Goodwill and Intangible Assets - Estimated Fair Values of Reporting Units, Discounted Cash Flow Inputs (Details) - Goodwill - Income approach	1 Months Ended
	Nov. 30, 2015	Nov. 30, 2014
Discounted Cash Flow Inputs [Line Items]
Perpetual growth rate	3.00%	3.00%
Risk-free rate	2.60%	2.60%
Minimum
Discounted Cash Flow Inputs [Line Items]
Discount rate	11.00%	12.00%
Tax rate	13.50%	10.10%
Peer company beta	1.2	1.0
Maximum
Discounted Cash Flow Inputs [Line Items]
Discount rate	24.00%	15.00%
Tax rate	40.00%	28.10%
Peer company beta	1.9	1.8