Aggregate dividends paid during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Dividends (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended				6 Months Ended
	Nov. 05, 2020	Sep. 04, 2020	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Dividends Payable [Line Items]
Cash dividend paid (in dollars per share)		$ 0.3680
Dividends declared per common share (in dollars per share)			$ 0.3680		$ 0.3660		$ 0.7355	$ 0.7315
Cash dividend		$ 95.3	$ 95.3	$ 90.4	$ 87.3	$ 87.1
Subsequent Event
Dividends Payable [Line Items]
Dividends declared per common share (in dollars per share)	$ 0.3685
Forecast
Dividends Payable [Line Items]
Cash dividend	$ 96.0