Intangible Asset, Net (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Components of Intangible Assets, Net of Accumulated Amortization

Intangible assets, net of accumulated amortization, consisted of the following (in millions):

		December 31, 2023						December 31, 2022
	Estimated Useful Lives (Years)	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
Customer contracts and relationships	1 – 29	$	2,789	$	(932)	$	1,857	$	2,817	$	(695)	$	2,122
Other agreements	15 – 70	30		(12)		18		35		(12)		23
Intangible assets (1)		$	2,819	$	(944)	$	1,875	$	2,852	$	(707)	$	2,145

(1)We include rights-of-way, which are intangible assets, within property and equipment. See Note 6 for a discussion of property and equipment.

Schedule of Estimated Amortization Expense Related to Finite-lived Intangible Assets for the next Five Years

We estimate that our amortization expense related to finite-lived intangible assets for the next five years will be as follows (in millions):

2024	$	272
2025	$	249
2026	$	210
2027	$	187
2028	$	165