Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of accelerated share repurchase agreements. An accelerated share repurchase program is a combination of transactions that permits an entity to purchase a targeted number of shares immediately with the final purchase price of those shares determined by an average market price over a fixed period of time.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1707-109256

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 25
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653

Name:	us-gaap_IncrementalCommonSharesAttributableToAcceleratedShareRepurchaseAgreements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended		3 Months Ended
	Apr. 01, 2020	Apr. 30, 2020	Mar. 31, 2020	Mar. 31, 2020
Subsequent Event [Line Items]
Accelerated share repurchases, initial price, shares (in shares)				308,746
March 2020 Share Repurchase Program
Subsequent Event [Line Items]
Accelerated share repurchases, purchase price			$ 75.0
Subsequent Event \| March 2020 Share Repurchase Program
Subsequent Event [Line Items]
Accelerated share repurchases, initial price, shares (in shares)	430,477
Accelerated share repurchases, initial price paid per share (in dollars per share)	$ 139.38
Accelerated share repurchases, initial purchase price	$ 60.0
Additional shares (in shares)		85,231