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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Future Minimum Payments Under Unconditional Purchase Commitments
Future minimum payments under unconditional purchase commitments, primarily for inventory purchase commitments as of December 31, 2019 were as follows:
(in millions)
 
2020
$
83.6

2021
1.0

2022
0.3

2023

2024

Thereafter

Total unconditional purchase commitments
$
84.9