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Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Goodwill [Roll Forward] |  |
Beginning balances | $ 10,815.4 | $ 9,346.8
Goodwill acquired | 3,533.0 | 1,447.0
Currency translation adjustments | 48.4 | 22.6
Reclassifications and other | (1.6) | (1.0)
Ending balances | 14,395.2 | 10,815.4
Application Software |  |
Goodwill [Roll Forward] |  |
Beginning balances | 5,389.4 | 5,236.1
Goodwill acquired | 3,399.0 | 143.4
Currency translation adjustments | 14.5 | 8.3
Reclassifications and other | (0.6) | 1.6
Ending balances | 8,802.3 | 5,389.4
Network Software & Systems |  |
Goodwill [Roll Forward] |  |
Beginning balances | 3,933.5 | 2,623.7
Goodwill acquired | 134.0 | 1,303.6
Currency translation adjustments | 16.6 | 8.8
Reclassifications and other | (1.0) | (2.6)
Ending balances | 4,083.1 | 3,933.5
Measurement &Analytical Solutions |  |
Goodwill [Roll Forward] |  |
Beginning balances | 1,178.0 | 1,174.7
Goodwill acquired | 0.0 | 0.0
Currency translation adjustments | 12.8 | 3.3
Reclassifications and other | 0.0 | 0.0
Ending balances | 1,190.8 | 1,178.0
Process Technologies |  |
Goodwill [Roll Forward] |  |
Beginning balances | 314.5 | 312.3
Goodwill acquired | 0.0 | 0.0
Currency translation adjustments | 4.5 | 2.2
Reclassifications and other | 0.0 | 0.0
Ending balances | $ 319.0 | $ 314.5

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