Acquisitions (Narrative) (Details) - Tabacalera Costarricense, S.A. And Mendiola Y Campania, S.A. Purchase Of Noncontrolling Interest [Member] $ in Millions	Mar. 21, 2018 USD ($)
Business Acquisition [Line Items]
Interest acquired	49.00%
Net purchase price	$ 95
Contingent consideration	$ 2
Ownership percentage	100.00%
Decrease to additional paid-in capital	$ 86

Amount of other increase (decrease) in additional paid in capital (APIC).

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

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