XML 54 R45.htm IDEA: XBRL DOCUMENT
v3.5.0.2

SHARE REPURCHASE PROGRAMS (Shares Repurchased under Programs) (Detail) $ in Millions | 3 Months Ended
--- | ---
Sep. 30, 2016 USD ($) shares
Stock Repurchase Programs Total |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 14,099,523
Total Cost | $ | $ 522.1
Authorized on November 15, 2006 |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 908,399
Total Cost | $ | $ 35.0
Authorized on May 13, 2008 |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 1,027,417
Total Cost | $ | $ 50.0
Authorized on November 11, 2009 |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 972,205
Total Cost | $ | $ 50.0
Authorized on August 11, 2010 |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 1,103,628
Total Cost | $ | $ 50.0
Authorized on November 10, 2010 |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 968,105
Total Cost | $ | $ 50.0
Authorized on May 20, 2011 |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 2,396,143
Total Cost | $ | $ 100.0
Authorized on November 2, 2011 |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 3,478,299
Total Cost | $ | $ 100.0
Authorized On August 29, 2012 |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 2,005,317
Total Cost | $ | $ 62.7
Authorized On December 15, 2015 |
Share Repurchases [Line Items] |
Shares Repurchased | shares | 1,240,010
Total Cost | $ | $ 24.4

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_StockRepurchaseProgramsTotalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_AuthorizedOnNovemberFifteenTwoThousandSixMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_AuthorizedOnMayThirteenTwoThousandEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_AuthorizedOnNovemberElevenTwoThousandNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_AuthorizedOnAugustElevenTwoThousandTenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_AuthorizedOnNovemberTenTwoThousandTenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_AuthorizedOnMayTwentyTwoThousandElevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_AuthorizedOnNovemberSecondTwoThousandElevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_AuthorizedOnAugustTwentyNineTwoThousandTwelveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dv_AuthorizedOnDecemberFifteenTwoThousandFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |