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Business Segments, Geographic Information and Major Customers - Income Statement Items (Details) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) segment | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Segment Reporting [Abstract] |  |  |  |  |  |  |  |  |  |  |
Number of reportable operating business segments | segment |  |  |  |  |  |  |  |  | 3 |  |
Revenue: |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 9,358,100,000 | $ 9,322,700,000 | $ 9,459,400,000 | $ 8,678,800,000 | $ 9,988,600,000 | $ 10,429,500,000 | $ 10,150,800,000 | $ 9,181,300,000 | $ 36,819,000,000.0 | $ 39,750,300,000 | $ 33,695,500,000
Gross profit: |  |  |  |  |  |  |  |  |  |  |
Gross profit | $ 286,600,000 | $ 305,700,000 | $ 268,600,000 | $ 251,100,000 | $ 262,200,000 | $ 266,700,000 | $ 246,200,000 | $ 243,400,000 | 1,112,000,000.0 | 1,018,500,000 | 932,200,000
Income from operations: |  |  |  |  |  |  |  |  |  |  |
Income from operations |  |  |  |  |  |  |  |  | 299,700,000 | 259,700,000 | 45,600,000
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 87,400,000 | 81,500,000 | 86,000,000.0
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  | 80,900,000 | 72,300,000 | 54,000,000.0
Restructuring charges |  |  |  |  |  |  |  |  | 19,700,000 | 17,100,000 | 59,600,000
Goodwill impairment and intangible asset impairment |  |  |  |  |  |  |  |  | 0 |  |
Aviation segment |  |  |  |  |  |  |  |  |  |  |
Revenue: |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 18,479,500,000 | 19,119,700,000 | 14,538,200,000
Gross profit: |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  | 551,600,000 | 507,800,000 | 440,500,000
Land segment |  |  |  |  |  |  |  |  |  |  |
Revenue: |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 10,280,900,000 | 11,381,100,000 | 10,958,000,000.0
Gross profit: |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  | 378,900,000 | 364,900,000 | 365,800,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  | 19,700,000 | 17,100,000 | 52,400,000
Marine segment |  |  |  |  |  |  |  |  |  |  |
Revenue: |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 8,058,500,000 | 9,249,500,000 | 8,199,300,000
Gross profit: |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  | 181,500,000 | 145,800,000 | 126,000,000.0
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |
Restructuring charges |  |  |  |  |  |  |  |  |  |  | 1,400,000
Goodwill impairment and intangible asset impairment |  |  |  |  |  |  |  |  |  |  | 79,100,000
Operating Segments |  |  |  |  |  |  |  |  |  |  |
Income from operations: |  |  |  |  |  |  |  |  |  |  |
Income from operations |  |  |  |  |  |  |  |  | 406,100,000 | 336,300,000 | 127,200,000
Operating Segments | Aviation segment |  |  |  |  |  |  |  |  |  |  |
Income from operations: |  |  |  |  |  |  |  |  |  |  |
Income from operations |  |  |  |  |  |  |  |  | 283,900,000 | 250,600,000 | 192,900,000
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 28,500,000 | 27,500,000 | 26,800,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  | 23,000,000.0 | 19,700,000 | 12,300,000
Restructuring charges |  |  |  |  |  |  |  |  | 1,200,000 | 1,600,000 |
Operating Segments | Land segment |  |  |  |  |  |  |  |  |  |  |
Income from operations: |  |  |  |  |  |  |  |  |  |  |
Income from operations |  |  |  |  |  |  |  |  | 55,000,000.0 | 47,800,000 | (7,900,000)
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 48,000,000.0 | 46,500,000 | 49,800,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  | 26,900,000 | 30,900,000 | 21,000,000.0
Restructuring charges |  |  |  |  |  |  |  |  | 4,400,000 | 6,500,000 |
Operating Segments | Marine segment |  |  |  |  |  |  |  |  |  |  |
Income from operations: |  |  |  |  |  |  |  |  |  |  |
Income from operations |  |  |  |  |  |  |  |  | 67,100,000 | 37,800,000 | (57,800,000)
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,500,000 | 2,200,000 | 5,800,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  | 28,300,000 | 2,900,000 | 1,500,000
Restructuring charges |  |  |  |  |  |  |  |  | 1,200,000 | 4,500,000 |
Corporate |  |  |  |  |  |  |  |  |  |  |
Income from operations: |  |  |  |  |  |  |  |  |  |  |
Income from operations |  |  |  |  |  |  |  |  | (106,400,000) | (76,600,000) | (81,600,000)
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 6,400,000 | 5,300,000 | 3,500,000
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  | 2,700,000 | 18,800,000 | $ 19,100,000
Restructuring charges |  |  |  |  |  |  |  |  | $ 13,000,000.0 | $ 4,500,000 |

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