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Goodwill And Intangible Assets (Changes To Goodwill) (Detail) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Goodwill [Line Items] |  |  |
Intangible Assets, Net (Excluding Goodwill) | $ 503.0 | $ 520.3 | $ 505.1
Intangibles with indefinite useful lives | 71.0 | $ 70.9 |
Balance at beginning of period | 1,609.0 |  |
Goodwill, Foreign Currency Translation Gain (Loss) | (13.8) |  |
Balance at end of period | 1,595.1 |  |
Fluid Handling |  |  |
Goodwill [Line Items] |  |  |
Balance at beginning of period | 360.0 |  |
Goodwill, Purchase Accounting Adjustments | (0.1) |  |
Goodwill, Foreign Currency Translation Gain (Loss) | (4.9) |  |
Balance at end of period | 355.0 |  |
Payment & Merchandising Technologies |  |  |
Goodwill [Line Items] |  |  |
Balance at beginning of period | 875.2 |  |
Goodwill, Foreign Currency Translation Gain (Loss) | (8.9) |  |
Balance at end of period | 866.3 |  |
Aerospace & Electronics |  |  |
Goodwill [Line Items] |  |  |
Balance at beginning of period | 202.5 |  |
Balance at end of period | 202.5 |  |
Engineered Materials |  |  |
Goodwill [Line Items] |  |  |
Balance at beginning of period | 171.3 |  |
Balance at end of period | $ 171.3 |  |

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