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SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS | 12 Months Ended
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Dec. 31, 2016
Valuation and Qualifying Accounts [Abstract] |
SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS | SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS for the years ended December 31, 2016, 2015 and 2014
|  | (In Millions) |
Column A |  | Column B |  | Column C |  |  | Column D |  |  | Column E
|  |  |  | Additions |  |  |  |  |  |
Description |  | Balance at Beginning of Period |  | Charged to Costs and Expenses |  | Charged to Other Accounts |  |  | Deductions |  |  | Balance at End of Period
Allowances for doubtful accounts, deducted from accounts receivable in the balance sheet (d): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 |  | $ | 11 |  |  | $ | 4 |  |  | $ | — |  |  |  | $ | (4 | ) |  | (a) | $ | 11 |
2015 |  | $ | 14 |  |  | $ | 4 |  |  | $ | — |  |  |  | $ | (7 | ) |  | (a) | $ | 11 |
2014 |  | $ | 22 |  |  | $ | 3 |  |  | $ | — |  |  |  | $ | (11 | ) |  | (a) | $ | 14 |
Valuation allowance on deferred tax assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 |  | $ | 49 |  |  | $ | 11 |  |  | $ | (15 | ) |  | (b) | $ | — |  |  |  | $ | 45 |
2015 |  | $ | 66 |  |  | $ | 36 |  |  | $ | (53 | ) |  | (c) | $ | — |  |  |  | $ | 49 |
2014 |  | $ | 662 |  |  | $ | (539 | ) |  | $ | (57 | ) |  | (b) | $ | — |  |  |  | $ | 66 |
(a) | Deductions, representing uncollectible accounts written off, less recoveries of accounts written off in prior years.
(b) | Write off $13 million and $55 million of deferred tax assets on certain state and local net operating loss carryforwards against the valuation allowance, during 2016 and 2014, respectively, as it was determined that there was only a remote likelihood that such carryforwards could be utilized; and $2 million adjustment to the valuation allowance was recorded primarily in other comprehensive income (loss) in both 2016 and 2014.
(c) | Valuation allowance on deferred tax assets allocated to TopBuild due to its spin off into a separate stand-alone company on June 30, 2015.
(d) | Amounts exclude discontinued operations.

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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 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- References No definition available. + Details
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