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Subsequent Events (Narrative) (Details) - Subsequent Event [Member] | Jul. 19, 2016 USD ($) item $ / shares
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Business Acquisition [Line Items] |
Dividends payable, date declared | Jul. 19, 2016
Dividends payable, cents per share | $ / shares | $ 27.5
Dividends payable, increase in cents | $ | $ 2.0
Dividends payable, increase in percentage | 7.80%
Dividends payable, date of record | Aug. 15, 2016
Dividends payable, date to be paid | Sep. 15, 2016
Dividends payable, number of consecutive quarters increase quarterly cash dividend | item | 21

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