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

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- Definition

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

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

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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Debt - $600 Million 4.50% Senior Notes (Details) - USD ($)	Feb. 17, 2021	Sep. 30, 2021	Mar. 31, 2021	Feb. 09, 2021
$600 Million 4.50% Senior Notes [Member]
Debt Instrument [Line Items]
Face amount		$ 600,000,000.0
Senior Notes [Member] \| $400 Million 5% Senior Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 400,000,000			$ 400,000,000
Stated interest rate (as a percent)	5.00%	5.00%		5.00%
Senior Notes [Member] \| $600 Million 4.50% Senior Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 600,000,000.0	$ 600,000,000
Stated interest rate (as a percent)	4.50%	4.50%
Redemption price (as a percent)	100.00%
Proceeds from Issuance of Debt	$ 591,000,000
Senior Notes [Member] \| $600 Million 4.50% Senior Notes [Member] \| Redemption Period One [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	102.25%
Senior Notes [Member] \| $600 Million 4.50% Senior Notes [Member] \| Redemption Period Two [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	101.50%
Senior Notes [Member] \| $600 Million 4.50% Senior Notes [Member] \| Redemption Period Three [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	100.75%
Senior Notes [Member] \| $600 Million 4.50% Senior Notes [Member] \| Redemption Period Four [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	100.00%
Senior Notes [Member] \| $700 Million 4.75% Senior Note [Member]
Debt Instrument [Line Items]
Face amount		$ 700,000,000	$ 700,000,000
Stated interest rate (as a percent)		4.75%	4.75%