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Goodwill (Narrative) (Details) | 3 Months Ended
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Sep. 30, 2015
Assumed annual compound growth rate after five or ten years | 4.03%
Minimum [Member] |
Weighted average cost of capital assumption | 9.49%
Maximum [Member] |
Weighted average cost of capital assumption | 12.83%

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- Definition Annual compound growth rate after 5 years assumption used to calculate the terminal value of the forecasted cash flows for the annual goodwill impairment test. + References No definition available. + Details
Name: | wwd_AnnualCompoundGrowthRate
Namespace Prefix: | wwd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Weighted average cost of capital assumption used to discount forecasted cash flows for the annual goodwill impairment test + References No definition available. + Details
Name: | wwd_WeightedAverageCostOfCapitalAssumptionRate
Namespace Prefix: | wwd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |