Notes and Contracts Payable (Schedule of Notes and Contracts Payable) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Senior Notes \| 2.40% unsecured notes
Debt Instrument [Line Items]
Senior unsecured notes maturity date	Aug. 15, 2031
Effective interest rate	2.44%
Senior Notes \| 4.00% unsecured notes
Debt Instrument [Line Items]
Senior unsecured notes maturity date	May 15, 2030
Effective interest rate	4.05%
Senior Notes \| 4.60% unsecured notes
Debt Instrument [Line Items]
Senior unsecured notes maturity date	Nov. 15, 2024
Effective interest rate	4.60%
Senior Notes \| 4.30% unsecured notes
Debt Instrument [Line Items]
Senior unsecured notes maturity date	Feb. 01, 2023
Effective interest rate	4.35%
Mortgages
Debt Instrument [Line Items]
Maturity year	Nov. 01, 2023
Collateral value	$ 36	$ 37
Fixed interest rate	5.26%
Notes Payable, Other Payables
Debt Instrument [Line Items]
Other notes and contracts payable maturities in year	2027
Weighted-average interest rate	3.30%	4.21%

Other notes and contracts payable maturities in year.

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- Definition

Amount of assets pledged to secure a debt instrument.

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

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- Definition

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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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

Latest date the outstanding debt instruments are required to be repaid, in YYYY-MM-DD format.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

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