Dun & Bradstreet 10-Q 7 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014
Document Type	'10-Q
Amendment Flag	'false
Document Period End Date	31-Mar-14
Document Fiscal Year Focus	'2014
Document Fiscal Period Focus	'Q1
Trading Symbol	'DNB
Entity Registrant Name	'DUN & BRADSTREET CORP/NW
Entity Central Index Key	'0001115222
Current Fiscal Year End Date	'--12-31
Entity Filer Category	'Large Accelerated Filer
Entity Common Stock, Shares Outstanding	37,016,091

Consolidated_Statements_of_Ope

Consolidated Statements of Operations and Comprehensive Income (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Revenue	$381.90		$381
Operating Expenses	128.3		126.2
Selling and Administrative Expenses	150.5		146.4
Depreciation and Amortization	15.9		18.3
Restructuring Charge	4.9		2.3
Operating Costs	299.6		293.2
Operating Income	82.3		87.8
Interest Income	0.4		0.2
Interest Expense	-10.6		-9.9
Other Income (Expense) - Net	-23.3	[1]	-1.2	[1]
Non-Operating Income (Expense) - Net	-33.5	[2]	-10.9	[2]
Income Before Provision for Income Taxes and Equity in Net Income of Affiliates	48.8		76.9
Less: Provision for Income Taxes	-36.7		23.8
Equity in Net Income of Affiliates	0.5		0.5
Net Income	86		53.6
Less: Net (Income) Loss Attributable to the Noncontrolling Interest	-0.7		-0.7
Net Income Attributable to D&B	85.3		52.9
Basic Earnings Per Share of Common Stock Attributable to D&B Common Shareholders	$2.28		$1.30
Diluted Earnings Per Share of Common Stock Attributable to D&B Common Shareholders	$2.26		$1.29
Weighted Average Number of Shares Outstanding-Basic	37.4		40.6
Weighted Average Number of Shares Outstanding-Diluted	37.7		40.9
Cash Dividend Paid Per Common Share	$0.44		$0.40
Other Comprehensive Income, Net of Tax	'		'
Net Income (from above)	86		53.6
Foreign Currency Translation Adjustments, no Tax Impact	-3.4		-12.3
Defined Benefit Pension Plans:	'		'
Prior Service Costs, Net of Tax Income (Expense) (1)	-0.2	[3]	-1.5	[3]
Net Actuarial Gain (Loss), Net of Tax Income (Expense) (2)	5.6	[4]	7	[4]
Comprehensive Income, Net of Tax	88		46.8
Less: Comprehensive (Income) Loss Attributable to the Noncontrolling Interest	-0.8		-0.8
Comprehensive Income Attributable to D&B	$87.20		$46
[1]	The increase in Other Expense was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moody’s Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.
[2]	The following table summarizes “Non-Operating Income (Expense):” For the Three Months Ended March 31, 2014 2013Interest Income$0.4 $0.2Interest Expense(10.6) (9.9)Other Income (Expense) - Net (a)(23.3) (1.2)Non-Operating Income (Expense) - Net$(33.5) $(10.9) (a) The increase in Other Expense was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moody’s Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.
[3]	Tax Income (Expense) of $0.1 million and $0.7 million during the three months ended March 31, 2014 and 2013, respectively.
[4]	Tax Income (Expense) of $(3.0) million and $(3.5) million during the three months ended March 31, 2014 and 2013, respectively.

Consolidated_Statements_of_Ope1

Consolidated Statements of Operations and Comprehensive Income (Parenthetical) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Prior Service Costs, Tax Income (Expense)	$0.10	$0.70
Net Loss, Tax Income (Expense)	($3)	($3.50)

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current Assets	'	'
Cash and Cash Equivalents	$268.30	$235.90
Accounts Receivable, Net of Allowance of $23.9 at March 31, 2014 and $23.9 at December 31, 2013	451.6	518.5
Other Receivables	5.6	6.3
Prepaid Taxes	6.8	9.1
Deferred Income Tax	12.7	14
Other Prepaids	28.1	30.3
Other Current Assets	8.3	8.3
Total Current Assets	781.4	822.4
Non-Current Assets	'	'
Property, Plant and Equipment, Net of Accumulated Depreciation of $84.7 at March 31, 2014 and $83.9 at December 31, 2013	39.9	39.6
Computer Software, Net of Accumulated Amortization of $488.5 at March 31, 2014 and $474.1 at December 31, 2013	105.8	107.9
Goodwill	585.6	589.1
Deferred Income Tax	147.1	148.4
Other Receivables	20.3	45.6
Other Intangibles	72.3	76.7
Other Non-Current Assets	54.8	60.6
Total Non-Current Assets	1,025.80	1,067.90
Total Assets	1,807.20	1,890.30
Current Liabilities	'	'
Accounts Payable	48.8	41.4
Accrued Payroll	64	86.4
Accrued Income Tax	9.8	7.5
Short-Term Debt	0.1	0.1
Other Accrued And Current Liabilities (Note 6)	116	116.1
Deferred Revenue	628.2	600.8
Total Current Liabilities	866.9	852.3
Pension and Postretirement Benefits	385.7	394.1
Long-Term Debt	1,513.80	1,516
Liabilities for Unrecognized Tax Benefits	45.9	108
Other Non-Current Liabilities	56.8	62.2
Total Liabilities	2,869.10	2,932.60
Contingencies (Note 7)	'	'
D&B SHAREHOLDERS' EQUITY (DEFICIT)	'	'
Capital Surplus	269.6	270
Retained Earnings	2,669.80	2,600.90
Treasury Stock, at cost, 44.9 shares at March 31, 2014 and 44.1 shares at December 31, 2013	-3,272.10	-3,181.30
Accumulated Other Comprehensive Income (Loss)	-736.8	-738.8
Total D&B Shareholders' Equity (Deficit)	-1,068.70	-1,048.40
Noncontrolling Interest	6.8	6.1
Total Equity (Deficit)	-1,061.90	-1,042.30
Total Liabilities and Shareholders' Equity (Deficit)	1,807.20	1,890.30
Series A Junior Participating Preferred Stock	'	'
D&B SHAREHOLDERS' EQUITY (DEFICIT)	'	'
Preferred Stock	0	0
Preferred Stock	'	'
D&B SHAREHOLDERS' EQUITY (DEFICIT)	'	'
Preferred Stock	0	0
Series Common Stock	'	'
D&B SHAREHOLDERS' EQUITY (DEFICIT)	'	'
Common Stock	0	0
Common Stock	'	'
D&B SHAREHOLDERS' EQUITY (DEFICIT)	'	'
Common Stock	$0.80	$0.80

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, except Per Share data, unless otherwise specified
Accounts Receivable, Allowance	$23.90	$23.90
Property, Plant and Equipment, Accumulated Depreciation	84.7	83.9
Computer Software, Accumulated Amortization	$488.50	$474.10
Treasury Stock, shares	44.9	44.1
Series A Junior Participating Preferred Stock	'	'
Preferred Stock, par value per share	$0.01	$0.01
Preferred Stock, authorized	0.5	0.5
Preferred Stock, outstanding	0	0
Preferred Stock	'	'
Preferred Stock, par value per share	$0.01	$0.01
Preferred Stock, authorized	9.5	9.5
Preferred Stock, outstanding	0	0
Series Common Stock	'	'
Common Stock, par value per share	$0.01	$0.01
Common Stock, authorized	10	10
Series Common Stock, outstanding	0	0
Common Stock	'	'
Common Stock, par value per share	$0.01	$0.01
Common Stock, authorized	200	200
Common Stock, issued	81.9	81.9

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash Flows from Operating Activities:	'	'
Net Income	$86	$53.60
Reconciliation of Net Income to Net Cash Provided by Operating Activities:	'	'
Depreciation and Amortization	15.9	18.3
Amortization of Unrecognized Pension Loss	8.3	8.3
Income Tax Benefit from Stock-Based Awards	3	2.5
Excess Tax Benefit on Stock-Based Awards	-1.1	-0.5
Equity Based Compensation	2	3.4
Restructuring Charge	4.9	2.3
Restructuring Payments	-5.9	-4
Changes in Deferred Income Taxes, Net	-62	0
Changes in Accrued Income Taxes, Net	5.7	3.5
Changes in Current Assets and Liabilities:	'	'
(Increase) Decrease in Accounts Receivable	68.2	83.3
(Increase) Decrease in Other Current Assets	2	11.6
Increase (Decrease) in Deferred Revenue	26.6	26.7
Increase (Decrease) in Accounts Payable	9.1	1.5
Increase (Decrease) in Accrued Liabilities	-25.4	-37.9
Increase (Decrease) in Other Accrued & Current Liabilities	9.1	9.1
Changes in Non-Current Assets and Liabilities:	'	'
(Increase) Decrease in Other Long-Term Assets	27.9	-4.3
Net Increase (Decrease) in Long-Term Liabilities	-14.8	-6.3
Net, Other Non-Cash Adjustments	1	1.2
Net Cash Provided by Operating Activities	160.5	172.3
Cash Flows from Investing Activities:	'	'
Cash Settlements of Foreign Currency Contracts	-4.7	-5.5
Capital Expenditures	-2.3	-3
Additions to Computer Software and Other Intangibles	-9.7	-13.4
Net, Other	0	-0.1
Net Cash Used in Investing Activities	-16.7	-22
Cash Flows from Financing Activities:	'	'
Payments for Purchases of Treasury Shares	-98	-121
Net Proceeds from Stock-Based Awards	1.5	2.9
Payments of Dividends	-16.3	-16.1
Proceeds from Borrowings on Credit Facilities	116.4	152.1
Payments of Borrowings on Credit Facilities	-118.4	-139.9
Excess Tax Benefit on Stock-Based Awards	1.1	0.5
Net Cash Used in Financing Activities	-113.7	-121.5
Effect of Exchange Rate Changes on Cash and Cash Equivalents	2.3	-5.1
Increase (Decrease) in Cash and Cash Equivalents	32.4	23.7
Cash and Cash Equivalents, Beginning of Period	235.9	149.1
Cash and Cash Equivalents, End of Period	268.3	172.8
Cash Paid for:	'	'
Income Taxes, Net of Refunds	16.6	17.8
Interest	$1.30	$0.70

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (Deficit) (USD $)	Total	Common Stock ($0.01 Par Value)	Capital Surplus	Retained Earnings	Treasury Stock	Cumulative Translation Adjustment	Minimum Pension Liability Adjustment	Derivative Financial Instrument	Total D&B Shareholders' Equity (Deficit)	Noncontrolling Interest
In Millions, unless otherwise specified
Beginning Balance at Dec. 31, 2012	($1,014.30)	$0.80	$261.70	$2,405.50	($2,833.30)	($151.20)	($701)	$0.10	($1,017.40)	$3.10
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'	'	'
Net Income	53.6	0	0	52.9	0	0	0	0	52.9	0.7
Equity-Based Plans	7.9	0	-0.4	0	8.3	0	0	0	7.9	0
Treasury Shares Acquired	-121	0	0	0	-121	0	0	0	-121	0
Pension Adjustments, net of tax of $2.9 in 2014 and $2.8 in 2013	5.5	0	0	0	0	0	5.5	0	5.5	0
Dividend Declared	-16.4	0	0	-16.4	0	0	0	0	-16.4	0
Change in Cumulative Translation Adjustment	-12.3	0	0	0	0	-12.4	0	0	-12.4	0.1
Ending Balance at Mar. 31, 2013	-1,097	0.8	261.3	2,442	-2,946	-163.6	-695.5	0.1	-1,100.90	3.9
Beginning Balance at Dec. 31, 2013	-1,042.30	0.8	270	2,600.90	-3,181.30	-186.7	-552.2	0.1	-1,048.40	6.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'	'	'
Net Income	86	0	0	85.3	0	0	0	0	85.3	0.7
Equity-Based Plans	6.8	0	-0.4	0	7.2	0	0	0	6.8	0
Treasury Shares Acquired	-98	0	0	0	-98	0	0	0	-98	0
Pension Adjustments, net of tax of $2.9 in 2014 and $2.8 in 2013	5.4	0	0	0	0	0	5.4	0	5.4	0
Dividend Declared	-16.4	0	0	-16.4	0	0	0	0	-16.4	0
Change in Cumulative Translation Adjustment	-3.4	0	0	0	0	-3.4	0	0	-3.4	0
Ending Balance at Mar. 31, 2014	($1,061.90)	$0.80	$269.60	$2,669.80	($3,272.10)	($190.10)	($546.80)	$0.10	($1,068.70)	$6.80

Consolidated_Statements_of_Sha1

Consolidated Statements of Shareholders' Equity (Deficit) (Parenthetical) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Pension Adjustments, tax	$2.90	$2.80

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	These interim unaudited consolidated financial statements have been prepared in accordance with the instructions to the Quarterly Report on Form 10-Q. They should be read in conjunction with the consolidated financial statements and related notes, which appear in The Dun & Bradstreet Corporation’s (“D&B” or “we” or “our” or "us" or the “Company”) Annual Report on Form 10-K for the year ended December 31, 2013. The unaudited consolidated results for interim periods do not include all disclosures required by accounting principles generally accepted in the United States of America (“GAAP”) for annual financial statements and are not necessarily indicative of results for the full year or any subsequent period. In the opinion of our management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair statement of the unaudited consolidated financial position, results of operations and cash flows at the dates and for the periods presented have been included.
	All inter-company transactions have been eliminated in consolidation.
	The financial statements of the subsidiaries outside North America reflect results for the three months ended February 28 in order to facilitate the timely reporting of the unaudited consolidated financial results and unaudited consolidated financial position.
	Where appropriate, we have reclassified certain prior year amounts to conform to the current year presentation.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In April 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-08, "Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity" which changes the requirements for reporting discontinued operations by limiting it to disposals representing a strategic shift that has or will have a major effect on the entity’s operations and financial results. An entity will be required to: (i) present the assets and liabilities of a disposal group that includes a discontinued operation separately in the statement of financial position; and (ii) expand disclosures about the discontinued operations. The authoritative guidance is effective for fiscal years and the interim periods within those fiscal years beginning on or after December 15, 2014 and should be applied on a prospective basis. We do not expect that the adoption of this authoritative guidance will have a material impact on our consolidated financial statements.
	In July 2013, the FASB issued ASU No. 2013-11, "Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss or a Tax Credit Carryforward Exists (a consensus of the Emerging Issues Task Force)," which states that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. If a company does not have: (i) a net operating loss carryforward; (ii) a similar tax loss; or (iii) a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position, or the entity does not intend to use the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The authoritative guidance is effective for fiscal years and the interim periods within those fiscal years beginning on or after December 15, 2013 and should be applied on a prospective basis. The adoption of this authoritative guidance did not have a material impact on the consolidated financial statements.
	In March 2013, the FASB issued ASU No. 2013-5, "Foreign Currency Matters (Topic 830): Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity (a consensus of the FASB Emerging Issues Task Force)," which states that a cumulative translation adjustment ("CTA") is attached to the parent’s investment in a foreign entity and should be released in a manner consistent with the derecognition guidance on investments in entities. The entire amount of the CTA associated with the foreign entity would be released when there has been a: (i) sale of a subsidiary or group of net assets within a foreign entity and the sale represents the substantially complete liquidation of the investment in the foreign entity; (ii) loss of a controlling financial interest in an investment in a foreign entity; and (iii) step acquisition for a foreign entity. The authoritative guidance does not change the requirement to release a pro rata portion of the CTA of the foreign entity into earnings for a partial sale of an equity method investment in a foreign entity. The authoritative guidance is effective for fiscal years and the interim periods within those fiscal years beginning on or after December 15, 2013 and should be applied on a prospective basis. The adoption of this authoritative guidance did not have a material impact on the consolidated financial statements.

