CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 249.7	$ 206.6
Other comprehensive income (loss), net of tax (Note 12):
Foreign currency translation adjustments	(13.1)	33.3
Unrealized gain (loss) on cash flow hedges	7.2	(9.7)
Defined benefit pension plans	(0.1)	0.3
Unrealized gain (loss) on available-for-sale investments	3.3	(6.1)
Reclassification of net realized investment loss to earnings	0.0	1.4
Other comprehensive (loss) income	(2.7)	19.2
Comprehensive income	$ 247.0	$ 225.8

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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