Shareholders' Equity Repurchase Activity (Details) shares in Millions, $ in Billions	Mar. 31, 2016 USD ($) shares
Class of Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 5.7
Treasury Stock Shares Acquired From Inception \| shares	201
Treasury Stock Value Acquired Cost Method From Inception	$ 8.4

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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