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Restructuring (Restructuring Charges by Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring (gains) charges, net | $ (1.1) | $ 0.0 | $ (14.3) | $ 22.0
Aerospace & Electronics |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring (gains) charges, net | 0.0 | 0.0 | 0.0 | 4.7
Process Flow Technologies |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring (gains) charges, net | 0.0 | 0.0 | (12.6) | 4.7
Payment & Merchandising Technologies |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring (gains) charges, net | (1.1) | 0.0 | (1.7) | 12.6
Cost of Sales and Selling, General and Administrative |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Other costs related to facility consolidations | 1.9 | 1.4 | 5.7 | 4.0
Cost of Sales and Selling, General and Administrative | Process Flow Technologies |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Other costs related to facility consolidations | $ 1.9 | 1.2 | $ 5.7 | 3.0
Cost of Sales and Selling, General and Administrative | Payment & Merchandising Technologies |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Other costs related to facility consolidations |  | $ 0.2 |  | $ 1.0

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