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Goodwill, Intangible and Long-Lived Assets - Narrative (Details) |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 01, 2019 USD ($) | Oct. 01, 2018 USD ($) | Oct. 01, 2017 USD ($) | Dec. 31, 2019 USD ($) company | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Jun. 01, 2017 USD ($)
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  | $ 0 | $ 0 | $ 0 |
Number of companies acquired | company |  |  |  | 3 |  |  |
Goodwill recognized |  |  |  | $ 14,200,000 |  | 5,675,200,000 |
Finite-lived assets acquired |  |  |  | 34,900,000 |  |  |
Impairment of intangible assets |  |  |  | 122,100,000 |  | 2,000,000.0 |
Impairment of trademarks |  | $ 0 |  |  |  |  |
Amortization of finite-lived intangible assets for the next five years: |  |  |  |  |  |  |
2020 |  |  |  | 298,700,000 |  |  |
2021 |  |  |  | 297,900,000 |  |  |
2022 |  |  |  | 296,300,000 |  |  |
2023 |  |  |  | 293,900,000 |  |  |
2024 |  |  |  | 291,300,000 |  |  |
The Americas Group |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill recognized |  |  |  |  |  | 2,276,100,000 |
Performance Coatings Group |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill recognized |  |  |  | 14,200,000 |  | 1,925,900,000 |
Consumer Brands Group |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill recognized |  |  |  |  |  | 1,473,200,000 |
Trademarks |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment of intangible assets | $ 122,100,000 |  |  | $ 15,700,000 |  |  |
Trademarks | The Americas Group |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment of trademarks |  |  | $ 2,000,000.0 |  |  |  |
Impairment of goodwill |  |  | $ 0 |  |  |  |
Trademarks | Performance Coatings Group |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment of intangible assets | 117,000,000.0 |  |  |  |  |  |
Trademarks | Consumer Brands Group |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment of intangible assets | 5,100,000 |  |  |  |  |  |
North America | Trademarks | Performance Coatings Group |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment of intangible assets | 75,600,000 |  |  |  |  |  |
Asia Pacific | Trademarks | Performance Coatings Group |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment of intangible assets | $ 25,700,000 |  |  |  |  |  |
Valspar |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill recognized |  |  |  |  |  | 5,900,000,000 |
Finite-lived assets acquired |  |  |  |  |  | 4,900,000,000 |
Indefinite-lived trademarks recognized |  |  |  |  |  |  | $ 614,300,000
Valspar | Trademarks |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Indefinite-lived trademarks recognized |  |  |  |  |  | $ 614,300,000 |

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