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Senior Notes Payable (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Senior Notes Payable [Abstract]
Issue price per note	$ 1
Redemption price percent	100.00%
Issuance of senior notes	$ 1,428,000
Redemptions of senior notes	$ 1,524,000
Weighted average interest rate	1.00%
Notes payable	$ 0	$ 96,000
Interest rate per annum	1.00%	1.00%
Interest expense on short-term borrowings	$ 1,000

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Debt, Issue Price Per Note

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- Definition

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

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The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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The cash inflow from a borrowing having initial term of repayment within three months.

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The cash outflow from a repayment of a borrowing having initial term of repayment within three months.

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The portion of the carrying amount of short-term borrowings outstanding as of the balance sheet date which accrues interest at a set, unchanging rate.

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Weighted average interest rate of short-term debt outstanding calculated over time.

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