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Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Oct. 02, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Sep. 02, 2020
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Gross goodwill, beginning of the period |  |  |  | $ 953,800,000 | $ 843,700,000 |  |
Accumulated impairment, balance at the beginning of the period |  |  |  | (496,500,000) | (475,100,000) |  |
Goodwill, balance at the beginning of the period |  |  |  | 457,300,000 | 368,600,000 |  |
Goodwill resulting from business combinations |  |  |  | 19,900,000 | 124,700,000 |  |
Impairments |  |  |  | 0 | (28,200,000) |  |
Accumulated impairment |  |  |  | (12,000,000.0) |  |  |
Goodwill, impairment, net of accumulation |  |  |  | (12,000,000.0) |  |  |
Gross goodwill related to foreign currency translation |  |  |  | (19,000,000.0) | (14,600,000) |  |
Accumulated impairments related to foreign currency translation |  |  |  | 9,100,000 | 6,800,000 |  |
Goodwill related to foreign currency translation |  |  |  | (9,900,000) | (7,800,000) |  |
Gross goodwill, end of the period | $ 954,700,000 | $ 953,800,000 |  | 954,700,000 | 953,800,000 | $ 843,700,000 |
Accumulated impairment, balance at the end of the period | (499,400,000) | (496,500,000) |  | (499,400,000) | (496,500,000) | (475,100,000) |
Goodwill, balance at the end of the period | 455,300,000 | 457,300,000 |  | 455,300,000 | 457,300,000 | 368,600,000 |
Impairment of goodwill and intangible assets |  |  |  | 13,400,000 | 30,000,000.0 | 700,000 |
Other indefinite-lived intangible assets | 500,000 | 500,000 |  |  |  |  |
Non-cash asset write-downs | 13,400,000 | 5,700,000 |  | 300,000 | 0 | 400,000 |
Intangibles, net | 401,600,000 | 415,500,000 |  | 401,600,000 | 415,500,000 |  |
ULC Robotics |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Impairments | (12,000,000.0) |  |  |  |  |  |
Goodwill, balance at the end of the period | 0 |  |  | 0 |  |  |
Impairment of goodwill and intangible assets | 12,900,000 | 5,200,000 |  | 12,900,000 | 29,500,000 |  |
Trademarks |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Non-cash asset write-downs |  |  |  | 500,000 | 500,000 | 700,000 |
Trademarks | ULC Robotics |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Other indefinite-lived intangible assets | 900,000 |  |  | 900,000 | 1,300,000 |  |
Intangibles, net | 5,400,000 |  |  | 5,400,000 |  |  |
ITL |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Goodwill resulting from business combinations |  |  |  | 10,800,000 |  |  |
Sealite Acquisition |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Goodwill resulting from business combinations |  |  |  |  | 47,700,000 |  |
Goodwill, period increase (decrease) |  |  |  | 200,000 |  |  |
Cincinnati Fan |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Goodwill resulting from business combinations |  |  |  |  | 46,000,000.0 |  |
Goodwill, period increase (decrease) |  |  |  | 8,900,000 |  |  |
Enterprise Control Systems Ltd |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Goodwill resulting from business combinations |  |  |  |  | 25,900,000 |  |
Contingent consideration | 0.0 | 1,500,000 | $ 8,200,000 | 0.0 | 1,500,000 |  |
ULC Robotics |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Impairments |  | (5,200,000) |  |  |  |  |
Goodwill, period increase (decrease) |  |  |  |  | 3,100,000 |  |
Impairment of goodwill and intangible assets |  |  | 24,300,000 |  | 24,300,000 | 700,000 |
Contingent consideration |  |  | 24,300,000 |  |  |  | $ 24,300,000
Non-cash asset write-downs |  |  |  | 500,000 | 500,000 |  |
ULC Robotics | Goodwill |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Impairments |  | (4,900,000) | (23,300,000) |  |  |  |
ULC Robotics | Trademarks |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Intangibles, net |  | 300,000 |  |  | 300,000 |  |
ULC Robotics | Other Operating Income (Expense) |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Impairment of goodwill and intangible assets |  |  | $ 24,300,000 |  |  |  |
Sensors & Software |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Goodwill, period increase (decrease) |  |  |  |  | 2,000,000.0 |  |
HVAC reportable segment |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Gross goodwill, beginning of the period |  |  |  | 528,900,000 | 492,200,000 |  |
Accumulated impairment, balance at the beginning of the period |  |  |  | (334,100,000) | (340,600,000) |  |
Goodwill, balance at the beginning of the period |  |  |  | 194,800,000 | 151,600,000 |  |
Goodwill resulting from business combinations |  |  |  | 8,900,000 | 46,000,000.0 |  |
Impairments |  |  |  | 0 | 0 |  |
Accumulated impairment |  |  |  | 0 |  |  |
Goodwill, impairment, net of accumulation |  |  |  | 0 |  |  |
Gross goodwill related to foreign currency translation |  |  |  | (8,300,000) | (9,300,000) |  |
Accumulated impairments related to foreign currency translation |  |  |  | 5,900,000 | 6,500,000 |  |
Goodwill related to foreign currency translation |  |  |  | (2,400,000) | (2,800,000) |  |
Gross goodwill, end of the period | 529,500,000 | 528,900,000 |  | 529,500,000 | 528,900,000 | 492,200,000 |
Accumulated impairment, balance at the end of the period | (328,200,000) | (334,100,000) |  | (328,200,000) | (334,100,000) | (340,600,000) |
Goodwill, balance at the end of the period | 201,300,000 | 194,800,000 |  | 201,300,000 | 194,800,000 | 151,600,000 |
Detection and Measurement reportable segment |  |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |  |
Gross goodwill, beginning of the period |  |  |  | 424,900,000 | 351,500,000 |  |
Accumulated impairment, balance at the beginning of the period |  |  |  | (162,400,000) | (134,500,000) |  |
Goodwill, balance at the beginning of the period |  |  |  | 262,500,000 | 217,000,000.0 |  |
Goodwill resulting from business combinations |  |  |  | 11,000,000.0 | 78,700,000 |  |
Impairments |  |  |  | 0 | (28,200,000) |  |
Accumulated impairment |  |  |  | (12,000,000.0) |  |  |
Goodwill, impairment, net of accumulation |  |  |  | (12,000,000.0) |  |  |
Gross goodwill related to foreign currency translation |  |  |  | (10,700,000) | (5,300,000) |  |
Accumulated impairments related to foreign currency translation |  |  |  | 3,200,000 | 300,000 |  |
Goodwill related to foreign currency translation |  |  |  | (7,500,000) | (5,000,000.0) |  |
Gross goodwill, end of the period | 425,200,000 | 424,900,000 |  | 425,200,000 | 424,900,000 | 351,500,000 |
Accumulated impairment, balance at the end of the period | (171,200,000) | (162,400,000) |  | (171,200,000) | (162,400,000) | (134,500,000) |
Goodwill, balance at the end of the period | $ 254,000,000.0 | $ 262,500,000 |  | $ 254,000,000.0 | $ 262,500,000 | $ 217,000,000.0 |

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