Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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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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Percentage of vesting of award under share-based payment arrangement.

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Stock-Based Awards - Issuance of Awards Under New Compensation Award Structure (Details) - Performance Shares - $ / shares		1 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Feb. 28, 2019	Apr. 30, 2018	Feb. 28, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting term		3 years	3 years				3 years
Grant date fair value (USD per share)		$ 54.84	$ 56.15				$ 41.73
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accounting grant date (in shares)		19,143	43,136				185,270
Share of non-vested restricted stock units were outstanding (in shares)	19,143,000	19,143,000	43,136,000				141,540,000
Number of shares forfeited due to termination of recipient (in shares)	89,080
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accounting grant date (in shares)		47,857	107,835				555,810
Share of non-vested restricted stock units were outstanding (in shares)	47,857,000	47,857,000	107,835,000				424,620,000
Number of shares forfeited due to termination of recipient (in shares)	244,565
Performance Period One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting term				3 years	3 years	3 years
Grant date fair value (USD per share)				$ 58.23	$ 39.54	$ 40.64
Performance Period One \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accounting grant date (in shares)				13,178	3,572	121,764
Share of non-vested restricted stock units were outstanding (in shares)				13,178,000	0	121,764,000
Performance Period One \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accounting grant date (in shares)				32,945	8,930	304,410
Share of non-vested restricted stock units were outstanding (in shares)				32,945,000	0	304,410,000
Performance Period Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting term				3 years	5 years	5 years
Grant date fair value (USD per share)				$ 57.27	$ 39.54	$ 40.64
Performance Period Two \| Third Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting right percentage					33.00%	33.00%
Performance Period Two \| Fourth Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting right percentage					33.00%	33.00%
Performance Period Two \| Fifth Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting right percentage					33.00%	33.00%
Performance Period Two \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accounting grant date (in shares)				80,559	53,572	411,412
Share of non-vested restricted stock units were outstanding (in shares)				80,559,000	11,794,000	411,412,000
Performance Period Two \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accounting grant date (in shares)				201,398	133,930	1,028,530
Share of non-vested restricted stock units were outstanding (in shares)				201,398,000	29,485,000	1,028,530,000