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Additional Consolidated Income Statement and Cash Flow Information	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Additional Consolidated Income Statement and Cash Flow Information	Additional Consolidated Income Statement and Cash Flow Information Included in other income (expense), net are interest and other investment income of $2.7 million, $4.6 million and $2.0 million for 2020, 2019 and 2018, respectively. Income taxes paid in 2020, 2019 and 2018 were $210.4 million, $221.6 million and $195.2 million, respectively. Cash paid for interest was $86.2 million, $84.9 million and $83.6 million in 2020, 2019 and 2018, respectively.

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