Restructuring_Charge

Restructuring Charge	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Restructuring Charge	'
	Restructuring Charge
	We incurred restructuring charges which generally consist of employee severance and termination costs, contract terminations and/or costs to terminate lease obligations less assumed sublease income. These charges were incurred as a result of eliminating, consolidating, standardizing and/or automating our business functions.
	Restructuring charges have been recorded in accordance with ASC 712-10, “Nonretirement Postemployment Benefits,” or “ASC 712-10” and/or ASC 420-10, “Exit or Disposal Cost Obligations,” or “ASC 420-10,” as appropriate.
	We record severance costs (provided under an ongoing benefit arrangement) once they are both probable and estimable in accordance with the provisions of ASC 712-10.
	We account for one-time termination benefits, contract terminations and/or costs to terminate lease obligations less assumed sublease income in accordance with ASC 420-10, which addresses financial accounting and reporting for costs associated with restructuring activities. Under ASC 420-10, we establish a liability for costs associated with an exit or disposal activity, including severance and lease termination obligations, and other related costs, when the liability is incurred, rather than at the date that we commit to an exit plan. We reassess the expected cost to complete the exit or disposal activities at the end of each reporting period and adjust our remaining estimated liabilities, if necessary.
	The determination of when we accrue for severance costs and which standard applies depends on whether the termination benefits are provided under an ongoing arrangement as described in ASC 712-10 or under a one-time benefit arrangement as defined by ASC 420-10. Inherent in the estimation of the costs related to the restructurings are assessments related to the most likely expected outcome of the significant actions to accomplish the exit activities. In determining the charges related to the restructurings, we had to make estimates related to the expenses associated with the restructurings. These estimates may vary significantly from actual costs depending, in part, upon factors that may be beyond our control. We will continue to review the status of our restructuring obligations on a quarterly basis and, if appropriate, record changes to these obligations in current operations based on management’s most current estimates.
	Three Months Ended March 31, 2014 vs. Three Months Ended March 31, 2013
	During the three months ended March 31, 2014, we recorded a $4.9 million restructuring charge. The significant components of this charge included:
	•	Severance and termination costs of $4.7 million in accordance with the provisions of ASC 712-10 were recorded. Approximately 55 employees were impacted. Of these 55 employees, approximately 30 employees exited the Company in the first quarter of 2014, with the remaining primarily to exit in the second quarter of 2014. The cash payments for these employees will be substantially completed by the fourth quarter of 2014; and
	•	Contract termination, lease termination obligations, other exit costs including those to consolidate or close facilities of $0.2 million.
	During the three months ended March 31, 2013, we recorded a $2.3 million restructuring charge. The significant components of this charge included:
	•	Severance and termination costs of $0.6 million in accordance with the provisions of ASC 712-10 were recorded. Approximately 45 employees were impacted. Of these 45 employees, approximately 40 employees exited the Company in the first quarter of 2013, with the remaining primarily having exited in the second quarter of 2013. The cash payments for these employees were substantially completed by the third quarter of 2013; and
	•	Contract termination, lease termination obligations, other exit costs including those to consolidate or close facilities of $1.7 million.
	The following tables set forth, in accordance with ASC 712-10 and/or ASC 420-10, the restructuring reserves and utilization:
		Severance			Contract Termination, Lease			Total
		and			Termination
		Termination			Obligations
					and Other
					Exit Costs
	Restructuring Charges:
	Balance Remaining as of December 31, 2013	$	5.8		$	4.6		$	10.4
	Charge Taken during First Quarter 2014	4.7			0.2			4.9
	Payments during First Quarter 2014	(2.0		)	(3.9		)	(5.9		)
	Balance Remaining as of March 31, 2014	$	8.5		$	0.9		$	9.4
		Severance			Contract Termination, Lease			Total
		and			Termination
		Termination			Obligations
					and Other
					Exit Costs
	Restructuring Charges:
	Balance Remaining as of December 31, 2012	$	9.4		$	2.3		$	11.7
	Charge Taken during First Quarter 2013	0.6			1.7			2.3
	Payments/Asset Impairment during First Quarter 2013 (1)	(3.7		)	(0.8		)	(4.5		)
	Balance Remaining as of March 31, 2013	$	6.3		$	3.2		$	9.5
	(1) We incurred an asset impairment of $0.5 million in the first quarter of 2013 related to the termination of a lease.

Notes_Payable_and_Indebtedness

Notes Payable and Indebtedness	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Notes Payable and Indebtedness	'
	Notes Payable and Indebtedness
	Our borrowings are summarized in the following table:
		March 31,		31-Dec-13
		2014
	Debt Maturing Within One Year:
	Other	$	0.1	$	0.1
	Total Debt Maturing Within One Year	$	0.1	$	0.1
	Debt Maturing After One Year:
	Long-Term Fixed-Rate Notes (Net of a $2.9 million and $3.0 million discount as of March 31, 2014 and December 31, 2013, respectively)	$	1,047.10	$	1,047.00
	Fair Value Adjustment Related to Hedged Debt	2.2		2.5
	Credit Facility	464.5		466.5
	Total Debt Maturing After One Year	$	1,513.80	$	1,516.00
	Fixed-Rate Notes
	In December 2012, we issued senior notes with a face value of $450 million that mature on December 1, 2017 (the "2017 notes”), bearing interest at a fixed annual rate of 3.25%, payable semi-annually. In addition, in December 2012, we issued senior notes with a face value of $300 million that mature on December 1, 2022 (the “2022 notes”), bearing interest at a fixed annual rate of 4.375%, payable semi-annually. The proceeds were used in December 2012 to repay borrowings outstanding under our revolving credit facility and retire our then outstanding $400 million senior notes bearing interest at a fixed annual rate of 6.00%, which had a maturity date of April 2013. The interest rates applicable to the 2017 notes and 2022 notes are subject to adjustment if our debt rating is decreased three levels below the Standard & Poor's and Fitch BBB+ credit ratings that we held on the date of issuance. After a rate adjustment, if our debt ratings are subsequently upgraded, the adjustment(s) would reverse. The maximum adjustment is 2.00% above the initial interest rates and the rates cannot adjust below the initial interest rates. As of March 31, 2014, no such adjustments to the interest rates were required. The 2017 notes and 2022 notes carrying amounts of $450.0 million and $297.5 million, net of less than $0.1 million and $2.5 million of remaining issuance discounts, respectively, are recorded as “Long-Term Debt” in the unaudited consolidated balance sheet at March 31, 2014.
	The 2017 notes and 2022 notes were issued at discounts of less than $0.1 million and $2.9 million, respectively. In addition, in connection with the issuance, we incurred underwriting and other fees of approximately $3.4 million and $2.5 million for the 2017 notes and 2022 notes, respectively. These costs are being amortized over the life of the applicable notes. The 2017 notes and 2022 notes contain certain covenants that limit our ability to create liens, enter into sale and leaseback transactions and consolidate, merge or sell assets to another entity. We were in compliance with these non-financial covenants at March 31, 2014 and 2013. The 2017 notes and 2022 notes do not contain any financial covenants.
	In November 2010, we issued senior notes with a face value of $300 million that mature on November 15, 2015 (the "2015 notes”), bearing interest at a fixed annual rate of 2.875%, payable semi-annually. The proceeds were used in December 2010 to repay our then outstanding $300 million senior notes, bearing interest at a fixed annual rate of 5.50%, which had a maturity date of March 15, 2011. The 2015 notes of $299.7 million, net of $0.3 million remaining discount, are recorded as “Long-Term Debt” in the unaudited consolidated balance sheet at March 31, 2014.
	The 2015 notes were issued at a discount of $1.1 million, and, in connection with the issuance, we incurred underwriting and other fees of approximately $2.5 million. These costs are being amortized over the life of the 2015 notes. The 2015 notes contain certain covenants that limit our ability to create liens, enter into sale and leaseback transactions and consolidate, merge or sell assets to another entity. We were in compliance with these non-financial covenants at March 31, 2014 and 2013. The 2015 notes do not contain any financial covenants.
	In November and December 2010, we entered into interest rate derivative transactions with aggregate notional amounts of $125 million. The objective of these hedges was to offset the change in fair value of the fixed rate 2015 notes attributable to changes in LIBOR. These transactions have been accounted for as fair value hedges. We have recognized the gain or loss on the derivative instruments, as well as the offsetting loss or gain on the hedged item, in “Other Income (Expense)—Net” in the consolidated statement of operations and comprehensive income.
	In March 2012, in connection with our objective to manage our exposure to interest rate changes and our policy to manage our fixed and floating-rate debt mix, the interest rate derivatives discussed in the previous paragraph were terminated. This resulted in a gain of $0.3 million and the receipt of $5.0 million in cash on March 12, 2012, the swap termination settlement date. The gain of $0.3 million was recorded in “Other Income (Expense) - Net” in the consolidated statement of operations and comprehensive income during the year ended December 31, 2012.
	Approximately $0.8 million of derivative gains offset by a $0.5 million loss on the fair value adjustment related to the hedged debt were recorded through the date of termination in the results for the three months ended March 31, 2012. The $4.9 million adjustment in the carrying amount of the hedged debt at the date of termination is being amortized as an offset to “Interest Expense” in our consolidated statement of operations and comprehensive income over the remaining term of the 2015 notes. Approximately $0.3 million of amortization was recorded during the three months ended March 31, 2014, resulting in a balance of $2.2 million in the unaudited consolidated balance sheet at March 31, 2014.
	Credit Facility
	At March 31, 2014 and December 31, 2013, we had an $800 million revolving credit facility, which expires in October 2016. Borrowings under the $800 million revolving credit facility are available at prevailing short-term interest rates. The facility requires the maintenance of interest coverage and total debt to Earnings Before Income Taxes, Depreciation and Amortization (“EBITDA”) ratios, which are defined in the credit agreement. We were in compliance with these revolving credit facility financial covenants at March 31, 2014 and December 31, 2013.
	At March 31, 2014 and December 31, 2013, we had $464.5 million and $466.5 million, respectively, of borrowings outstanding under the $800 million revolving credit facility with weighted average interest rates of 1.26% and 1.24%, respectively. We borrowed under this facility from time-to-time during the three months ended March 31, 2014 to supplement the timing of receipts in order to fund our working capital. We have also borrowed under this facility from time-to-time to fund a portion of our share repurchases. The $800 million revolving credit facility also supports our commercial paper program. Under this program, we may issue from time-to-time unsecured promissory notes in the commercial paper market in private placements exempt from registration under the Securities Act of 1933, as amended, for a cumulative face amount not to exceed $800 million outstanding at any one time and with maturities not exceeding 364 days from the date of issuance. Outstanding commercial paper effectively reduces the amount available for borrowing under the $800 million revolving credit facility. We did not borrow under our commercial paper program during the three months ended March 31, 2014 or 2013.
	Other
	At March 31, 2014 and December 31, 2013, certain of our international operations had uncommitted lines of credit of $2.7 million and $2.6 million, respectively. There were no borrowings outstanding under these lines of credit at March 31, 2014 and December 31, 2013, respectively. These arrangements have no material facility fees and no compensating balance requirements.
	We were contingently liable under open standby letters of credit and bank guarantees issued by our banks in favor of third parties totaling $4.7 million at March 31, 2014 and December 31, 2013, respectively.
	Interest paid for all outstanding debt totaled $1.3 million and $0.7 million during the three months ended March 31, 2014 and 2013, respectively.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	We assess if any of our share-based payment transactions are deemed participating securities prior to vesting and therefore need to be included in the earnings allocation when computing Earnings Per Share ("EPS") under the two-class method. The two-class method requires earnings to be allocated between common shareholders and holders of participating securities. All outstanding unvested share-based payment awards that contain non-forfeitable rights to dividends are considered to be a separate class of common stock and should be included in the calculation of basic and diluted EPS. Based on a review of our stock-based awards, we have determined that only our restricted stock awards are deemed participating securities. We did not have any weighted average restricted shares outstanding for either of the three months ended March 31, 2014 and 2013.
	We are required to include in our computation of diluted EPS any contingently issuable shares that have satisfied all the necessary conditions by the end of the reporting period or would have satisfied all necessary conditions if the end of the reporting period was the end of the performance period. Contingently issuable shares are shares that issuance is contingent upon the satisfaction of certain conditions other than just services. Beginning in 2013, we granted certain employees target awards of performance-based restricted stock units, in the form of leveraged restricted stock units or performance units. As the actual number of D&B common shares ultimately received by the employee can range from zero to 200% of the target award depending on the Company’s actual performance against the pre-established market conditions or performance conditions, these awards are considered contingently issuable shares.
		Three Months Ended March 31,
		2014		2013
	Net Income Attributable to D&B	$	85.3	$	52.9
	Less: Allocation to Participating Securities	—		—
	Net Income Attributable to D&B Common Shareholders – Basic and Diluted	$	85.3	$	52.9
	Weighted Average Number of Shares Outstanding – Basic	37.4		40.6
	Dilutive Effect of Our Stock Incentive Plans	0.3		0.3
	Weighted Average Number of Shares Outstanding – Diluted	37.7		40.9
	Basic Earnings Per Share of Common Stock Attributable to D&B Common Shareholders	$	2.28	$	1.3
	Diluted Earnings Per Share of Common Stock Attributable to D&B Common Shareholders	$	2.26	$	1.29
	Stock-based awards (including contingently issuable shares) to acquire 17,058 shares and 896,151 shares of common stock were outstanding at the three months ended March 31, 2014 and 2013, respectively, but were not included in the computation of diluted earnings per share because the assumed proceeds, as calculated under the treasury stock method, resulted in these awards being anti-dilutive. Our options generally expire ten years from the grant date and our stock awards vest generally within three to five years.
	Our share repurchases were as follows:
			For the Three Months Ended March 31,
	Program		2014			2013
			Shares	$ Amount		Shares	$ Amount
			(Dollar amounts in millions)
	Share Repurchase Programs (a)		813,323	$	85	1,423,537	$	115
	Repurchases to Mitigate the Dilutive Effect of the Shares Issued Under Our Stock Incentive Plans and Employee Stock Purchase Plan (“ESPP”) (b)		123,401	13		74,315	6
	Total Repurchases		936,724	$	98	1,497,852	$	121
	(a)	In August 2012, our Board of Directors approved a $500 million increase to our then-existing $500 million share repurchase program, for a total program authorization of $1 billion. The then-existing $500 million share repurchase program was approved by our Board of Directors in October 2011 and commenced in November 2011 upon completion of our previous $200 million share repurchase program. We anticipate that this program will be completed during 2014.
	(b)	In May 2010, our Board of Directors approved a four-year, five million share repurchase program to mitigate the dilutive effect of the shares issued under our stock incentive plans and ESPP. This program commenced in October 2010 and expires in October 2014. We anticipate that this program will be completed by October 2014, due to its expiration, regardless of whether all shares have been repurchased.

