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Supplemental Balance Sheet Information (Tables)
 3 Months Ended
Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of accounts receivable
Accounts receivable consist of the following (in millions):
March 31, 2021December 31, 2020
Accounts receivable$109.5 $113.2 
Allowances and doubtful accounts:
Doubtful accounts(3.9)(4.4)
Sales discounts(0.3)(0.2)
Accounts receivable, net of allowances$105.3 $108.6 
Schedule of inventories
Inventories at the lower of cost (determined on the LIFO/FIFO or weighted-average cost methods) or market consist of the following (in millions):
March 31, 2021December 31, 2020
LIFONon-
LIFO		TotalLIFONon-
LIFO		Total
Raw materials$46.3 $3.0 $49.3 $43.9 $3.1 $47.0 
Work in process32.6 0.1 32.7 32.2 0.1 32.3 
Finished goods67.4 16.0 83.4 73.5 16.9 90.4 
Supplies and other— 6.3 6.3 — 6.7 6.7 
146.3 25.4 171.7 149.6 26.8 176.4 
Excess of FIFO or weighted-average cost over LIFO cost(6.5)— (6.5)(7.5)— (7.5)
Total
$139.8 $25.4 $165.2 $142.1 $26.8 $168.9 
Schedule of property, plant and equipment
Property, plant and equipment consists of the following (in millions):
March 31, 2021December 31, 2020
Land$1.1 $1.1 
Buildings46.7 46.8 
Machinery and equipment219.6 218.2 
Construction in progress24.5 23.3 
291.9 289.4 
Less accumulated depreciation(118.5)(114.1)
Total$173.4 $175.3 
Schedule of changes in the carrying amount of goodwill by business segment
The changes in the carrying amount of goodwill are as follows (in millions):
Goodwill
Balance, December 31, 2020$802.5 
Currency translation adjustment(0.4)
Balance, March 31, 2021$802.1 
Schedule of intangible assets subject to amortization
Intangible assets subject to amortization consist of the following (in millions):
March 31, 2021December 31, 2020
Gross
Carrying
Amount		Accumulated
Amortization		Net Carrying AmountGross
Carrying
Amount		Accumulated
Amortization		Net Carrying Amount
Trademarks$90.9 $(61.9)$29.0 $90.9 $(61.2)$29.7 
Patents and acquired technologies281.5 (179.4)102.1 282.0 (177.2)104.8 
Other61.3 (38.8)22.5 61.4 (38.2)23.2 
Total$433.7 $(280.1)$153.6 $434.3 $(276.6)$157.7 
Schedule of estimated amortization expense
We estimate amortization expense for the remainder of 2021 and the following four years and beyond will be (in millions):
Amount
Remainder of 2021$12.3 
202216.1 
202315.2 
202415.1 
202514.6 
Thereafter80.3 
Total$153.6 
Schedule of accrued expenses
Accrued Expenses
Accrued expenses consist of the following (in millions):
March 31, 2021December 31, 2020
Accrued rebates and customer incentives$19.4 $22.5 
Accrued salaries and wages21.3 36.0 
Accrued taxes3.4 2.7 
Other(a)
36.2 22.0 
Total$80.3 $83.2 
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(a)As of March 31, 2021, “Other” includes amounts accrued pursuant to a potential resolution of a matter with the U.S. Department of Justice, as described in “Commitments and Contingencies” in Note 8 to these condensed consolidated financial statements.
Schedule of other long-term liabilities
Other long-term liabilities consist of the following (in millions):
March 31, 2021December 31, 2020
Taxes payable$0.4 $0.4 
Accrued compensation and benefits5.6 5.8 
Other4.9 4.8 
Total$10.9 $11.0