Shareholder Report, Average Annual Return (Details)	12 Months Ended	60 Months Ended	120 Months Ended
Shareholder Report, Average Annual Return (Details)	Jul. 31, 2026	Jul. 31, 2026	Jul. 31, 2026
C000133805_3_BBIndexMember_1YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent	22.46%
C000133805_3_BBIndexMember_5YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent		11.21%
C000133805_3_BBIndexMember_10YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent			12.72%
C000133805_NoLoadClassMember_1YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent	29.06%
C000133805_NoLoadClassMember_5YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent		9.63%
C000133805_NoLoadClassMember_10YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent			7.02%
C000133805_0_AdditionalIndexMember_1YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent	28.30%
C000133805_0_AdditionalIndexMember_5YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent		9.36%
C000133805_0_AdditionalIndexMember_10YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent			6.57%
C000133805_1_AdditionalIndexMember_1YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent	28.40%
C000133805_1_AdditionalIndexMember_5YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent		11.31%
C000133805_1_AdditionalIndexMember_10YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent			8.91%
C000133805_2_AdditionalIndexMember_1YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent	35.53%
C000133805_2_AdditionalIndexMember_5YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent		10.57%
C000133805_2_AdditionalIndexMember_10YRMember
Average Annual Return [Line Items]
Average Annual Return, Percent			7.16%