Fair Value Measurement - Schedule of Measurement Date, Net Book Value and Related Impairment Charges for Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total of ROU assets impaired	$ 97,100,000	$ 0
Goodwill, impairment charge	59,500,000	0	$ 0
Total ROU assets, net book value assets assessed for impairment	235,100,000	431,700,000
Goodwill, net book value assets assessed for impairment	526,600,000	586,000,000.0	585,500,000
Other intangible assets, net book value	63,100,000	152,200,000
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total ROU assets, net book value assets assessed for impairment	278,900,000
Aviation
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Goodwill, impairment charge	59,500,000
Goodwill, net book value assets assessed for impairment	149,500,000	$ 209,000,000.0	$ 208,700,000
Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total of ROU assets impaired	98,700,000
Other intangible assets, net, impairment charge	75,800,000
Total ROU assets, net book value assets assessed for impairment	121,400,000
Goodwill, net book value assets assessed for impairment	149,500,000
Other intangible assets, net book value	8,300,000
Fair Value, Nonrecurring | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total of ROU assets impaired	180,200,000
Other intangible assets, net, fair value	9,000,000.0
Fair Value, Nonrecurring | Aviation
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Goodwill, impairment charge	59,500,000
Fair Value, Nonrecurring | Aviation | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Goodwill, fair value	$ 149,500,000
Fair Value, Nonrecurring | ROU Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Measurement Date	Mar. 31, 2020
Total of ROU assets impaired	$ 77,500,000
Fair Value, Nonrecurring | ROU Assets | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total of ROU assets impaired	$ 147,400,000
Fair Value, Nonrecurring | ROU Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Measurement Date	Jun. 30, 2020
Total of ROU assets impaired	$ 16,700,000
Fair Value, Nonrecurring | ROU Assets | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total of ROU assets impaired	$ 26,200,000
Fair Value, Nonrecurring | ROU Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Measurement Date	Sep. 30, 2020
Total of ROU assets impaired	$ 1,600,000
Fair Value, Nonrecurring | ROU Assets | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total of ROU assets impaired	$ 1,600,000
Fair Value, Nonrecurring | ROU Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Measurement Date	Dec. 31, 2020
Total of ROU assets impaired	$ 2,900,000
Fair Value, Nonrecurring | ROU Assets | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total of ROU assets impaired	$ 5,000,000.0
Fair Value, Nonrecurring | Goodwill | Aviation
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Measurement Date	Aug. 31, 2020
Fair Value, Nonrecurring | Proprietary Know How
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Measurement Date	Jun. 30, 2020
Other intangible assets, net, impairment charge	$ 3,700,000
Fair Value, Nonrecurring | Proprietary Know How | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other intangible assets, net, fair value	$ 3,900,000
Fair Value, Nonrecurring | Customer Relationships
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Measurement Date	Aug. 31, 2020
Other intangible assets, net, impairment charge	$ 69,200,000
Fair Value, Nonrecurring | Customer Relationships | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other intangible assets, net, fair value	$ 4,600,000
Fair Value, Nonrecurring | Trade Names and Trademarks
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Measurement Date	Aug. 31, 2020
Other intangible assets, net, impairment charge	$ 2,900,000
Fair Value, Nonrecurring | Trade Names and Trademarks | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other intangible assets, net, fair value	$ 500,000