Face (par) amount of debt instrument at time of issuance.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Debt and Credit Facility - Senior Secured Notes (Details) - USD ($)	12 Months Ended
	Mar. 31, 2019	May 31, 2018	Mar. 31, 2018	Feb. 28, 2017
Debt Instrument [Line Items]
Debt issuance costs, net	$ 83,600,000	$ 24,400,000	$ 40,100,000	$ 33,700,000
Debt instrument, unamortized discount	$ 1,268,700,000	10,500,000	$ 1,372,900,000
Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	101.00%
2021 Senior Secured Notes
Debt Instrument [Line Items]
Debt instrument, face amount		$ 1,000,000,000.00
Debt instrument, interest rate, stated percentage	3.922%	3.922%
Debt issuance costs, net	$ 8,800,000
Debt instrument, unamortized discount	$ 3,800,000
Effective interest rate		3.922%
Debt instrument, redemption price, percentage	100.00%
Senior Secured Notes, 2023
Debt Instrument [Line Items]
Debt instrument, face amount		$ 1,000,000,000.00
Debt instrument, interest rate, stated percentage	4.333%	4.333%
Debt issuance costs, net	$ 10,200,000
Debt instrument, unamortized discount	$ 4,400,000
Effective interest rate		4.333%
Senior Secured Notes, 2023 \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100.00%
Senior Secured Notes, 2023 \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100.00%