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Commitments and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The table below depicts future gross minimum rental commitments under our operating leases and rights-of-way obligations as of December 31, 2017 (in millions):

Year		Commitment
2018		$	118
2019		106
2020		81
2021		62
2022		55
Thereafter		300
Total minimum payments		$	722

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- References

No definition available.

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- Definition

Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717

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