Segment financial information - product lines (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
Disaggregation by product line | |||||||||||
Net sales | $ 1,524.0 | $ 1,503.8 | $ 1,532.4 | $ 1,480.1 | $ 1,473.9 | $ 1,494.2 | $ 1,477.9 | $ 1,418.3 | $ 6,040.3 | $ 5,864.3 | $ 1,247.4 |
Proprietary materials & consumables | |||||||||||
Disaggregation by product line | |||||||||||
Net sales | 2,008.5 | 1,933.9 | |||||||||
Third party materials & consumables | |||||||||||
Disaggregation by product line | |||||||||||
Net sales | 2,395.6 | 2,364.9 | |||||||||
Services & specialty procurement | |||||||||||
Disaggregation by product line | |||||||||||
Net sales | 735.6 | 663.5 | |||||||||
Equipment & instrumentation | |||||||||||
Disaggregation by product line | |||||||||||
Net sales | $ 900.6 | $ 902.0 |