settlements of equity-based compensation, shares |  |  |  | (3,081) |  |  |  |  |  |  |
Equity-based compensation |  |  |  |  | 10,254 |  |  |  |  | 10,254 |
Exercise of warrants |  |  |  | 9,607 |  |  |  |  |  |  |
Cash dividends on common shares |  |  |  |  |  |  |  | (42,131) |  | (42,131) |
Amounts reclassified into earnings, net of taxes |  |  |  |  |  | (1,817) |  |  |  | (1,817) | [1],[2]
Changes in fair value of cash flow hedges, net of taxes |  |  |  |  |  | (18,827) |  |  |  | (18,827) | [3]
Foreign currency translation adjustment |  |  |  |  |  | 43,135 |  |  |  | 43,135 |
Distributions to noncontrolling interests |  |  |  |  |  |  |  |  | (117) | (117) |
Net income |  |  |  |  |  |  |  | 148,848 | (9) | 148,839 |
Ending Balances at Jun. 30, 2019 |  |  |  | $ 4,135,002 | $ 138,194 | $ (23,487) |  | $ 2,452,687 | $ 5,409 | $ 6,707,805 |
Ending Balances, shares at Jun. 30, 2019 |  |  |  | 263,601,239 |  |  |  |  |  | 263,601,239 |
Ending Balance, treasury shares at Jun. 30, 2019 |  |  |  |  |  |  | 85,279 |  |  | 85,279 |
[1] | Amounts reclassified from AOCIL into earnings related to realized gains and losses on interest rate swaps are recognized when interest payments or receipts occur related to the swap contracts, which correspond to when interest payments are made on the Company’s hedged debt.
[2] | Amounts reclassified from AOCIL into earnings related to realized gains and losses on the fuel hedges are recognized when settlement payments or receipts occur related to the hedge contracts, which correspond to when the underlying fuel is consumed.
[3] | In accordance with the derivatives and hedging guidance, the changes in fair values of interest rate swaps and fuel hedges have been recorded in equity as a component of AOCIL. As the critical terms of the interest rate swaps match the underlying debt being hedged, all unrealized changes in fair value are recorded in AOCIL. Because changes in the actual price of diesel fuel and changes in the DOE index price did not offset exactly each reporting period, the Company assessed whether the fuel hedges were highly effective using the cumulative dollar offset approach.

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