Business Segments, Geographic Information and Major Customers - Income Statement Items (Details)	3 Months Ended								12 Months Ended
	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