Other_Accrued_and_Current_Liab

Other Accrued and Current Liabilities	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Other Accrued and Current Liabilities	'
	Other Accrued and Current Liabilities
		March 31,		31-Dec-13
		2014
	Restructuring Accruals	$	9.4	$	10.4
	Bond Interest Payable (1)	12.5		3.4
	Professional Fees	34.3		34.6
	Operating Expenses	25.6		29.1
	Other Accrued Liabilities	34.2		38.6
		$	116	$	116.1
	-1	The increase in Bond Interest Payable from December 31, 2013 to March 31, 2014 was primarily attributed to the timing of the semi-annual interest payments.

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Contingencies	'
	Contingencies
	We are involved in tax and legal proceedings, claims and litigation arising in the ordinary course of business for which we believe that we have adequate reserves, and such reserves are not material to the consolidated financial statements. We record a liability when management believes that it is both probable that a liability has been incurred and we can reasonably estimate the amount of the loss. For such matters where management believes a liability is not probable but is reasonably possible, a liability is not recorded; instead, an estimate of loss or range of loss, if material individually or in the aggregate, is disclosed if reasonably estimable, or a statement will be made that an estimate of loss cannot be made. Once we have disclosed a matter that we believe is or could be material to us, we continue to report on such matter until there is finality of outcome or until we determine that disclosure is no longer warranted. Further, we believe our estimate of the aggregate range of reasonably possible losses, in excess of established reserves, for our legal proceedings was not material at March 31, 2014. In addition, from time-to-time, we may be involved in additional matters, which could become material and for which we may also establish reserve amounts, as discussed below.
	China Operations
	On March 18, 2012, we announced we had temporarily suspended our Shanghai Roadway D&B Marketing Services Co. Ltd. (“Roadway”) operations in China, pending an investigation into allegations that its data collection practices may have violated local Chinese consumer data privacy laws. Thereafter, the Company decided to permanently cease the operations of Roadway. In addition, we have been reviewing certain allegations that we may have violated the Foreign Corrupt Practices Act and certain other laws in our China operations. As previously reported, we have voluntarily contacted the Securities and Exchange Commission and the United States Department of Justice to advise both agencies of our investigation. Our investigation remains ongoing and is being conducted at the direction of the Audit Committee.
	On September 28, 2012, Roadway was charged in a Bill of Prosecution, along with five former employees, by the Shanghai District Prosecutor with illegally obtaining private information of Chinese citizens. On December 28, 2012, the Chinese court imposed a monetary fine on Roadway and fines and imprisonment on four former Roadway employees. A fifth former Roadway employee was separated from the case.
	During the three months ended March 31, 2014, we incurred $0.3 million of legal and other professional fees related to matters in China, as compared to $1.6 million of legal and other professional fees and $0.1 million in local shut-down costs for the three months ended March 31, 2013.
	As our investigation is ongoing, we cannot yet predict the ultimate outcome of the matter or its impact, if any, on our business, financial condition or results of operations. No amount in respect of any potential liability in this matter, including for penalties, fines or other sanctions, has been accrued in the consolidated financial statements. In accordance with ASC 450, "Contingencies," or "ASC 450", we do not have sufficient information upon which to determine that a loss in connection with this matter is probable, reasonably possible or estimable, and thus no reserve has been established nor has a range of loss been disclosed.
	Dun & Bradstreet Credibility Corporation v. Dun & Bradstreet, Inc., and The Dun & Bradstreet Corporation (N.Y. state court)
	On February 20, 2014, Dun & Bradstreet Credibility Corporation (“DBCC”) filed an action in the Supreme Court of the State of New York for the County of New York against the Company. DBCC is an unaffiliated entity with license rights to use the Company’s brand name and to sell certain of the Company’s products. The complaint alleges that the Company breached the Commercial Services Agreement (“CSA”), which was entered into by the Company and DBCC on July 30, 2010 in connection with DBCC’s acquisition of the Company’s North American Self Awareness Solution business. The complaint alleges that the Company breached several of the CSA’s terms, and that the Company is trying to terminate the CSA through improper means. The Complaint alleges causes of action for breach of contract; breach of the covenant of good faith and fair dealing, in the alternative; intentional interference with prospective economic advantage; and declaratory judgment. The Complaint seeks damages and declaratory and injunctive relief. The Company was served with the Complaint on February 24, 2014. On March 10, 2014, the court entered an order staying the lawsuit to permit the parties to attempt to resolve the matter in mediation.
	The Company is in the initial stages of investigating the allegations. In accordance with ASC 450, we therefore do not have sufficient information upon which to determine that a loss in connection with this matter is probable, reasonably possible or estimable, and thus no reserve has been established nor has a range of loss been disclosed.
	Dun & Bradstreet Credibility Corporation Sales Practices Litigations
	O&R Construction, LLC v. Dun & Bradstreet Credibility Corporation, et al., No. 2:12 CV 02184 (W.D. Wash.)
	On December 13, 2012, plaintiff O&R Construction LLC filed a putative class action in the United States District Court for the Western District of Washington against D&B and an unaffiliated entity. The complaint alleged, among other things, that defendants violated the antitrust laws, used deceptive marketing practices to sell the CreditBuilder credit monitoring products and allegedly misrepresented the nature, need and value of the products. The plaintiff purports to sue on behalf of a putative class of purchasers of CreditBuilder and seeks recovery of damages and equitable relief. On February 18, 2013, the Company filed a motion to dismiss the complaint. On April 5, 2013, plaintiff filed an amended complaint in lieu of responding to the motion. The amended complaint dropped the antitrust claims and retained the class action and deceptive practices allegations. The Company filed a new motion to dismiss the amended complaint on May 3, 2013. On August 23, 2013, the Court heard the motion and granted it. Specifically, the Court dismissed a contract claim with prejudice, and dismissed all the remaining claims without prejudice. On September 23, 2013, plaintiff filed a Second Amended Complaint (“SAC”). The SAC alleges claims for negligence, defamation and unfair business practices under Washington state law against the Company for alleged inaccuracies in small business credit reports. The SAC also alleges liability against the Company under a joint venture or agency theory for practices relating to CreditBuilder. The Company filed a motion to dismiss the SAC. On January 9, 2014, the Court heard argument on the Company’s motion and dismissed with prejudice the claims based on a joint venture or agency liability theory brought against the Company. The Court denied the motion with respect to the negligence, defamation and unfair practices claims. On January 23, 2014, the Company answered the SAC. On May 2, 2014, plaintiff filed a Notice Regarding Scope of Class Definition, noting its intention to revise its class definition to exclude small businesses from the states of Ohio and California from its motion for class certification. The parties exchanged initial disclosures and completed the initial case management process in March 2013. Discovery in the case is ongoing, and the Company is continuing to investigate the allegations. In accordance with ASC 450, we do not have sufficient information upon which to determine that a loss in connection with this matter is probable, reasonably possible or estimable, and thus no reserve has been established nor has a range of loss been disclosed.
	Die-Mension Corporation v. Dun & Bradstreet Credibility Corporation et al., No. 1:14-cv-392 (N.D. Oh.)
	On February 20, 2014, plaintiff Die-Mension Corporation (“Die-Mension”) filed a putative class action in the United States District Court for the Northern District of Ohio against the Company and DBCC, an unaffiliated entity, Die-Mension purporting to sue on behalf of a putative class of all purchasers of a CreditBuilder product in the United States or in such state(s) as the Court may certify. The complaint alleged that DBCC used deceptive marketing practices to sell the CreditBuilder credit monitoring products. As against the Company, the complaint alleged a violation of Ohio’s Deceptive Trade Practices Act, defamation, and negligence. The complaint alleged deceptive trade practices, negligent misrepresentation and concealment against DBCC. On March 4, 2014, in response to a direction from the court, Die-Mension withdrew its original complaint and filed an amended complaint. The amended complaint contains the same substantive allegations as the original complaint, but limits the purported class to small businesses in Ohio that purchased the CreditBuilder product. On March 13 2014, the Company agreed to waive service of the amended complaint. On May 5, 2014, the Company and DBCC filed a Joint Motion to Transfer the litigation to the Western District of Washington. The parties also filed a stipulated motion extending the Company and DBCC’s time to file a motion to dismiss or otherwise answer the amended complaint until 20 days after the Court decides the Joint Motion to Transfer. In accordance with ASC 450, we therefore do not have sufficient information upon which to determine that a loss in connection with this matter is probable, reasonably possible or estimable, and thus no reserve has been established nor has a range of loss been disclosed.
	Vinotemp International Corporation and CPrint®, Inc. v. Dun & Bradstreet Credibility Corporation, et al., No. 8:14-cv-00451 (C.D. Cal)
	On March 24 2014, plaintiffs Vinotemp International Corporation (“Vinotemp”) and CPrint®, Inc. (“CPrint”) filed a putative class action in the United States District Court for the Central District of California against the Company and DBCC, an unaffiliated entity. Vinotemp and CPrint purport to sue on behalf of all purchasers of DBCC’s CreditBuilder product in the state of California. The complaint alleges that DBCC used deceptive marketing practices to sell the CreditBuilder credit monitoring products, in violation of §17200 and §17500 of the California Business and Professions Code. The complaint also alleges negligent misrepresentation and concealment against DBCC. As against the Company, the complaint alleges that the Company entered false and inaccurate information on credit reports in violation of § 17200 of the California Business and Professions Code, and also alleges negligence and defamation claims. On March 31, 2014, the Company agreed to waive service of the complaint. The Company’s response is due May 27, 2014. The Company is in the initial stages of investigating the allegations. In accordance with ASC 450, we therefore do not have sufficient information upon which to determine that a loss in connection with this matter is probable, reasonably possible or estimable, and thus no reserve has been established nor has a range of loss been disclosed.
	Other Matters
	In addition, in the normal course of business, and including without limitation, our merger and acquisition activities and financing transactions, D&B indemnifies other parties, including customers, lessors and parties to other transactions with D&B, with respect to certain matters. D&B has agreed to hold the other parties harmless against losses arising from a breach of representations or covenants, or arising out of other claims made against certain parties. These agreements may limit the time within which an indemnification claim can be made and the amount of the claim. D&B has also entered into indemnity obligations with its officers and directors.
	Additionally, in certain circumstances, D&B issues guarantee letters on behalf of our wholly-owned subsidiaries for specific situations. It is not possible to determine the maximum potential amount of future payments under these indemnification agreements due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. Historically, payments made by D&B under these agreements have not had a material impact on our consolidated financial statements.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Income Taxes	'
	Income Taxes
	Our effective tax rate for the three months ended March 31, 2014 of (75.0)% was impacted by the release of reserves of $58.7 million, net of cash paid, for uncertain tax positions due to the effective settlement of audits for the 2007 - 2009 tax years. Our effective tax rate for the three months ended March 31, 2013 of 31.0% was impacted by the release of reserves for uncertain tax positions and a benefit for the reenactment of the U.S. research and development tax credit for 2012 and 2013 as part of the American Taxpayer Relief Act of 2012 signed into law in January 2013. For the three months ended March 31, 2014 there are no changes in our effective tax rate that either have had or that we expect may reasonably have a material impact on our operations or future performance.
	The total amount of gross unrecognized tax benefits as of March 31, 2014 was $44.5 million. The amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate is $41.6 million, net of related additional tax benefits. During the three months ended March 31, 2014, we decreased our unrecognized tax benefits by $61.2 million, net of increases. The decrease is primarily due to the effective settlement of audits for the 2007 - 2009 tax years. We anticipate that it is reasonably possible total unrecognized tax benefits will decrease by approximately $15 million within the next twelve months as a result of the expiration of applicable statutes of limitation.
	We or one of our subsidiaries file income tax returns in the U.S. federal, and various state, local and foreign jurisdictions. In the U.S. federal jurisdiction, we are no longer subject to examination by the IRS for years prior to 2010. In state and local jurisdictions, with a few exceptions, we are no longer subject to examinations by tax authorities for years prior to 2009. In foreign jurisdictions, with a few exceptions, we are no longer subject to examinations by tax authorities for years prior to 2008.
	We recognize accrued interest expense related to unrecognized tax benefits in income tax expense. The total amount of interest expense recognized for the three months ended March 31, 2014 was $0.3 million, net of tax benefits, as compared to $0.4 million, net of tax benefits, for the three months ended March 31, 2013. The total amount of accrued interest as of March 31, 2014 was $4.3 million, net of tax benefits, as compared to $8.6 million, net of tax benefits, as of March 31, 2013.

