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Goodwill and Intangible Assets - Components of Intangible Assets (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Finite Lived Intangible Assets [Line Items] |  |  |
Weighted Average Remaining Useful Life (in Years) |  | 8 years 6 months | 9 years 1 month 6 days
Gross Carrying Amount |  | $ 593.1 | $ 542.9
Accumulated Amortization |  | $ 284.7 | $ 247.0
Customer Relationships |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Weighted Average Remaining Useful Life (in Years) | [1],[2] | 8 years 6 months | 9 years 1 month 6 days
Gross Carrying Amount | [1],[2] | $ 551.1 | $ 503.8
Accumulated Amortization | [1],[2] | $ 254.9 | $ 220.2
Trademarks and Trade Names |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Weighted Average Remaining Useful Life (in Years) | [2] | 8 years 4 months 24 days | 9 years 3 months 18 days
Gross Carrying Amount | [2] | $ 37.6 | $ 34.8
Accumulated Amortization | [2] | $ 25.5 | $ 23.0
Other Intangible Assets |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |
Weighted Average Remaining Useful Life (in Years) | [2] | 2 years 2 months 12 days | 1 year 2 months 12 days
Gross Carrying Amount | [2] | $ 4.4 | $ 4.3
Accumulated Amortization | [2] | $ 4.3 | $ 3.8
[1] | During the second quarter of 2020, the Company recorded a $4.5 million adjustment to decrease the remaining book value of the customer relationships intangible asset as a result of the closure of the San Lorenzo, California corrugated products facility.
[2] | In connection with the December 2021 acquisition of Advance Packaging, the Company recorded intangible assets of $47.3 million for customer relationships, $2.8 million for trade names, and $0.1 million for other intangibles.

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