Date the declared dividend will be paid, in CCYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

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- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

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- Definition

Amount of stock repurchase plan authorized.

+ References

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- Definition

Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Billions	Mar. 16, 2016	Feb. 18, 2016	Mar. 07, 2013
Subsequent Events
Period over which shares may be purchased under share repurchase program (in years)			5 years
Authorized aggregate repurchases of common stock			$ 1
Subsequent Events
Subsequent Events
Declaration date		Feb. 18, 2016
Payment date		Mar. 31, 2016
Record date		Mar. 11, 2016
Period over which shares may be purchased under share repurchase program (in years)	5 years
Authorized aggregate repurchases of common stock	$ 1
Subsequent Events \| Common Stock
Subsequent Events
Dividend amount (in dollars per share)		$ 0.15125
Subsequent Events \| Class B Common Stock
Subsequent Events
Dividend amount (in dollars per share)		$ 0.15125