Pension_and_Postretirement_Ben

Pension and Postretirement Benefits	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Pension and Postretirement Benefits	'
	Pension and Postretirement Benefits
	The following table sets forth the components of the net periodic cost (income) associated with our pension plans and our postretirement benefit obligations:
		Pension Plans						Postretirement Benefit Obligations
		For the Three Months Ended March 31,						For the Three Months Ended March 31,
		2014			2013			2014			2013
	Components of Net Periodic Cost (Income):
	Service Cost	$	1.1		$	1.3		$	0.2		$	0.2
	Interest Cost	19.7			17.5			0.2			0.2
	Expected Return on Plan Assets	(25.2		)	(23.5		)	—			—
	Amortization of Prior Service Cost (Credit)	0.1			0.1			(0.4		)	(2.3		)
	Recognized Actuarial Loss (Gain)	8.9			10.9			(0.3		)	(0.4		)
	Net Periodic Cost (Income)	$	4.6		$	6.3		$	(0.3	)	$	(2.3	)
	We previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2013 that we expected to contribute $20 million to our U.S. Non-Qualified plans and non-U.S. pension plans and $4 million to our postretirement benefit plan for the year ended December 31, 2014. As of March 31, 2014, we have made contributions to our Non-Qualified U.S. and non-U.S. pension plans of $4.8 million and to our postretirement benefit plan of $0.6 million.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Segment Information	'
	Segment Information
	The operating segments reported below are our segments for which separate financial information is available and upon which operating results are evaluated by management on a timely basis to assess performance and to allocate resources. We manage and report our business through the following three segments:
	•	North America (which consists of our operations in the United States ("U.S.") and Canada);
	•	Asia Pacific (which primarily consists of our operations in Australia, Greater China, India and Asia Pacific Worldwide Network); and
	•	Europe and Other International Markets (which primarily consists of operations in the United Kingdom ("U.K."), the Netherlands, Belgium, Latin America and European Worldwide Network).
	Our customer solution sets are D&B Risk Management Solutions™ and D&B Sales & Marketing Solutions™. Inter-segment sales are immaterial, and no single customer accounted for 10% or more of our total revenue. For management reporting purposes, we evaluate business segment performance before restructuring charges and intercompany transactions, because these charges are not a component of our ongoing income or expenses and may have a disproportionate positive or negative impact on the results of our ongoing underlying business.
		For the Three Months Ended March 31,
		2014			2013
	Revenue:
	North America	$	279		$	283.2
	Asia Pacific	41.7			40.8
	Europe and Other International Markets	61.1			56.2
	Consolidated Core	381.8			380.2
	Divested and Other Businesses	0.1			0.8
	Consolidated Total	$	381.9		$	381
	Operating Income (Loss):
	North America	$	78		$	86
	Asia Pacific	6.2			2.4
	Europe and Other International Markets	16.7			14
	Total Segments	100.9			102.4
	Corporate and Other (1)	(18.6		)	(14.6		)
	Consolidated Total	82.3			87.8
	Non-Operating Income (Expense), Net (2)	(33.5		)	(10.9		)
	Income Before Provision for Income Taxes and Equity in Net Income of Affiliates	$	48.8		$	76.9
	-1	The following table summarizes “Corporate and Other:”
		For the Three Months Ended March 31,
		2014			2013
	Corporate Costs	$	(13.4	)	$	(10.7	)
	Restructuring Expense	(4.9		)	(2.3		)
	Legal and Other Professional Fees and Shut-Down Costs Related to Matters in China	(0.3		)	(1.6		)
	Total Corporate and Other	$	(18.6	)	$	(14.6	)
	-2	The following table summarizes “Non-Operating Income (Expense):”
		For the Three Months Ended March 31,
		2014			2013
	Interest Income	$	0.4		$	0.2
	Interest Expense	(10.6		)	(9.9		)
	Other Income (Expense) - Net (a)	(23.3		)	(1.2		)
	Non-Operating Income (Expense) - Net	$	(33.5	)	$	(10.9	)
	(a) The increase in Other Expense was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moody’s Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.
	Supplemental Geographic and Customer Solution Set Information:
		For the Three Months Ended March 31,
		2014			2013
	Customer Solution Set Revenue:
	North America:
	Risk Management Solutions	$	163.3		$	166
	Sales & Marketing Solutions	115.7			117.2
	North America Core Revenue	279			283.2
	Divested and Other Businesses	—			—
	Total North America Revenue	279			283.2
	Asia Pacific:
	Risk Management Solutions	36.7			35.6
	Sales & Marketing Solutions	5			5.2
	Asia Pacific Core Revenue	41.7			40.8
	Divested and Other Businesses (3)	—			0.6
	Total Asia Pacific Revenue	41.7			41.4
	Europe and Other International Markets:
	Risk Management Solutions	49.7			46.1
	Sales & Marketing Solutions	11.4			10.1
	Europe and Other International Markets Core Revenue	61.1			56.2
	Divested and Other Businesses	0.1			0.2
	Total Europe and Other International Markets Revenue	61.2			56.4
	Consolidated Total:
	Risk Management Solutions	249.7			247.7
Sales & Marketing Solutions	132.1			132.5
Core Revenue	381.8			380.2
Divested and Other Businesses (3)	0.1			0.8
Consolidated Total Revenue	$	381.9		$	381
-3	During the fourth quarter of 2013 and in the first quarter of 2014, we ceased the operations of: (a) our India Event Planning and Rural Marketing Businesses in our Asia Pacific segment. These businesses contributed 2% to our Asia Pacific total revenue for the three months ended March 31, 2013; and (b) our Ireland Small Corporate Registry Business in our Europe and Other International Markets segment. This business contributed less than 1% to our Europe and Other International Markets total revenue for each of the three months ended March 31, 2014 and 2013. These businesses have been classified as “Divested and Other Businesses.”
The following table represents Divested and Other Businesses revenue by solution set:
	For the Three Months Ended March 31,
	2014			2013
Divested and Other Businesses:
Risk Management Solutions	$	0.1		$	0.2
Sales & Marketing Solutions	—			0.6
Total Divested and Other Businesses Revenue	$	0.1		$	0.8
	At March 31, 2014			At December 31, 2013
Assets:
North America (4)	$	781.5		$	843.2
Asia Pacific (5)	367.6			371.9
Europe and Other International Markets (6)	455.2			445.4
Total Segments	1,604.30			1,660.50
Corporate and Other (7)	202.9			229.8
Consolidated Total	$	1,807.20		$	1,890.30
Goodwill:
North America	$	262.7		$	265.1
Asia Pacific	207.2			210.2
Europe and Other International Markets	115.7			113.8
Consolidated Total	$	585.6		$	589.1
-4	The decrease in assets in the North America segment to $781.5 million at March 31, 2014 from $843.2 million at December 31, 2013 was primarily due to a decrease in accounts receivable compared to the fourth quarter of 2013 resulting from the cyclical sales pattern of our North America business.
-5	The decrease in assets in the Asia Pacific segment to $367.6 million at March 31, 2014 from $371.9 million at December 31, 2013 was primarily due to the negative impact of foreign currency translation.
-6	The increase in assets in the Europe and Other International Markets segment to $455.2 million at March 31, 2014 from $445.4 million at December 31, 2013 was primarily due to an increase in cash as a result of higher collections.
-7	The decrease in assets in Corporate and Other to $202.9 million at March 31, 2014 from $229.8 million at December 31, 2013 was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moody’s Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.

Financial_Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Financial Instruments	'
	Financial Instruments
	We employ established policies and procedures to manage our exposure to changes in interest rates and foreign currencies. We use foreign exchange forward contracts to hedge short-term foreign currency denominated loans, investments and certain third-party and intercompany transactions. We may also use foreign exchange forward contracts to hedge our net investments in our foreign subsidiaries and foreign exchange option contracts to reduce the volatility that fluctuating foreign exchange rates may have on our international earnings streams. In addition, we may use interest rate derivatives to hedge a portion of the interest rate exposure on our outstanding debt or in anticipation of a future debt issuance, as discussed under “Interest Rate Risk Management” below.
	We do not use derivative financial instruments for trading or speculative purposes. If a hedging instrument ceases to qualify as a hedge in accordance with hedge accounting guidelines, any subsequent gains and losses are recognized currently in income. Collateral is generally not required for these types of instruments.
	By their nature, all such instruments involve risk, including the credit risk of non-performance by counterparties. However, at March 31, 2014 and December 31, 2013, there was no significant risk of loss in the event of non-performance of the counterparties to these financial instruments. We control our exposure to credit risk through monitoring procedures.
	Our trade receivables do not represent a significant concentration of credit risk at March 31, 2014 and December 31, 2013, because we sell to a large number of customers in different geographical locations and industries.
	Interest Rate Risk Management
	Our objective in managing our exposure to interest rates is to limit the impact of interest rate changes on our earnings, cash flows and financial position, and to lower our overall borrowing costs. To achieve these objectives, we maintain a policy that floating-rate debt be managed within a minimum and maximum range of our total debt exposure. To manage our exposure and limit volatility, we may use fixed-rate debt, floating-rate debt and/or interest rate swaps. We recognize all derivative instruments as either assets or liabilities at fair value in the statement of financial position. As of March 31, 2014, we did not have any interest rate derivatives outstanding.
	Fair Value Hedges
	For interest rate derivative instruments that are designated and qualify as a fair value hedge, we assess quarterly whether the interest rate swaps are highly effective in offsetting changes in the fair value of the hedged debt. Changes in fair values of interest rate swap agreements that are designated fair-value hedges are recognized in earnings as an adjustment of “Other Income (Expense) – Net” in the unaudited consolidated statements of operations and comprehensive income. The effectiveness of the hedge is monitored on an ongoing basis for hedge accounting purposes, and if the hedge is considered ineffective, we discontinue hedge accounting prospectively.
	In November 2010, we issued senior notes with a face value of $300 million that mature on November 15, 2015 (the "2015 notes”). In November and December 2010, we entered into interest rate derivative transactions with aggregate notional amounts of $125 million. The objective of these hedges was to offset the change in fair value of the fixed rate 2015 notes attributable to changes in LIBOR. These transactions have been accounted for as fair value hedges. We have recognized the gain or loss on the derivative instruments, as well as the offsetting loss or gain on the hedged item, in “Other Income (Expense) – Net” in the unaudited consolidated statements of operations and comprehensive income.
	In March 2012, in connection with our objective to manage our exposure to interest rate changes and our policy to manage our fixed and floating-rate debt mix, the interest rate derivatives discussed in the previous paragraph were terminated. This resulted in a gain of $0.3 million and the receipt of $5.0 million in cash on March 12, 2012, the swap termination settlement date. The gain of $0.3 million was recorded in “Other Income (Expense)—Net” in the consolidated statement of operations and comprehensive income during the year ended December 31, 2012.
	Approximately $0.8 million of derivative gains offset by a $0.5 million loss on the fair value adjustment related to the hedged debt were recorded through the date of termination in the results for the three months ended March 31, 2012. The $4.9 million adjustment in the carrying amount of the hedged debt at the date of termination is being amortized as an offset to “Interest Expense” in our consolidated statement of operations and comprehensive income over the remaining term of the 2015 notes. Approximately $0.3 million of amortization was recorded during the three months ended March 31, 2014, resulting in a balance of $2.2 million in the unaudited consolidated balance sheet at March 31, 2014.
	Cash Flow Hedges
	For interest rate derivative instruments that are designated and qualify as a cash flow hedge, the effective portion of the periodic hedge remeasurement gains or losses on the derivative are reported as a component of other comprehensive income ("OCI") and reclassified to earnings in the same period or periods during which the hedged transaction affects earnings. Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in current earnings.
	Foreign Exchange Risk Management
	Our objective in managing exposure to foreign currency fluctuations is to reduce the volatility caused by foreign exchange rate changes on the earnings, cash flows and financial position of our international operations. We follow a policy of hedging balance sheet positions denominated in currencies other than the functional currency applicable to each of our various subsidiaries. In addition, we are subject to foreign exchange risk associated with our international earnings and net investments in our foreign subsidiaries. We use short-term, foreign exchange forward and option contracts to execute our hedging strategies. Typically, these contracts have maturities of 12 months or less. These contracts are denominated primarily in the British pound sterling, the Euro and Canadian dollar. The gains and losses on the forward contracts associated with the balance sheet positions are recorded in “Other Income (Expense) – Net” in the unaudited consolidated statements of operations and comprehensive income and are essentially offset by the losses and gains on the underlying foreign currency transactions.
	As in prior years, we have hedged substantially all balance sheet positions denominated in a currency other than the functional currency applicable to each of our various subsidiaries with short-term, foreign exchange forward contracts. In addition, we may use foreign exchange option contracts to hedge certain foreign earnings streams and foreign exchange forward contracts to hedge certain net investment positions. The underlying transactions and the corresponding foreign exchange forward and option contracts are marked-to-market at the end of each quarter and the fair value impacts are reflected within the unaudited consolidated financial statements.
	As of March 31, 2014 and 2013, the notional amounts of our foreign exchange contracts were $295.9 million and $280.5 million, respectively.
	Fair Values of Derivative Instruments in the Consolidated Balance Sheet
		Asset Derivatives										Liability Derivatives
		31-Mar-14						31-Dec-13				31-Mar-14				31-Dec-13
		Balance Sheet		Fair Value				Balance Sheet		Fair Value		Balance Sheet		Fair Value		Balance Sheet	Fair Value
		Location						Location				Location				Location
	Derivatives not designated as hedging instruments
	Foreign exchange forward contracts	Other Current		$	0.2			Other Current		$	0.4	Other Accrued &		$	0.3	Other Accrued &	$	0.4
		Assets						Assets				Current Liabilities				Current Liabilities
	Total derivatives not designated as hedging instruments			$	0.2					$	0.4			$	0.3		$	0.4
	Total Derivatives			$	0.2					$	0.4			$	0.3		$	0.4
	Our foreign exchange forward and option contracts are not designated as hedging instruments under authoritative guidance.
	The Effect of Derivative Instruments on the Consolidated Statement of Operations and Comprehensive Income
	Derivatives Not Designated as Hedging	Location of Gain or (Loss) Recognized in		Amount of Gain or (Loss) Recognized in Income on Derivatives
	Instruments	Income on Derivatives
				For the Three Months Ended March 31,
				2014				2013
	Foreign exchange forward contracts	Non-Operating Income (Expenses) – Net		$	(4.9	)		$	(5.3	)
	Fair Value of Financial Instruments
	Our financial assets and liabilities that are reflected in the consolidated financial statements include derivative financial instruments, cash and cash equivalents, accounts receivable, other receivables, accounts payable, short-term borrowings and long-term borrowings. We use short-term foreign exchange forward contracts to hedge short-term foreign currency-denominated intercompany loans and certain third-party and intercompany transactions and we use foreign exchange option contracts to reduce the volatility that fluctuating foreign exchange rates may have on our international earnings streams. Fair value for derivative financial instruments is determined utilizing a market approach.
	We have a process for determining fair values. Fair value is based upon quoted market prices, where available. If listed prices or quotes are not available, we use quotes from independent pricing vendors based on recent trading activity and other relevant information including market interest rate curves and referenced credit spreads.
	In addition to utilizing external valuations, we conduct our own internal assessment of the reasonableness of the external valuations by utilizing a variety of valuation techniques including Black-Scholes option pricing and discounted cash flow models that are consistently applied. Inputs to these models include observable market data, such as yield curves, and foreign exchange rates where applicable. Our assessments are designed to identify prices that do not accurately reflect the current market environment, those that have changed significantly from prior valuations and other anomalies that may indicate that a price may not be accurate. We also follow established routines for reviewing and reconfirming valuations with the pricing provider, if deemed appropriate. In addition, the pricing provider has an established challenge process in place for all valuations, which facilitates identification and resolution of potentially erroneous prices. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments include amounts to reflect counterparty credit quality and our own creditworthiness and constraints on liquidity. For inactive markets that do not have observable pricing or sufficient trading volumes, or for positions that are subject to transfer restrictions, valuations are adjusted to reflect illiquidity and/or non-transferability. Such adjustments are generally based on available market evidence. In the absence of such evidence, management’s best estimate will be used.
	The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while we believe our valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.
	The following table presents information about our assets and liabilities measured at fair value on a recurring basis as of March 31, 2014 and December 31, 2013, and indicates the fair value hierarchy of the valuation techniques utilized by us to determine such fair value. Level inputs, as defined by authoritative guidance, are as follows:
	Level Input:	Input Definition:
	Level I	Observable inputs utilizing quoted prices (unadjusted) for identical assets or liabilities in active markets at the measurement date.
	Level II	Inputs other than quoted prices included in Level I that are either directly or indirectly observable for the asset or liability through corroboration with market data at the measurement date.
	Level III	Unobservable inputs for the asset or liability in which little or no market data exists therefore requiring management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date.
	In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy within which the fair value measurement in its entirety falls has been determined based on the lowest level input that is significant to the fair value measurement in its entirety. Our assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.
	The following table summarizes fair value measurements by level at March 31, 2014 for assets and liabilities measured at fair value on a recurring basis:
		Quoted Prices in				Significant Other				Significant		Balance at March 31, 2014
		Active Markets				Observable				Unobservable
		for Identical				Inputs (Level II)				Inputs
		Assets (Level I)								(Level III)
	Assets:
	Cash Equivalents (1)	$	98.7			$	—			$	—	$	98.7
	Other Current Assets:
	Foreign Exchange Forwards (2)	$	—			$	0.2			$	—	$	0.2
	Liabilities:
	Other Accrued and Current Liabilities:
	Foreign Exchange Forwards (2)	$	—			$	0.3			$	—	$	0.3
	-1	Cash equivalents represent fair value as it consists of highly liquid investments with an original maturity of three months or less.
	-2	Primarily represents foreign currency forward and option contracts. Fair value is determined utilizing a market approach and considers a factor for nonperformance in the valuation.
	The following table summarizes fair value measurements by level at December 31, 2013 for assets and liabilities measured at fair value on a recurring basis:
		Quoted Prices in				Significant Other				Significant		Balance at December 31, 2013
		Active Markets				Observable				Unobservable
for Identical			Inputs (Level II)			Inputs
Assets (Level I)						(Level III)
Assets:
Cash Equivalents (1)	$	95.9			$	—			$	—	$	95.9
Other Current Assets:
Foreign Exchange Forwards (2)	$	—			$	0.4			$	—	$	0.4
Liabilities:
Other Accrued and Current Liabilities:
Foreign Exchange Forwards (2)	$	—			$	0.4			$	—	$	0.4
-1	Cash equivalents represent fair value as it consists of highly liquid investments with an original maturity of three months or less.
-2	Primarily represents foreign currency forward and option contracts. Fair value is determined utilizing a market approach and considers a factor for nonperformance in the valuation.
At March 31, 2014 and December 31, 2013, the fair value of cash and cash equivalents, accounts receivable, other receivables and accounts payable approximated carrying value due to the short-term nature of these instruments. The estimated fair values of other financial instruments subject to fair value disclosures, determined based on valuation models using discounted cash flow methodologies with market data inputs from globally recognized data providers and third-party quotes from major financial institutions (categorized as Level II in the fair value hierarchy), are as follows:
	Balance at
	31-Mar-14								31-Dec-13
	Carrying				Fair Value				Carrying		Fair Value
	Amount (Asset)				(Asset) Liability				Amount (Asset)		(Asset) Liability
	Liability								Liability
Long-term Debt	$	1,047.10			$	1,081.40			$	1,047.00	$	1,054.80
Credit Facilities	$	464.5			$	464.6			$	466.5	$	466.1
Items Measured at Fair Value on a Nonrecurring Basis
In addition to assets and liabilities that are recorded at fair value on a recurring basis, we are required to record assets and liabilities at fair value on a nonrecurring basis as required by GAAP. Generally, assets are recorded at fair value on a nonrecurring basis as a result of impairment charges.
During the three months ended March 31, 2014 and 2013, we did not measure any assets or liabilities at fair value on a nonrecurring basis.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2014
Other Comprehensive Income (Loss), Net of Tax [Abstract]	'
Comprehensive Income (Loss) Note [Text Block]	'
	Accumulated Other Comprehensive Income (Loss)
	The following table summarizes the changes in the accumulated balances for each component of accumulated other comprehensive income ("AOCI") as of March 31, 2014 and 2013:
		Foreign Currency Translation Adjustments				Defined Benefit Pension Plans				Derivative Financial Instruments		Total
	Balance, December 31, 2012	$	(151.2	)		$	(701.0	)		$	0.1	$	(852.1	)
	Other Comprehensive Income (Loss) Before Reclassifications	(12.4		)		—				—		(12.4		)
	Amounts Reclassified From Accumulated Other Comprehensive Income, net of tax	—				5.5				—		5.5
	Balance, March 31, 2013	$	(163.6	)		$	(695.5	)		$	0.1	$	(859.0	)
	Balance, December 31, 2013	$	(186.7	)		$	(552.2	)		$	0.1	$	(738.8	)
	Other Comprehensive Income (Loss) Before Reclassifications	(3.4		)		—				—		(3.4		)
	Amounts Reclassified From Accumulated Other Comprehensive Income, net of tax	—				5.4				—		5.4
	Balance, March 31, 2014	$	(190.1	)		$	(546.8	)		$	0.1	$	(736.8	)
	The following table summarizes the reclassifications out of AOCI as of March 31, 2014 and 2013:
	Details About Accumulated Other Comprehensive Income Components	Affected Line Item in the Statement Where Net Income is Presented		Amount Reclassified from Accumulated Other Comprehensive Income
				Three Months Ended March 31,
				2014				2013
	Foreign Currency Translation Adjustments:
	Sale of Business	Other Income (Expense) – Net		$	—			$	—
	Defined Benefit Pension Plans:
	Amortization of Prior Service Costs	Selling and Administrative Expenses		$	(0.2	)		$	(1.6	)
		Operating Expenses		(0.1		)		(0.6		)
	Amortization of Actuarial Gain/Loss	Selling and Administrative Expenses		6.3				7.8
		Operating Expenses		2.3				2.7
	Total Before Tax			8.3				8.3
	Tax (Expense) or Benefit			(2.9		)		(2.8		)
	Total After Tax			$	5.4			$	5.5
	Derivative Financial Instruments:
	Amortization of Cash Flow Hedges	Interest Expense		$	—			$	—
	Total Before Tax			—				—
	Tax (Expense) or Benefit			—				—
	Total After Tax			$	—			$	—
	Total Reclassifications for the Period, Net of Tax			$	5.4			$	5.5

