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Leases (Tables)

12 Months Ended

Dec. 31, 2017

Operating Leases of Lessee Disclosure [Table Text Block]

Future minimum rental commitments as of December 31, 2017 under all noncancellable lease agreements, including capital leases, were as follows:



(in millions)	As of December 31, 2017
2018	$	72
2019	52
2020	40
2021	33
2022	28
Thereafter	93

	$	317

Future minimum purchase obligations as of December 31, 2017, were as follows:



(in millions)	As of December 31, 2017
2018	$	262
2019	26
2020	15
2021	13
2022	5
Thereafter	6
	$	327

- Definition

Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

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