| Component: (Network and Table) | |
|---|---|
| Network | 100400 - Disclosure - Accounts and Notes Receivable (Tables) (http://www.armstrong.com/20161231/taxonomy/role/DisclosureAccountsAndNotesReceivableTables) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000007431 (http://www.sec.gov/CIK) |
| Receivables [Abstract] | Period [Axis] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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2016-01-01 - 2016-12-31 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Receivables [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of Accounts and Notes Receivable |
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