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Subsequent Events	'
	Subsequent Events
	Dividend Declaration
	In May 2014, the Board of Directors approved the declaration of a dividend of $0.44 per share of common stock for the second quarter of 2014. This cash dividend will be payable on June 13, 2014 to shareholders of record at the close of business on May 29, 2014.
	Share Repurchases
	From April 1, 2014 through May 6, 2014, we have repurchased 349,200 shares of common stock for approximately $36 million, which were outstanding at March 31, 2014. The share repurchases were comprised of 310,278 shares of common stock for approximately $32 million under our $1 billion share repurchase program and 38,922 shares of common stock for approximately $4 million under our four-year, five million share repurchase program to mitigate the dilutive effect of the shares issued under our stock incentive plans and ESPP. See Note 5 to the unaudited consolidated financial statements included in this Quarterly Report on Form 10-Q for further discussion on our share repurchase programs.

Restructuring_Charge_Tables

Restructuring Charge (Tables)	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Restructuring Reserves and Utilization Related to Financial Flexibility Initiatives	'
	The following tables set forth, in accordance with ASC 712-10 and/or ASC 420-10, the restructuring reserves and utilization:
		Severance			Contract Termination, Lease			Total
		and			Termination
		Termination			Obligations
					and Other
					Exit Costs
	Restructuring Charges:
	Balance Remaining as of December 31, 2013	$	5.8		$	4.6		$	10.4
	Charge Taken during First Quarter 2014	4.7			0.2			4.9
	Payments during First Quarter 2014	(2.0		)	(3.9		)	(5.9		)
	Balance Remaining as of March 31, 2014	$	8.5		$	0.9		$	9.4
		Severance			Contract Termination, Lease			Total
		and			Termination
		Termination			Obligations
					and Other
					Exit Costs
	Restructuring Charges:
	Balance Remaining as of December 31, 2012	$	9.4		$	2.3		$	11.7
	Charge Taken during First Quarter 2013	0.6			1.7			2.3
	Payments/Asset Impairment during First Quarter 2013 (1)	(3.7		)	(0.8		)	(4.5		)
	Balance Remaining as of March 31, 2013	$	6.3		$	3.2		$	9.5
	(1) We incurred an asset impairment of $0.5 million in the first quarter of 2013 related to the termination of a lease.

Notes_Payable_and_Indebtedness1

Notes Payable and Indebtedness (Tables)	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Borrowings	'
	Our borrowings are summarized in the following table:
		March 31,		31-Dec-13
		2014
	Debt Maturing Within One Year:
	Other	$	0.1	$	0.1
	Total Debt Maturing Within One Year	$	0.1	$	0.1
	Debt Maturing After One Year:
	Long-Term Fixed-Rate Notes (Net of a $2.9 million and $3.0 million discount as of March 31, 2014 and December 31, 2013, respectively)	$	1,047.10	$	1,047.00
	Fair Value Adjustment Related to Hedged Debt	2.2		2.5
	Credit Facility	464.5		466.5
	Total Debt Maturing After One Year	$	1,513.80	$	1,516.00

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Earnings Per Share	'
		Three Months Ended March 31,
		2014		2013
	Net Income Attributable to D&B	$	85.3	$	52.9
	Less: Allocation to Participating Securities	—		—
	Net Income Attributable to D&B Common Shareholders – Basic and Diluted	$	85.3	$	52.9
	Weighted Average Number of Shares Outstanding – Basic	37.4		40.6
	Dilutive Effect of Our Stock Incentive Plans	0.3		0.3
	Weighted Average Number of Shares Outstanding – Diluted	37.7		40.9
	Basic Earnings Per Share of Common Stock Attributable to D&B Common Shareholders	$	2.28	$	1.3
	Diluted Earnings Per Share of Common Stock Attributable to D&B Common Shareholders	$	2.26	$	1.29
Share Repurchases	'
	Our share repurchases were as follows:
			For the Three Months Ended March 31,
	Program		2014			2013
			Shares	$ Amount		Shares	$ Amount
			(Dollar amounts in millions)
	Share Repurchase Programs (a)		813,323	$	85	1,423,537	$	115
	Repurchases to Mitigate the Dilutive Effect of the Shares Issued Under Our Stock Incentive Plans and Employee Stock Purchase Plan (“ESPP”) (b)		123,401	13		74,315	6
	Total Repurchases		936,724	$	98	1,497,852	$	121
	(a)	In August 2012, our Board of Directors approved a $500 million increase to our then-existing $500 million share repurchase program, for a total program authorization of $1 billion. The then-existing $500 million share repurchase program was approved by our Board of Directors in October 2011 and commenced in November 2011 upon completion of our previous $200 million share repurchase program. We anticipate that this program will be completed during 2014.
	(b)	In May 2010, our Board of Directors approved a four-year, five million share repurchase program to mitigate the dilutive effect of the shares issued under our stock incentive plans and ESPP. This program commenced in October 2010 and expires in October 2014. We anticipate that this program will be completed by October 2014, due to its expiration, regardless of whether all shares have been repurchased.

Other_Accrued_and_Current_Liab1

Other Accrued and Current Liabilities (Tables)	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Schedule of Accrued Liabilities [Table Text Block]	'
	Other Accrued and Current Liabilities
		March 31,		31-Dec-13
		2014
	Restructuring Accruals	$	9.4	$	10.4
	Bond Interest Payable (1)	12.5		3.4
	Professional Fees	34.3		34.6
	Operating Expenses	25.6		29.1
	Other Accrued Liabilities	34.2		38.6
		$	116	$	116.1
	-1	The increase in Bond Interest Payable from December 31, 2013 to March 31, 2014 was primarily attributed to the timing of the semi-annual interest payments.

Pension_and_Postretirement_Ben1

Pension and Postretirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Components of Net Periodic (Income) Cost Associated with Pension Plans and Postretirement Benefit Obligations	'
	The following table sets forth the components of the net periodic cost (income) associated with our pension plans and our postretirement benefit obligations:
		Pension Plans						Postretirement Benefit Obligations
		For the Three Months Ended March 31,						For the Three Months Ended March 31,
		2014			2013			2014			2013
	Components of Net Periodic Cost (Income):
	Service Cost	$	1.1		$	1.3		$	0.2		$	0.2
	Interest Cost	19.7			17.5			0.2			0.2
	Expected Return on Plan Assets	(25.2		)	(23.5		)	—			—
	Amortization of Prior Service Cost (Credit)	0.1			0.1			(0.4		)	(2.3		)
	Recognized Actuarial Loss (Gain)	8.9			10.9			(0.3		)	(0.4		)
	Net Periodic Cost (Income)	$	4.6		$	6.3		$	(0.3	)	$	(2.3	)

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Segment Information, Revenue and Operating Income (Loss)	'
		For the Three Months Ended March 31,
		2014			2013
	Revenue:
	North America	$	279		$	283.2
	Asia Pacific	41.7			40.8
	Europe and Other International Markets	61.1			56.2
	Consolidated Core	381.8			380.2
	Divested and Other Businesses	0.1			0.8
	Consolidated Total	$	381.9		$	381
	Operating Income (Loss):
	North America	$	78		$	86
	Asia Pacific	6.2			2.4
	Europe and Other International Markets	16.7			14
	Total Segments	100.9			102.4
	Corporate and Other (1)	(18.6		)	(14.6		)
	Consolidated Total	82.3			87.8
	Non-Operating Income (Expense), Net (2)	(33.5		)	(10.9		)
	Income Before Provision for Income Taxes and Equity in Net Income of Affiliates	$	48.8		$	76.9
	-1	The following table summarizes “Corporate and Other:”
		For the Three Months Ended March 31,
		2014			2013
	Corporate Costs	$	(13.4	)	$	(10.7	)
	Restructuring Expense	(4.9		)	(2.3		)
	Legal and Other Professional Fees and Shut-Down Costs Related to Matters in China	(0.3		)	(1.6		)
	Total Corporate and Other	$	(18.6	)	$	(14.6	)
	-2	The following table summarizes “Non-Operating Income (Expense):”
		For the Three Months Ended March 31,
		2014			2013
	Interest Income	$	0.4		$	0.2
	Interest Expense	(10.6		)	(9.9		)
	Other Income (Expense) - Net (a)	(23.3		)	(1.2		)
	Non-Operating Income (Expense) - Net	$	(33.5	)	$	(10.9	)
Supplemental Geographic and Customer Solution Set Information	'
		For the Three Months Ended March 31,
		2014			2013
	Customer Solution Set Revenue:
	North America:
	Risk Management Solutions	$	163.3		$	166
	Sales & Marketing Solutions	115.7			117.2
	North America Core Revenue	279			283.2
	Divested and Other Businesses	—			—
	Total North America Revenue	279			283.2
	Asia Pacific:
	Risk Management Solutions	36.7			35.6
	Sales & Marketing Solutions	5			5.2
	Asia Pacific Core Revenue	41.7			40.8
	Divested and Other Businesses (3)	—			0.6
	Total Asia Pacific Revenue	41.7			41.4
	Europe and Other International Markets:
	Risk Management Solutions	49.7			46.1
	Sales & Marketing Solutions	11.4			10.1
	Europe and Other International Markets Core Revenue	61.1			56.2
	Divested and Other Businesses	0.1			0.2
	Total Europe and Other International Markets Revenue	61.2			56.4
	Consolidated Total:
	Risk Management Solutions	249.7			247.7
	Sales & Marketing Solutions	132.1			132.5
	Core Revenue	381.8			380.2
	Divested and Other Businesses (3)	0.1			0.8
	Consolidated Total Revenue	$	381.9		$	381
	-3	During the fourth quarter of 2013 and in the first quarter of 2014, we ceased the operations of: (a) our India Event Planning and Rural Marketing Businesses in our Asia Pacific segment. These businesses contributed 2% to our Asia Pacific total revenue for the three months ended March 31, 2013; and (b) our Ireland Small Corporate Registry Business in our Europe and Other International Markets segment. This business contributed less than 1% to our Europe and Other International Markets total revenue for each of the three months ended March 31, 2014 and 2013. These businesses have been classified as “Divested and Other Businesses.”
	The following table represents Divested and Other Businesses revenue by solution set:
		For the Three Months Ended March 31,
		2014			2013
	Divested and Other Businesses:
	Risk Management Solutions	$	0.1		$	0.2
	Sales & Marketing Solutions	—			0.6
	Total Divested and Other Businesses Revenue	$	0.1		$	0.8
		At March 31, 2014			At December 31, 2013
	Assets:
	North America (4)	$	781.5		$	843.2
	Asia Pacific (5)	367.6			371.9
	Europe and Other International Markets (6)	455.2			445.4
	Total Segments	1,604.30			1,660.50
	Corporate and Other (7)	202.9			229.8
	Consolidated Total	$	1,807.20		$	1,890.30
	Goodwill:
	North America	$	262.7		$	265.1
	Asia Pacific	207.2			210.2
	Europe and Other International Markets	115.7			113.8
	Consolidated Total	$	585.6		$	589.1
	-4	The decrease in assets in the North America segment to $781.5 million at March 31, 2014 from $843.2 million at December 31, 2013 was primarily due to a decrease in accounts receivable compared to the fourth quarter of 2013 resulting from the cyclical sales pattern of our North America business.
	-5	The decrease in assets in the Asia Pacific segment to $367.6 million at March 31, 2014 from $371.9 million at December 31, 2013 was primarily due to the negative impact of foreign currency translation.
	-6	The increase in assets in the Europe and Other International Markets segment to $455.2 million at March 31, 2014 from $445.4 million at December 31, 2013 was primarily due to an increase in cash as a result of higher collections.
	-7	The decrease in assets in Corporate and Other to $202.9 million at March 31, 2014 from $229.8 million at December 31, 2013 was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moody’s Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.

