Incentive Compensation Plans (Schedule of Long Term Incentive Plans Stock Unit Activity) (Details)	12 Months Ended
Mar. 31, 2021 $ / shares shares
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at April 1, 2020	4,468,089
Granted	11,579,143
Canceled	(795,515)
Vested	(1,131,199)
Unvested at March 31, 2021	14,120,518
Weighted Average Grant Date Fair Value, Unvested at April 1, 2020 \| $ / shares	$ 13.53
Weighted Average Grant Date Fair Value, Granted \| $ / shares	17.68
Weighted Average Grant Date Fair Value, Canceled \| $ / shares	12.63
Weighted Average Grant Date Fair Value, Vested \| $ / shares	13.63
Weighted Average Grant Date Fair Value, Unvested at March 31, 2021 \| $ / shares	$ 16.98
Deferred Stock Units DSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at April 1, 2020	45,704
Granted	86,916
Vested	(45,704)
Unvested at March 31, 2021	86,916
Weighted Average Grant Date Fair Value, Unvested at April 1, 2020 \| $ / shares	$ 15.06
Weighted Average Grant Date Fair Value, Granted \| $ / shares	11.93
Weighted Average Grant Date Fair Value, Vested \| $ / shares	15.06
Weighted Average Grant Date Fair Value, Unvested at March 31, 2021 \| $ / shares	$ 11.93
Deferred Stock Units DSU [Member] \| Shares to be Received After Leaving Position [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested	(45,704)
Cash Settled Restricted Stock Units CSRSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at April 1, 2020	477,561
Granted	172,524
Canceled	(41,757)
Vested	(173,816)
Unvested at March 31, 2021	434,512
Weighted Average Grant Date Fair Value, Unvested at April 1, 2020 \| $ / shares	$ 14.35
Weighted Average Grant Date Fair Value, Granted \| $ / shares	11.93
Weighted Average Grant Date Fair Value, Canceled \| $ / shares	13.19
Weighted Average Grant Date Fair Value, Vested \| $ / shares	14.39
Weighted Average Grant Date Fair Value, Unvested at March 31, 2021 \| $ / shares	$ 13.49
Performance Stock Units PSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at April 1, 2020	965,689
Granted	1,177,152
Canceled	(84,311)
Unvested at March 31, 2021	2,058,530
Weighted Average Grant Date Fair Value, Unvested at April 1, 2020 \| $ / shares	$ 14.34
Weighted Average Grant Date Fair Value, Granted \| $ / shares	14.26
Weighted Average Grant Date Fair Value, Canceled \| $ / shares	13.75
Weighted Average Grant Date Fair Value, Unvested at March 31, 2021 \| $ / shares	$ 14.32

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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 weighted average fair value at grant date for nonvested equity-based awards issued 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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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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

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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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