Commitments, Contingencies and Other Items (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of operating leases, future minimum payments due and unrecorded unconditional purchase obligation

Future minimum payments for the next five years and thereafter under network and related right-of-way agreements and non-cancelable operating leases for facilities and other assets consist of the following as of December 31, 2017 (dollars in millions):

	Right-of-Way Agreements		Operating Leases	Total	Future Minimum Sublease Receipts
2018	$	173	288	461	3
2019	90		251	341	2
2020	77		217	294	1
2021	60		151	211	1
2022	56		128	184	1
Thereafter	464		507	971	1
	$	920	1,542	2,462	9

Schedule of long-term purchase commitments

The following table summarizes our purchase commitments at December 31, 2017 (dollars in millions):

	2018		2019	2020	2021	2022	Thereafter	Total
Cost of Access Services	$	115	52	35	15	7	2	226
Third-Party Maintenance Services	60		41	32	19	18	68	238
	$	175	93	67	34	25	70	464