Financial_Instruments_Tables

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Text Block [Abstract]	'
Fair Values of Derivative Instruments in Consolidated Balance Sheet	'
	Fair Values of Derivative Instruments in the Consolidated Balance Sheet
		Asset Derivatives										Liability Derivatives
		31-Mar-14						31-Dec-13				31-Mar-14				31-Dec-13
		Balance Sheet		Fair Value				Balance Sheet		Fair Value		Balance Sheet		Fair Value		Balance Sheet	Fair Value
		Location						Location				Location				Location
	Derivatives not designated as hedging instruments
	Foreign exchange forward contracts	Other Current		$	0.2			Other Current		$	0.4	Other Accrued &		$	0.3	Other Accrued &	$	0.4
		Assets						Assets				Current Liabilities				Current Liabilities
	Total derivatives not designated as hedging instruments			$	0.2					$	0.4			$	0.3		$	0.4
	Total Derivatives			$	0.2					$	0.4			$	0.3		$	0.4
Effect of Derivative Instruments on Consolidated Statement of Operations	'
	The Effect of Derivative Instruments on the Consolidated Statement of Operations and Comprehensive Income
	Derivatives Not Designated as Hedging	Location of Gain or (Loss) Recognized in		Amount of Gain or (Loss) Recognized in Income on Derivatives
	Instruments	Income on Derivatives
				For the Three Months Ended March 31,
				2014				2013
	Foreign exchange forward contracts	Non-Operating Income (Expenses) – Net		$	(4.9	)		$	(5.3	)
Assets and Liabilities Measured at Fair Value on Recurring Basis	'
	The following table summarizes fair value measurements by level at March 31, 2014 for assets and liabilities measured at fair value on a recurring basis:
		Quoted Prices in				Significant Other				Significant		Balance at March 31, 2014
		Active Markets				Observable				Unobservable
		for Identical				Inputs (Level II)				Inputs
		Assets (Level I)								(Level III)
	Assets:
	Cash Equivalents (1)	$	98.7			$	—			$	—	$	98.7
	Other Current Assets:
	Foreign Exchange Forwards (2)	$	—			$	0.2			$	—	$	0.2
	Liabilities:
	Other Accrued and Current Liabilities:
	Foreign Exchange Forwards (2)	$	—			$	0.3			$	—	$	0.3
	-1	Cash equivalents represent fair value as it consists of highly liquid investments with an original maturity of three months or less.
	-2	Primarily represents foreign currency forward and option contracts. Fair value is determined utilizing a market approach and considers a factor for nonperformance in the valuation.
	The following table summarizes fair value measurements by level at December 31, 2013 for assets and liabilities measured at fair value on a recurring basis:
		Quoted Prices in				Significant Other				Significant		Balance at December 31, 2013
		Active Markets				Observable				Unobservable
		for Identical				Inputs (Level II)				Inputs
		Assets (Level I)								(Level III)
	Assets:
	Cash Equivalents (1)	$	95.9			$	—			$	—	$	95.9
	Other Current Assets:
	Foreign Exchange Forwards (2)	$	—			$	0.4			$	—	$	0.4
	Liabilities:
	Other Accrued and Current Liabilities:
	Foreign Exchange Forwards (2)	$	—			$	0.4			$	—	$	0.4
	-1	Cash equivalents represent fair value as it consists of highly liquid investments with an original maturity of three months or less.
	-2	Primarily represents foreign currency forward and option contracts. Fair value is determined utilizing a market approach and considers a factor for nonperformance in the valuation.
Carrying Amount and Estimated Fair Value of Asset (Liability)	'
	The estimated fair values of other financial instruments subject to fair value disclosures, determined based on valuation models using discounted cash flow methodologies with market data inputs from globally recognized data providers and third-party quotes from major financial institutions (categorized as Level II in the fair value hierarchy), are as follows:
		Balance at
		31-Mar-14								31-Dec-13
		Carrying				Fair Value				Carrying		Fair Value
		Amount (Asset)				(Asset) Liability				Amount (Asset)		(Asset) Liability
		Liability								Liability
	Long-term Debt	$	1,047.10			$	1,081.40			$	1,047.00	$	1,054.80
	Credit Facilities	$	464.5			$	464.6			$	466.5	$	466.1

Other_Comprehensive_Income_Tab

Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2014
Reclassifications out of AOCI [Line Items]	'
Reclassifications out of AOCI [Table Text Block]	'
	The following table summarizes the reclassifications out of AOCI as of March 31, 2014 and 2013:
	Details About Accumulated Other Comprehensive Income Components	Affected Line Item in the Statement Where Net Income is Presented		Amount Reclassified from Accumulated Other Comprehensive Income
				Three Months Ended March 31,
				2014				2013
	Foreign Currency Translation Adjustments:
	Sale of Business	Other Income (Expense) – Net		$	—			$	—
	Defined Benefit Pension Plans:
	Amortization of Prior Service Costs	Selling and Administrative Expenses		$	(0.2	)		$	(1.6	)
		Operating Expenses		(0.1		)		(0.6		)
	Amortization of Actuarial Gain/Loss	Selling and Administrative Expenses		6.3				7.8
		Operating Expenses		2.3				2.7
	Total Before Tax			8.3				8.3
	Tax (Expense) or Benefit			(2.9		)		(2.8		)
	Total After Tax			$	5.4			$	5.5
	Derivative Financial Instruments:
	Amortization of Cash Flow Hedges	Interest Expense		$	—			$	—
	Total Before Tax			—				—
	Tax (Expense) or Benefit			—				—
	Total After Tax			$	—			$	—
	Total Reclassifications for the Period, Net of Tax			$	5.4			$	5.5
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
	The following table summarizes the changes in the accumulated balances for each component of accumulated other comprehensive income ("AOCI") as of March 31, 2014 and 2013:
		Foreign Currency Translation Adjustments				Defined Benefit Pension Plans				Derivative Financial Instruments		Total
	Balance, December 31, 2012	$	(151.2	)		$	(701.0	)		$	0.1	$	(852.1	)
	Other Comprehensive Income (Loss) Before Reclassifications	(12.4		)		—				—		(12.4		)
	Amounts Reclassified From Accumulated Other Comprehensive Income, net of tax	—				5.5				—		5.5
	Balance, March 31, 2013	$	(163.6	)		$	(695.5	)		$	0.1	$	(859.0	)
	Balance, December 31, 2013	$	(186.7	)		$	(552.2	)		$	0.1	$	(738.8	)
	Other Comprehensive Income (Loss) Before Reclassifications	(3.4		)		—				—		(3.4		)
	Amounts Reclassified From Accumulated Other Comprehensive Income, net of tax	—				5.4				—		5.4
	Balance, March 31, 2014	$	(190.1	)		$	(546.8	)		$	0.1	$	(736.8	)

Restructuring_Charge_Additiona

Restructuring Charge - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
	person	person
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring Charge	$4.90	$2.30
Number of employees exited	30	40
Severance	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring Charge	4.7	0.6
Severance and Termination	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring Charge	4.7	0.6
Number of employees impacted	55	45
Lease Termination Obligations and Other Exit Costs	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Restructuring Charge	$0.20	$1.70

Restructuring_Reserves_and_Uti

Restructuring Reserves and Utilization Related to Financial Flexibility Initiatives (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Restructuring Reserve [Rollforward]	'	'
Beginning Balance	$10.40	$11.70
Charge Taken during the period	4.9	2.3
Payments for Restructuring	5.9	4
Payments for Restructuring and Asset Impairment Related to Lease Termination	'	4.5	[1]
Ending Balance	9.4	9.5
Severance and Termination	'	'
Restructuring Reserve [Rollforward]	'	'
Beginning Balance	5.8	9.4
Charge Taken during the period	4.7	0.6
Payments for Restructuring	2	'
Payments for Restructuring and Asset Impairment Related to Lease Termination	'	3.7	[1]
Ending Balance	8.5	6.3
Lease Termination Obligations and Other Exit Costs	'	'
Restructuring Cost and Reserve [Line Items]	'	'
Impairment charges	'	0.5
Restructuring Reserve [Rollforward]	'	'
Beginning Balance	4.6	2.3
Charge Taken during the period	0.2	1.7
Payments for Restructuring	3.9	'
Payments for Restructuring and Asset Impairment Related to Lease Termination	'	0.8	[1]
Ending Balance	$0.90	$3.20
[1]	We incurred an asset impairment of $0.5 million in the first quarter of 2013 related to the termination of a lease.

Notes_Payable_and_Indebtedness2

Notes Payable and Indebtedness - Additional Information (Detail) (USD $)

3 Months Ended

3 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

3 Months Ended

12 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2012

Mar. 11, 2012

Mar. 31, 2012

Dec. 31, 2012

Mar. 31, 2012

Dec. 31, 2012

Mar. 31, 2014

Dec. 31, 2012

Mar. 31, 2014

Nov. 29, 2010

Mar. 31, 2014

Dec. 31, 2010

Dec. 31, 2012

Dec. 31, 2012

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2010

Nov. 29, 2010

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Senior Notes Due 2017 [Member]

Senior Notes Due 2017 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due 2022 [Member]

Senior Notes Due November 2015

Senior Notes Due November 2015

Senior Notes Due March Twenty Eleven [Member]

2013 Senior Notes

Senior Notes Due 2017 and 2022 [Member]

Revolving Credit Facility October 2016

Revolving Credit Facility October 2016

International Operations

International Operations

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Non-Operating Income (Expenses) - Net

Non-Operating Income (Expenses) - Net

Long-Term Fixed-Rate Notes

person

Senior Notes Due November 2015

Senior Notes Due November 2015

Non-Operating Income (Expenses) - Net

Fair Value Hedging [Member]

Fair Value Hedging [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-Term Fixed-Rate Notes issued, face value

'

'

'

'

'

'

'

'

'

$450,000,000

'

$300,000,000

'

$300,000,000

'

'

'

'

'

'

'

'

'

'

Long-Term Fixed-Rate Notes, annual interest rate

'

'

'

'

'

'

'

'

'

3.25%

'

4.38%

'

2.88%

'

5.50%

6.00%

'

'

'

'

'

'

'

Long-Term Fixed-Rate Notes, maturity date

'

'

'

'

'

'

'

'

'

1-Dec-17

'

1-Dec-22

'

'

'

'

'

'

'

'

'

'

'

'

Repayment of long-term fixed-rate notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

300,000,000

400,000,000

'

'

'

'

'

'

'

Debt Instrument, Debt Rating Decrease Threshold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3

'

'

'

'

'

'

Long-Term Fixed-Rate Notes

1,047,100,000

'

1,047,000,000

'

'

'

'

'

'

'

450,000,000

'

297,500,000

'

299,700,000

'

'

'

'

'

'

'

'

'

Long-Term Fixed-Rate Notes, discount

2,900,000

'

3,000,000

'

'

'

'

'

'

100,000

100,000

2,900,000

2,500,000

1,100,000

300,000

'

'

'

'

'

'

'

'

'

Long-Term Fixed-Rate Notes, underwriting and other fees

'

'

'

'

'

'

'

'

'

3,400,000

'

2,500,000

'

2,500,000

'

'

'

'

'

'

'

'

'

'

Derivative, Notional Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

125,000,000

125,000,000

Gain (loss) recognized in income on derivatives

'

'

'

'

'

'

-800,000

-300,000

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash received from interest rate derivatives terminated

'

'

'

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Carrying amount of hedged debt

'

'

'

2,200,000

'

4,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of carrying amount of hedged debt

'

'

'

300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum adjustments above initial interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.00%

'

'

'

'

'

'

Credit facility, maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

800,000,000

800,000,000

'

'

'

'

Debt Instrument, Number of Days From Issuance

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'364 days

'

'

'

'

'

Revolving credit facility, expiration date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2016-10

'2016-10

'

'

'

'

Credit facility Outstanding amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

464,500,000

466,500,000

'

'

'

'

Credit facility, interest percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.26%

1.24%

'

'

'

'

Uncommitted credit facility, maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,700,000

2,600,000

'

'

Contingent liability under open standby letters of credit in favor of third parties

4,700,000

'

4,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest paid for all outstanding debt

($1,300,000)

($700,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowings_Detail

Borrowings (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Maturing Within One Year:	'	'
Other	$0.10	$0.10
Total Debt Maturing Within One year	0.1	0.1
Debt Maturing After One Year:	'	'
Long-Term Fixed-Rate Notes (Net of a $3.2 million and $3.5 million discount as of September 30, 2013 and December 31, 2012, respectively)	1,047.10	1,047
Fair Value Adjustment Related to Hedged Debt	2.2	2.5
Credit Facility	464.5	466.5
Total Debt Maturing After One Year	$1,513.80	$1,516

Borrowings_Parenthetical_Detai

Borrowings (Parenthetical) (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
Long-Term Fixed-Rate Notes, discount	$2.90	$3

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]	'	'
Stock-based awards to acquire shares of common stock outstanding but not included in computation of diluted earnings per share (in shares)	17,058	896,151
Options, expiration period	'10 years	'
Minimum [Member]	'	'
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	'3 years	'
Maximum [Member]	'	'
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	'5 years	'
Performance based Restricted Stock Units [Member] | Minimum [Member]	'	'
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]	'	'
Share Based Compensation Arrangement by Share Based Payment Awards, Equity Instruments Other than Options, Percentage of the Target Award Ultimately Received by employee	0.00%	'
Performance based Restricted Stock Units [Member] | Maximum [Member]	'	'
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]	'	'
Share Based Compensation Arrangement by Share Based Payment Awards, Equity Instruments Other than Options, Percentage of the Target Award Ultimately Received by employee	200.00%	'

