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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Summary of future minimum lease payments

Future minimum lease payments by year and in the aggregate under operating leases and lease financing obligations consist of the following amounts:

	Lease Financing Obligations				Operating Leases				Total
	(In millions)
2018	$	17			$	67			$	84
2019	18				65				83
2020	19				44				63
2021	19				30				49
2022	20				22				42
Thereafter	317				34				351
	$	410			$	262			$	672

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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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