| Component: (Network and Table) | |
|---|---|
| Network | 100540 - Disclosure - Other Long-Term Liabilities (Tables) (http://www.armstrong.com/20161231/taxonomy/role/DisclosureOtherLongTermLiabilitiesTables) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000007431 (http://www.sec.gov/CIK) |
| Other Liabilities Disclosure [Abstract] | Period [Axis] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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2016-01-01 - 2016-12-31 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Other Liabilities Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of Other Long-Term Liabilities |
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