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2405402 - Disclosure - Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprrehensive Income (Details)
(http://www.dnb.com/role/AccumulatedOtherComprehensiveIncomeLossAccumulatedOtherComprrehensiveIncomeDetails)
TableAccumulated Other Comprehensive Income (Loss) [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001115222 (http://www.sec.gov/CIK)
Accumulated Other Comprehensive Income (Loss) [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Equity Components [Axis]Equity Components [Axis]Equity Components [Axis]
Accumulated Translation Adjustment [Member]Accumulated Defined Benefit Plans Adjustment [Member]Equity Component [Domain]Accumulated Translation Adjustment [Member]Accumulated Defined Benefit Plans Adjustment [Member]Equity Component [Domain]Accumulated Translation Adjustment [Member]Accumulated Defined Benefit Plans Adjustment [Member]Equity Component [Domain]
Accumulated Other Comprehensive Income [Roll Forward]
 
 
 
 
 
 
 
 
 
Accumulated Other Comprehensive Income (Loss), beginning balance
(291,700,000) 
(673,800,000) 
(965,500,000) 
(233,400,000) 
(688,700,000) 
(922,100,000) 
   
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
(64,000,000) 
(33,400,000) 
(97,400,000) 
(85,100,000) 
(9,900,000) 
(95,000,000) 
   
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
89,500,000  
23,800,000  
113,300,000  
26,800,000  
24,800,000  
51,600,000  
 
20,400,000  
20,400,000  
Accumulated Other Comprehensive Income (Loss), Ending Balance
(266,200,000) 
 
(683,400,000) 
 
(949,600,000) 
 
(291,700,000) 
 
(673,800,000) 
 
(965,500,000) 
 
(233,400,000) 
 
(688,700,000) 
 
(922,100,000)