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Schedule II - Valuation And Qualifying Accounts (FY) | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Valuation And Qualifying Accounts | SCHEDULE II WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATION VALUATION AND QUALIFYING ACCOUNTS For each of the three years ended December 31
In thousands |  | Balance at beginning of period |  |  | Charged/ (credited) to expense |  |  | Charged/ (credited) to other accounts (1) |  |  | Deductions from reserves (2) |  |  | Balance at end of period |
2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warranty and overhaul reserves |  | $ | 138,992 |  |  | $ | 50,385 |  |  | $ | 12,234 |  |  | $ | 48,548 |  |  | $ | 153,063 |
Allowance for doubtful accounts |  |  | 7,340 |  |  |  | 2,632 |  |  |  | 4,979 |  |  |  | 2,609 |  |  |  | 12,342 |
Valuation allowance-taxes |  |  | 21,418 |  |  |  | 6,760 |  |  |  | — |  |  |  | 10,024 |  |  |  | 18,154 |
2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warranty and overhaul reserves |  | $ | 92,064 |  |  | $ | 28,947 |  |  | $ | 56,753 |  |  | $ | 38,772 |  |  | $ | 138,992 |
Allowance for doubtful accounts |  |  | 5,614 |  |  |  | 3,635 |  |  |  | — |  |  |  | 1,909 |  |  |  | 7,340 |
Valuation allowance-taxes |  |  | 12,623 |  |  |  | 3,405 |  |  |  | 5,390 |  |  |  | — |  |  |  | 21,418 |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warranty and overhaul reserves |  | $ | 87,849 |  |  | $ | 35,418 |  |  | $ | (1,762 | ) |  | $ | 29,441 |  |  | $ | 92,064 |
Allowance for doubtful accounts |  |  | 6,270 |  |  |  | 2,026 |  |  |  | — |  |  |  | 2,682 |  |  |  | 5,614 |
Valuation allowance-taxes |  |  | 1,818 |  |  |  | 7,024 |  |  |  | 3,781 |  |  |  | — |  |  |  | 12,623 |
| (1) | Reserves of acquired/(sold) companies; valuation allowances for state and foreign deferred tax assets; impact of fluctuations in foreign currency exchange rates.
| (2) | Actual disbursements and/or charges.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- References No definition available. + Details
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