Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Schedule Of Stock Repurchase Activities

The following table provides the stock repurchase activities during the years ended December 31, 2019, 2018, and 2017 (in millions, except per share amounts):

	Years Ended December 31,
	2019		2018		2017
Shares repurchased	0.6		—		7.3
Average price per share	$	481.35	$	—	$	310.32
Value of shares repurchased	$	269.5	$	—	$	2,274.0

Components of Accumulated Other Comprehensive Income (Loss), Net of Tax

The components of accumulated other comprehensive income (loss), net of tax, for the years ended December 31, 2019, and 2018, are as follows (in millions):

	Year Ended December 31, 2019
	Gains (Losses) on Hedge Instruments		Unrealized  Gains (Losses) on Available-for-Sale Securities		Foreign Currency Translation Gains (Losses)		Employee Benefit Plans		Total
Beginning balance	$	0.2	$	(9.8)	$	(0.3)	$	(3.4)	$	(13.3)
Other comprehensive income (loss) before reclassifications	5.8		30.7		0.3		(5.9)		30.9
Reclassified from accumulated other comprehensive (loss)	(5.3)		(0.5)		—		0.6		(5.2)
Net current-period other comprehensive income (loss)	0.5		30.2		0.3		(5.3)		25.7
Ending balance	$	0.7	$	20.4	$	—	$	(8.7)	$	12.4
	Year Ended December 31, 2018
	Gains (Losses) on Hedge Instruments		Unrealized Gains (Losses) on Available-for-Sale Securities		Foreign Currency Translation Gains (Losses)		Employee Benefit Plans		Total
Beginning balance	$	(2.4)	$	(11.3)	$	2.3	$	(4.1)	$	(15.5)
Other comprehensive income (loss) before reclassifications	3.6		0.3		(2.6)		0.4		1.7
Reclassified from accumulated other comprehensive income (loss)	(1.0)		1.2		—		0.3		0.5
Net current-period other comprehensive income (loss)	2.6		1.5		(2.6)		0.7		2.2
Ending balance	$	0.2	$	(9.8)	$	(0.3)	$	(3.4)	$	(13.3)