Earnings_Per_Share_Detail

Earnings Per Share (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share Disclosure [Line Items]	'	'
Net Income Attributable to D&B	$85.30	$52.90
Less: Allocation to Participating Securities	0	0
Net Income Attributable to D&B Common Shareholders - Basic and Diluted	$85.30	$52.90
Weighted Average Number of Shares Outstanding - Basic (in shares)	37.4	40.6
Dilutive Effect of Our Stock Incentive Plans (in shares)	0.3	0.3
Weighted Average Number of Shares Outstanding - Diluted (in shares)	37.7	40.9
Basic Earnings Per Share of Common Stock Attributable to D&B Common Shareholders (in dollars per share)	$2.28	$1.30
Diluted Earnings Per Share of Common Stock Attributable to D&B Common Shareholders (in dollars per share)	$2.26	$1.29

Share_Repurchases_Detail

Share Repurchases (Detail) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Accelerated Share Repurchases [Line Items]	'		'
Total number of share repurchases (in shares)	936,724		1,497,852
Total amount of share repurchases	$98		$121
Share Repurchase Programs	'		'
Accelerated Share Repurchases [Line Items]	'		'
Total number of share repurchases (in shares)	813,323	[1]	1,423,537	[1]
Total amount of share repurchases	85	[1]	115	[1]
Repurchases to Mitigate the Dilutive Effect of the Shares Issued Under Our Stock Incentive Plans and Employee Stock Purchase Plan (ESPP)	'		'
Accelerated Share Repurchases [Line Items]	'		'
Total number of share repurchases (in shares)	123,401	[2]	74,315	[2]
Total amount of share repurchases	$13	[2]	$6	[2]
[1]	In August 2012, our Board of Directors approved a $500 million increase to our then-existing $500 million share repurchase program, for a total program authorization of $1 billion. The then-existing $500 million share repurchase program was approved by our Board of Directors in October 2011 and commenced in November 2011 upon completion of our previous $200 million share repurchase program. We anticipate that this program will be completed during 2014.
[2]	In May 2010, our Board of Directors approved a four-year, five million share repurchase program to mitigate the dilutive effect of the shares issued under our stock incentive plans and ESPP. This program commenced in October 2010 and expires in October 2014. We anticipate that this program will be completed by October 2014, due to its expiration, regardless of whether all shares have been repurchased.

Share_Repurchases_Parenthetica

Share Repurchases (Parenthetical) (Detail) (USD $)	1 Months Ended			3 Months Ended	1 Months Ended
	Aug. 30, 2012	Aug. 31, 2012	Oct. 30, 2011	Dec. 31, 2012	Feb. 27, 2009	30-May-10
	Share repurchase plan, 2011	Share repurchase plan, 2011	Share repurchase plan, 2011	Share repurchase plan, 2011	Share repurchase plan, 2009	Share Repurchase Program, 2010
	Share Repurchase Programs	Share Repurchase Programs	Share Repurchase Programs	Share Repurchase Programs	Share Repurchase Programs	Repurchases to Mitigate the Dilutive Effect of the Shares Issued Under Our Stock Incentive Plans and Employee Stock Purchase Plan (ESPP)
Accelerated Share Repurchases [Line Items]	'	'	'	'	'	'
Amount approved for repurchase of shares	'	$500,000,000	$500,000,000	$1,000,000,000	$200,000,000	'
Repurchase program, commencement date	'	'	'2011-11	'	'	'2010-10
Repurchase program, period	'	'	'	'	'	'4 years
Share repurchase program, completion date	'2014-06	'	'	'	'	'2014-10
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	'	'	'	'	'	5,000,000

Other_Accrued_and_Current_Liab2

Other Accrued and Current Liabilities (Detail) (USD $)	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Schedule of Accrued Liabilities [Line Items]	'		'		'	'
Restructuring Reserve	$9.40		$10.40		$9.50	$11.70
Accrued Professional Fees, Current	34.3		34.6		'	'
Accrued Operating Expenses, Current	25.6		29.1		'	'
Bond Interest Payable	12.5	[1]	3.4	[1]	'	'
Other Accrued Liabilities, Current	34.2		38.6		'	'
Other Accrued And Current Liabilities	$116		$116.10		'	'
[1]	The increase in Bond Interest Payable from December 31, 2013 to March 31, 2014 was primarily attributed to the timing of the semi-annual interest payments.

Contingencies_Additional_Infor

Contingencies- Additional Information (Detail) (Shanghai Roadway D&B Marketing Services Co Ltd., USD $)	3 Months Ended			1 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2013	Sep. 30, 2012	Dec. 31, 2012
	Corporate Shutdown Costs [Member]	Corporate Shutdown Costs [Member]	Local Shutdown Costs [Member]	Pending Litigation [Member]	Fines and Imprisonment [Member]
				person	person
Commitments and Contingencies Disclosure [Line Items]	'	'	'	'	'
Loss Contingency, Number of Defendants	'	'	'	5	4
Shut-down costs	($0.30)	($1.60)	($0.10)	'	'

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Taxes [Line Items]	'	'
Effective tax rate	-75.00%	31.00%
Liabilities for Unrecognized Tax Benefits, Reduction Resulting from Settlement of IRS Audit	$58.70	'
Gross unrecognized tax benefits	44.5	'
Unrecognized tax benefits that, if recognized, would impact effective tax rate	41.6	'
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	61.2	'
Reasonably possible decrease in unrecognized tax benefits within next twelve months	15	'
Period within which Unrecognized Tax Benefits will possibly decrease	'12 months	'
Interest expense related to unrecognized tax benefits	0.3	0.4
Accrued interest expense related to unrecognized tax benefits	$4.30	$8.60

Components_of_Net_Periodic_Inc

Components of Net Periodic (Income) Cost Associated with Pension Plans and Postretirement Benefit Obligations (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Pension Plans	'	'
Components of Net Periodic Cost (Income):	'	'
Service cost	$1.10	$1.30
Interest cost	19.7	17.5
Expected return on plan assets	-25.2	-23.5
Amortization of prior service cost (credit)	0.1	0.1
Recognized actuarial loss (gain)	8.9	10.9
Net Periodic Cost (Income)	4.6	6.3
Postretirement Benefit Obligations	'	'
Components of Net Periodic Cost (Income):	'	'
Service cost	0.2	0.2
Interest cost	0.2	0.2
Expected return on plan assets	0	0
Amortization of prior service cost (credit)	-0.4	-2.3
Recognized actuarial loss (gain)	-0.3	-0.4
Net Periodic Cost (Income)	($0.30)	($2.30)

Pension_and_Postretirement_Ben2

Pension and Postretirement Benefits - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2014
	Non-Qualified U.S. and non-U.S. pension plans	Postretirement Benefit Plans	Scenario, Forecast [Member]
Pension and Other Postretirement Benefits Disclosure [Line Items]	'	'	'
Defined benefit plan, expected contribution to pension plans	'	'	$20
Defined benefit plan, expected contribution to postretirement plan	'	'	4
Employer contribution to employee benefit plans	$4.80	$0.60	'

Segment_Information_Additional

Segment Information - Additional Information (Detail) (USD $)	3 Months Ended		3 Months Ended					3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2014
	segment		Asia Pacific	Asia Pacific		Asia Pacific		Maximum
Segment Reporting Disclosure [Line Items]	'	'	'	'		'		'
Assets	$1,807.20	$1,890.30	'	$367.60	[1]	$371.90	[1]	'
Number of Operating Segments	3	'	'	'		'		'
Percentage of total revenue from single customer	'	'	'	'		'		10.00%
Percentage of Revenue from Divested and Other Businesses	'	'	2.00%	'		'		'
[1]	The decrease in assets in the Asia Pacific segment to $367.6 million at MarchB 31, 2014 from $371.9 million at DecemberB 31, 2013 was primarily due to the negative impact of foreign currency translation

Segment_Information_Detail

Segment Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Segment Reporting Disclosure [Line Items]	'		'
Revenue	$381.90		$381
Divested and other revenue	0.1		0.8
Operating Income (Loss)	82.3		87.8
Non-Operating Income (Expense), Net	-33.5	[1]	-10.9	[1]
Income Before Provision for Income Taxes and Equity in Net Income of Affiliates	48.8		76.9
Asia Pacific	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	41.7		41.4
Europe and Other International Markets	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	61.2		56.4
North America [Member]	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	279		283.2
Total Segments	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	381.8		380.2
Operating Income (Loss)	100.9		102.4
Total Segments | Asia Pacific	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	41.7		40.8
Operating Income (Loss)	6.2		2.4
Total Segments | Europe and Other International Markets	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	61.1		56.2
Operating Income (Loss)	16.7		14
Total Segments | North America [Member]	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	279		283.2
Operating Income (Loss)	78		86
Corporate and Other	'		'
Segment Reporting Disclosure [Line Items]	'		'
Operating Income (Loss)	($18.60)	[2]	($14.60)	[2]
[1]	The following table summarizes bNon-Operating Income (Expense):bB For the Three Months Ended March 31,B 2014B 2013Interest Income$0.4B $0.2Interest Expense(10.6)B (9.9)Other Income (Expense) - Net (a)(23.3)B (1.2)Non-Operating Income (Expense) - Net$(33.5)B $(10.9)B (a) The increase in Other Expense was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moodybs Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.
[2]	The following table summarizes bCorporate and Other:bB For the Three Months Ended March 31,B 2014B 2013Corporate Costs$(13.4)B $(10.7)Restructuring Expense(4.9)B (2.3)Legal and Other Professional Fees and Shut-Down Costs Related to Matters in China(0.3)B (1.6)Total Corporate and Other$(18.6)B $(14.6)

Segment_Information_Parentheti

Segment Information (Parenthetical) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Segment Reporting Disclosure [Line Items]	'		'
Corporate and Other	($18.60)		($14.60)
Interest Income	0.4		0.2
Interest Expense	-10.6		-9.9
Other Income (Expense) - Net	-23.3	[1]	-1.2	[1]
Non-Operating Income (Expense) - Net	-33.5	[2]	-10.9	[2]
Corporate Costs	'		'
Segment Reporting Disclosure [Line Items]	'		'
Corporate and Other	-13.4		-10.7
Restructuring accruals	'		'
Segment Reporting Disclosure [Line Items]	'		'
Corporate and Other	-4.9		-2.3
Legal Fees And Other Shut-Down Costs Associated with Matters in China	'		'
Segment Reporting Disclosure [Line Items]	'		'
Corporate and Other	($0.30)		($1.60)
Asia Pacific	'		'
Segment Reporting Disclosure [Line Items]	'		'
Percentage Of Total Revenue From Divested And Other Business	'		2.00%
[1]	The increase in Other Expense was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moodybs Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.
[2]	The following table summarizes bNon-Operating Income (Expense):bB For the Three Months Ended March 31,B 2014B 2013Interest Income$0.4B $0.2Interest Expense(10.6)B (9.9)Other Income (Expense) - Net (a)(23.3)B (1.2)Non-Operating Income (Expense) - Net$(33.5)B $(10.9)B (a) The increase in Other Expense was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moodybs Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.

Supplemental_Geographic_and_Cu

Supplemental Geographic and Customer Solution Set Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Segment Reporting Disclosure [Line Items]	'		'
Revenue	$381.90		$381
Divested and other revenue	0.1		0.8
Risk Management Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Divested and other revenue	0.1		0.2
Sale and Marketing Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Divested and other revenue	0		0.6
Segment, Continuing Operations	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	381.8		380.2
Divested and other revenue	0.1	[1]	0.8	[1]
Segment, Continuing Operations | Risk Management Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	249.7		247.7
Segment, Continuing Operations | Sale and Marketing Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	132.1		132.5
North America	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	279		283.2
North America | Segment, Continuing Operations	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	279		283.2
Divested and other revenue	0		0
North America | Segment, Continuing Operations | Risk Management Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	163.3		166
North America | Segment, Continuing Operations | Sale and Marketing Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	115.7		117.2
Asia Pacific	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	41.7		41.4
Asia Pacific | Segment, Continuing Operations	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	41.7		40.8
Divested and other revenue	0	[1]	0.6	[1]
Asia Pacific | Segment, Continuing Operations | Risk Management Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	36.7		35.6
Asia Pacific | Segment, Continuing Operations | Sale and Marketing Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	5		5.2
Europe and Other International Markets	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	61.2		56.4
Europe and Other International Markets | Segment, Continuing Operations	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	61.1		56.2
Divested and other revenue	0.1		0.2
Europe and Other International Markets | Segment, Continuing Operations | Risk Management Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	49.7		46.1
Europe and Other International Markets | Segment, Continuing Operations | Sale and Marketing Solutions	'		'
Segment Reporting Disclosure [Line Items]	'		'
Revenue	$11.40		$10.10
[1]	During the fourth quarter of 2013 and in the first quarter of 2014, we ceased the operations of: (a) our India Event Planning and Rural Marketing Businesses in our Asia Pacific segment. These businesses contributed 2% to our Asia Pacific total revenue for the three months ended March 31, 2013; and (b) our Ireland Small Corporate Registry Business in our Europe and Other International Markets segment. This business contributed less than 1% to our Europe and Other International Markets total revenue for each of the three months ended March 31, 2014 and 2013. These businesses have been classified as bDivested and Other Businesses.b The following table represents Divested and Other Businesses revenue by solution set: For the Three Months Ended March 31,B 2014B 2013Divested and Other Businesses: Risk Management Solutions$0.1B $0.2SalesB & Marketing SolutionsbB 0.6Total Divested and Other Businesses Revenue$0.1B $0.8

Supplemental_Geographic_and_Cu1

Supplemental Geographic and Customer Solution Set Information (Parenthetical) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Disclosure [Line Items]	'		'	'
Goodwill	$585.60		'	$589.10
Assets	1,807.20		'	1,890.30
Asia Pacific	'		'	'
Segment Reporting Disclosure [Line Items]	'		'	'
Goodwill	207.2	[1]	'	210.2	[1]
Percentage of Revenue from Divested and Other Businesses	'		2.00%	'
Assets	367.6	[2]	'	371.9	[2]
North America	'		'	'
Segment Reporting Disclosure [Line Items]	'		'	'
Goodwill	262.7		'	265.1
Assets	781.5	[3]	'	843.2	[3]
Europe and Other International Markets	'		'	'
Segment Reporting Disclosure [Line Items]	'		'	'
Goodwill	115.7		'	113.8
Percentage of Revenue from Divested and Other Businesses	1.00%		1.00%	'
Assets	455.2	[4]	'	445.4	[4]
Corporate and Other [Member]	'		'	'
Segment Reporting Disclosure [Line Items]	'		'	'
Assets	$202.90	[4],[5]	'	$229.80	[4],[5]
[1]	{F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmMwNTk2MzI0OTFkYjRhMjZhZjEwMmVmNWZkMWNlYzYwfFRleHRTZWxlY3Rpb246MzI3RDc5OTQzRTgyQzY3MEMwRjRCMUQyMDFEMUZCQUQM}
[2]	The decrease in assets in the Asia Pacific segment to $367.6 million at MarchB 31, 2014 from $371.9 million at DecemberB 31, 2013 was primarily due to the negative impact of foreign currency translation
[3]	The decrease in assets in the North America segment to $781.5 million at MarchB 31, 2014 from $843.2 million at DecemberB 31, 2013 was primarily due to a decrease in accounts receivable compared to the fourth quarter of 2013 resulting from the cyclical sales pattern of our North America business.
[4]	The increase in assets in the Europe and Other International Markets segment to $455.2 million at MarchB 31, 2014 from $445.4 million at DecemberB 31, 2013 was primarily due to an increase in cash as a result of higher collections.
[5]	The decrease in assets in Corporate and Other to $202.9 million at MarchB 31, 2014 from $229.8 million at DecemberB 31, 2013 was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moodybs Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.

