Intangibles (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

Intangible assets were:

	December 31,
	2023		2022
	(in millions)
Air rights contract	45		45
Other	4		7
Accumulated amortization	(7)		(9)
	$	42	$	43

Finite-Lived Intangible Assets Amortization Expense

As of December 31, 2023, we estimated our future amortization expense for our intangible assets to be:

Year	(in millions)
2024	$	1
2025	1
2026	1
2027	1
2028	1
Thereafter	37
	$	42