PROPOSED ACQUISITION OF VIRGIN AMERICA INC. (Details) - Virgin America Inc. [Member] $ / shares in Units, $ in Billions	Apr. 01, 2016 USD ($) $ / shares
Business Acquisition [Line Items]
Approximate Acquisition purchase price \| $	$ 2.6
Common Stock [Member]
Business Acquisition [Line Items]
Acquisition share price \| $ / shares	$ 57

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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