Segment_Information_Schedule_o

Segment Information Schedule of Divested and Other Business Revenue (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'		'	'
Divested and other revenue	$0.10		$0.80	'
Assets	1,807.20		'	1,890.30
Goodwill	585.6		'	589.1
Risk Management Solutions	'		'	'
Segment Reporting Information [Line Items]	'		'	'
Divested and other revenue	0.1		0.2	'
Sale and Marketing Solutions	'		'	'
Segment Reporting Information [Line Items]	'		'	'
Divested and other revenue	0		0.6	'
North America	'		'	'
Segment Reporting Information [Line Items]	'		'	'
Assets	781.5	[1]	'	843.2	[1]
Goodwill	262.7		'	265.1
Asia Pacific	'		'	'
Segment Reporting Information [Line Items]	'		'	'
Assets	367.6	[2]	'	371.9	[2]
Goodwill	207.2	[3]	'	210.2	[3]
Europe and Other International Markets	'		'	'
Segment Reporting Information [Line Items]	'		'	'
Assets	455.2	[4]	'	445.4	[4]
Goodwill	115.7		'	113.8
Total Segments	'		'	'
Segment Reporting Information [Line Items]	'		'	'
Assets	1,604.30		'	1,660.50
Corporate and Other	'		'	'
Segment Reporting Information [Line Items]	'		'	'
Assets	$202.90	[4],[5]	'	$229.80	[4],[5]
[1]	The decrease in assets in the North America segment to $781.5 million at MarchB 31, 2014 from $843.2 million at DecemberB 31, 2013 was primarily due to a decrease in accounts receivable compared to the fourth quarter of 2013 resulting from the cyclical sales pattern of our North America business.
[2]	The decrease in assets in the Asia Pacific segment to $367.6 million at MarchB 31, 2014 from $371.9 million at DecemberB 31, 2013 was primarily due to the negative impact of foreign currency translation
[3]	{F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmMwNTk2MzI0OTFkYjRhMjZhZjEwMmVmNWZkMWNlYzYwfFRleHRTZWxlY3Rpb246MzI3RDc5OTQzRTgyQzY3MEMwRjRCMUQyMDFEMUZCQUQM}
[4]	The increase in assets in the Europe and Other International Markets segment to $455.2 million at MarchB 31, 2014 from $445.4 million at DecemberB 31, 2013 was primarily due to an increase in cash as a result of higher collections.
[5]	The decrease in assets in Corporate and Other to $202.9 million at MarchB 31, 2014 from $229.8 million at DecemberB 31, 2013 was primarily due to the reduction of a contractual receipt under the Tax Allocation Agreement between Moodybs Corporation and D&B as it relates to the effective settlement of audits for the 2007 - 2009 tax years.

Financial_Instruments_Addition

Financial Instruments - Additional Information (Detail) (USD $)

3 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2012

Mar. 11, 2012

Mar. 31, 2012

Dec. 31, 2012

Mar. 31, 2012

Nov. 29, 2010

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2010

Nov. 29, 2010

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Senior Notes Due November 2015

Foreign Exchange Contract [Member]

Foreign Exchange Contract [Member]

Interest Rate Contract [Member]

Interest Rate Contract [Member]

Non-Operating Income (Expenses) - Net

Non-Operating Income (Expenses) - Net

Non-Operating Income (Expenses) - Net

Senior Notes Due November 2015

Senior Notes Due November 2015

Long-Term Fixed-Rate Notes

Fair Value Hedging [Member]

Fair Value Hedging [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Long-Term Fixed-Rate Notes, face value

'

'

'

'

'

'

'

$300,000,000

'

'

'

'

Derivative, Notional Amount

'

'

'

'

'

'

'

'

295,900,000

280,500,000

125,000,000

125,000,000

Gain (loss) recognized in income on derivatives

'

'

'

'

-800,000

-300,000

500,000

'

'

'

'

'

Cash received from interest rate derivatives terminated

'

'

5,000,000

'

'

'

'

'

'

'

'

'

Carrying amount of hedged debt

'

2,200,000

'

4,900,000

'

'

'

'

'

'

'

'

Foreign Exchange and Option Contracts Maturities, Maximun Period

'12 months

'

'

'

'

'

'

'

'

'

'

'

Amortization of carrying amount of hedged debt

'

$300,000

'

'

'

'

'

'

'

'

'

'

Fair_Values_of_Derivative_Inst

Fair Values of Derivative Instruments in Consolidated Balance Sheet (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Assets Derivatives	$0.20	$0.40
Liabilities Derivative	0.3	0.4
Derivatives not designated as hedging instruments	'	'
Derivatives, Fair Value [Line Items]	'	'
Assets Derivatives	0.2	0.4
Liabilities Derivative	0.3	0.4
Derivatives not designated as hedging instruments | Other Accrued and Current Liabilities | Foreign exchange forward contracts	'	'
Derivatives, Fair Value [Line Items]	'	'
Liabilities Derivative	0.3	0.4
Derivatives not designated as hedging instruments | Other Current Assets | Foreign exchange forward contracts	'	'
Derivatives, Fair Value [Line Items]	'	'
Assets Derivatives	$0.20	$0.40

Effect_of_Derivative_Instrumen

Effect of Derivative Instruments on Consolidated Statement of Operations and Comprehensive Income (Detail) (Not Designated as Hedging Instrument [Member], Forward exchange contracts, Non-Operating Income (Expenses) - Net, USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Not Designated as Hedging Instrument [Member] | Forward exchange contracts | Non-Operating Income (Expenses) - Net	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Gain or (Loss) Recognized in Income on Derivative	($4.90)	($5.30)

Assets_and_Liabilities_Measure

Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Assets:	'		'
Cash Equivalents	$98.70	[1]	$95.90	[2]
Other Current Assets | Foreign exchange forward contracts	'		'
Assets:	'		'
Assets measured at fair value	0.2	[3]	0.4	[3]
Other Accrued and Current Liabilities | Foreign exchange forward contracts	'		'
Liabilities:	'		'
Liabilities measured at fair value	0.3	[3]	0.4	[3]
Quoted Prices in Active Markets for Identical Assets (Level I)	'		'
Assets:	'		'
Cash Equivalents	98.7	[1]	95.9	[2]
Quoted Prices in Active Markets for Identical Assets (Level I) | Other Current Assets | Foreign exchange forward contracts	'		'
Assets:	'		'
Assets measured at fair value	0	[3]	0	[3]
Quoted Prices in Active Markets for Identical Assets (Level I) | Other Accrued and Current Liabilities | Foreign exchange forward contracts	'		'
Liabilities:	'		'
Liabilities measured at fair value	0	[3]	0	[3]
Significant Other Observable Inputs (Level II)	'		'
Assets:	'		'
Cash Equivalents	0	[1]	0	[2]
Significant Other Observable Inputs (Level II) | Other Current Assets | Foreign exchange forward contracts	'		'
Assets:	'		'
Assets measured at fair value	0.2	[3]	0.4	[3]
Significant Other Observable Inputs (Level II) | Other Accrued and Current Liabilities | Foreign exchange forward contracts	'		'
Liabilities:	'		'
Liabilities measured at fair value	0.3	[3]	0.4	[3]
Significant Unobservable Inputs (Level III)	'		'
Assets:	'		'
Cash Equivalents	0	[1]	0	[2]
Significant Unobservable Inputs (Level III) | Other Current Assets | Foreign exchange forward contracts	'		'
Assets:	'		'
Assets measured at fair value	0	[3]	0	[3]
Significant Unobservable Inputs (Level III) | Other Accrued and Current Liabilities | Foreign exchange forward contracts	'		'
Liabilities:	'		'
Liabilities measured at fair value	$0	[3]	$0	[3]
[1]	Cash equivalents represent fair value as it consists of highly liquid investments with an original maturity of three months or less.
[2]	(1)Cash equivalents represent fair value as it consists of highly liquid investments with an original maturity of three months or less.
[3]	Primarily represents foreign currency forward and option contracts. Fair value is determined utilizing a market approach and considers a factor for nonperformance in the valuation.

Assets_and_Liabilities_Measure1

Assets and Liabilities Measured at Fair Value on Recurring Basis (Parenthetical) (Detail) (Senior Notes Due November Twenty Fifteen [Member], Fair Value Hedging [Member], Swap Arrangement, USD $)	Dec. 31, 2010	Nov. 29, 2010
In Millions, unless otherwise specified
Senior Notes Due November Twenty Fifteen [Member] | Fair Value Hedging [Member] | Swap Arrangement	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivative, Notional Amount	$125	$125

Carrying_Amount_and_Estimated_

Carrying Amount and Estimated Fair Value of Asset (Liability) (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Long-term Debt, Carrying Amount (Asset) Liability	$1,047.10	$1,047
Credit Facilities, Carrying Amount (Asset) Liability	464.5	466.5
Fair Value (Asset) Liability	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Long-term Debt, fair value (Asset) Liability	1,081.40	1,054.80
Credit Facilities, fair value (Asset) Liability	$464.60	$466.10

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income [Roll Forward]	'	'
Beginning Balance	($738.80)	($852.10)
Other Comprehensive Income (Loss), before reclassifications, Net of Tax	-3.4	-12.4
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	5.4	5.5
Ending Balance	-736.8	-859
Accumulated Translation Adjustment [Member]	'	'
Accumulated Other Comprehensive Income [Roll Forward]	'	'
Beginning Balance	-186.7	-151.2
Other Comprehensive Income (Loss), before reclassifications, Net of Tax	-3.4	-12.4
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0
Ending Balance	-190.1	-163.6
Accumulated Defined Benefit Plans Adjustment [Member]	'	'
Accumulated Other Comprehensive Income [Roll Forward]	'	'
Beginning Balance	-552.2	-701
Other Comprehensive Income (Loss), before reclassifications, Net of Tax	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	5.4	5.5
Ending Balance	-546.8	-695.5
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'
Accumulated Other Comprehensive Income [Roll Forward]	'	'
Beginning Balance	0.1	0.1
Other Comprehensive Income (Loss), before reclassifications, Net of Tax	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0
Ending Balance	$0.10	$0.10

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) Reclassifications out of AOCI (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Reclassifications out of AOCI [Line Items]	'	'
Income Tax Expense (Benefit)	$36.70	($23.80)
Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'
Reclassifications out of AOCI [Line Items]	'	'
Net Income (Loss) Available to Common Stockholders, Basic	5.4	5.5
Accumulated Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Income (Expense)	'	'
Reclassifications out of AOCI [Line Items]	'	'
Other Comprehensive Income Loss Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI Realized Upon Sale or Liquidation Net of Tax	0	0
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'
Reclassifications out of AOCI [Line Items]	'	'
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	8.3	8.3
Income Tax Expense (Benefit)	-2.9	-2.8
Net Income (Loss) Available to Common Stockholders, Basic	5.4	5.5
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Selling, General and Administrative Expenses [Member]	'	'
Reclassifications out of AOCI [Line Items]	'	'
Other Comprehensive (Income) Loss, Amortization adjustment from AOCI, Pension and Other Postretirement Benefit Plans,for Net Prior Service Cost (credit),before tax	-0.2	-1.6
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax	6.3	7.8
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Operating Expenses	'	'
Reclassifications out of AOCI [Line Items]	'	'
Other Comprehensive (Income) Loss, Amortization adjustment from AOCI, Pension and Other Postretirement Benefit Plans,for Net Prior Service Cost (credit),before tax	-0.1	-0.6
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax	2.3	2.7
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'
Reclassifications out of AOCI [Line Items]	'	'
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	0	0
Income Tax Expense (Benefit)	0	0
Net Income (Loss) Available to Common Stockholders, Basic	0	0
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedging [Member]	'	'
Reclassifications out of AOCI [Line Items]	'	'
Interest Income (Expense), Net	$0	$0

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (USD $)

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

Mar. 31, 2014

Mar. 31, 2013

6-May-14

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

6-May-14

Aug. 31, 2012

Oct. 30, 2011

Dec. 31, 2012

30-May-10

6-May-14

31-May-14

Dividend Declared

Repurchase Program To Mitigate Dilutive Effect [Member]

Repurchase Program To Mitigate Dilutive Effect [Member]

Common Stock Repurchase Program [Member]

Common Stock Repurchase Program [Member]

Stock Repurchase Plan One [Member]

Stock Repurchase Plan One [Member]

Stock Repurchase Plan One [Member]

Stock Repurchase Plan One [Member]

Share Repurchase Program Twenty Ten [Member]

Share Repurchase Program Twenty Ten [Member]

Scenario, Forecast [Member]

Dividend Declared

Common Stock Repurchase Program [Member]

Common Stock Repurchase Program [Member]

Common Stock Repurchase Program [Member]

Repurchase Program To Mitigate Dilutive Effect [Member]

Repurchase Program To Mitigate Dilutive Effect [Member]

Dividend Declared

Subsequent Event [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividend declared (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.44

Stock Repurchase Program, Period in Force

'

'

'

'

'

'

'

'

'

'

'

'4 years

'

'

Stock Repurchase Program, Authorized Amount

'

'

'

'

'

'

'

'

$500,000,000

$500,000,000

$1,000,000,000

'

'

'

Treasury Stock, Shares, Acquired

936,724

1,497,852

349,200

123,401

[1]

74,315

[1]

813,323

[2]

1,423,537

[2]

310,278

'

'

'

'

38,922

'

Treasury Stock, Value, Acquired, Cost Method

$98,000,000

$121,000,000

$36,000,000

$13,000,000

[1]

$6,000,000

[1]

$85,000,000

[2]

$115,000,000

[2]

$32,000,000

'

'

'

'

$4,000,000

'

Stock Repurchase Program, Number of Shares Authorized to be Repurchased

'

'

'

'

'

'

'

'

'

'

'

5,000,000

'

'

[1]

In May 2010, our Board of Directors approved a four-year, five million share repurchase program to mitigate the dilutive effect of the shares issued under our stock incentive plans and ESPP. This program commenced in October 2010 and expires in October 2014. We anticipate that this program will be completed by October 2014, due to its expiration, regardless of whether all shares have been repurchased.

[2]

In August 2012, our Board of Directors approved a $500 million increase to our then-existing $500 million share repurchase program, for a total program authorization of $1 billion. The then-existing $500 million share repurchase program was approved by our Board of Directors in October 2011 and commenced in November 2011 upon completion of our previous $200 million share repurchase program. We anticipate that this program will be completed during 2014.