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v3.21.1

Reportable Business Segments, Reconciliation of Segment Operating Income to Consolidated Income Before Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Segment Reporting Information |  |
Operating income | $ 464.8 | $ 316.9
Stock-based compensation expense | (19.1) | (15.4)
Other operating expenses | (14.0) | (13.8)
Interest expense | (28.6) | (28.8)
Other (expense) income, net | (0.3) | 1.1
Income before income taxes | 435.9 | 289.2
Operating Segment |  |
Segment Reporting Information |  |
Operating income | $ 497.9 | $ 346.1

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