Notes and Contracts Payable (Tables)

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Schedule of Notes and Contracts Payable

	December 31,
	2022			2021
	(dollars in millions)
2.40% senior unsecured notes due August 15, 2031, effective interest rate of 2.44%	$	650		$	650
4.00% senior unsecured notes due May 15, 2030, effective interest rate of 4.05%		450			450
4.60% senior unsecured notes due November 15, 2024, effective interest rate of 4.60%		300			300
4.30% senior unsecured notes due February 1, 2023, effective interest rate of 4.35%		250			250
Trust deed note due November 1, 2023, collateralized by land and buildings    with net book values of $36 and $37 at December 31, 2022 and 2021,    respectively, fixed interest rate of 5.26%		4			8
Other notes and contracts payable with maturities through 2027, weighted    -average interest rates of 3.30% and 4.21% at December 31, 2022 and 2021,    respectively		4			4
		1,658			1,662
Unamortized discounts and debt issuance costs		(12	)		(14	)
	$	1,646		$	1,648

Aggregate Annual Maturities of Notes and Contracts Payable

The aggregate annual maturities for notes and contracts payable for the next five years and thereafter are summarized as follows:

Year	Annual maturities
	(in millions)
2023	$	256
2024		301
2025		1
2026		—
2027		—
Thereafter		1,100
	$	1,658