Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 530.1	$ 617.0	$ 354.9
Other comprehensive income (loss), net of tax:
Pension, SERP and Retiree medical adjustments, net of tax	71.7	(41.0)	19.8
Unrealized foreign exchange gain (loss) on intercompany loan, net of effect	4.3	(3.2)	4.9
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(0.6)
Foreign currency translation adjustments	20.3	(23.9)	33.7
Total other comprehensive income (loss), net of tax	95.7	(68.1)	58.4
Total comprehensive income	$ 625.8	$ 548.9	$ 413.3