Outfront Media Transportation Advertising S-4 22 Dec 14 Registration of securities issued in business combination transactions Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	9 Months Ended
	Sep. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	Outfront Media Inc.
Entity Central Index Key	1579877
Entity Filer Category	Non-accelerated Filer
Document Type	S-4
Document Period End Date	30-Sep-14
Amendment Flag	FALSE

Statement_of_Financial_Positio

Statement of Financial Position (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets, Current [Abstract]
Cash and cash equivalents	$272.20	$29.80	$20.20
Receivables, less allowance	175.6	178.8	175.1
Deferred income tax assets, net	2	24.5	26.1
Prepaid lease and transit franchise costs	75.9	62.7	65.8
Other prepaid expenses	22.7	15.5	21.8
Other current assets	12.4	5.9	6
Total current assets	560.8	317.2	315
Assets, Noncurrent [Abstract]
Property and equipment, net	704.4	755.4	807.9
Goodwill	1,860.40	1,865.70	1,877.20
Intangible assets	320.1	364.4	420
Other assets	77.1	52.8	44.8
Total assets	3,522.80	3,355.50	3,464.90
Liabilities, Current [Abstract]
Accounts payable	54.3	80	77.7
Accrued compensation	28.4	28.2	30.3
Accrued interest	28.4	0.1
Accrued lease costs	18.1	17.7	19.2
Other accrued expenses	42.6	37.7
Other accrued expenses (including accrued interest)		37.8	38.2
Deferred revenues	25.7	22.9	15.9
Other current liabilities	40.4	25.6	24.3
Total current liabilities	237.9	212.2	205.6
Liabilities, Noncurrent [Abstract]
Long-term debt	1,598.20	0	0
Deferred income tax liabilities, net	22.8	288.5	313.8
Asset retirement obligation	32.3	31.7	30.6
Other liabilities	64.6	68.7	71
Total liabilities	1,955.80	601.1	621
Commitments and Contingencies
Stockholders’ equity/invested equity:
Common Stock	1.2	0
Additional paid-in capital	1,456.60	0
Retained earnings	188.4	0
Invested capital	0	2,829.50	2,909.90
Accumulated other comprehensive loss	-79.2	-75.1	-66
Total stockholders’ equity	1,567
Total invested equity		2,754.40	2,843.90
Total liabilities and stockholders’ equity/invested equity	$3,522.80	$3,355.50	$3,464.90

Statement_of_Financial_Positio1

Statement of Financial Position (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
In Millions, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$14.90	$15.70	$19.30
Common Stock, Authorized	450,000,000	0
Common Stock, Issued	120,010,462	0
Common Stock, Outstanding	120,010,462	0

Statement_of_Operations

Statement of Operations (USD $)	9 Months Ended				12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Revenues [Abstract]
Billboard	$690.20		$685.80		$925.70		$913.60		$894.20
Transit and other	268.6		264.3		368.3		371		382.9
Total revenues	958.8		950.1		1,294	[1]	1,284.60	[1]	1,277.10	[1]
Expenses:
Operating	512.3		504.5		686.9		700.1		689.4
Selling, general and administrative	161.1		146.8		199.8		181.8		178.4
Restructuring charges	6.2	[2]	0	[2]	0		2.5		3
Acquisition costs	1.4	[2]	0	[2]
Net gain (loss) on dispositions	1.4		9.8		27.3		-2.2		-2
Depreciation	79.3		78.3		104.5		105.9		109
Amortization	67.3		68.2		91.3		90.9		102.9
Total expenses	826.2		788		1,055.20		1,083.40		1,084.70
Operating income	132.6		162.1		238.8		201.2		192.4
Interest income (expense), net	-57.3		0
Other income (expense), net	-0.5		0		-1.2		-1		0.8
Income before income taxes and equity in earnings of investee companies	74.8		162.1		237.6		200.2		193.2
Benefit (provision) for income taxes	202.9		-70.5		-96.6		-89		-87.8
Equity in earnings of investee companies, net of tax	1.4		1.9		2.5		2.2		1.7
Net income	$279.10		$93.50		$143.50		$113.40		$107.10
Net income per common share:
Basic	$2.49		$0.83		$1.48		$1.17		$1.10
Diluted	$2.47		$0.83		$1.48		$1.17		$1.10
Basic and Diluted					$1.48		$1.17		$1.10
Weighted average shares outstanding:
Basic	112.3		112.3		97		97		97
Diluted	112.8		112.8		97		97		97
Basic and Diluted					97		97		97
Dividends declared per common share	$0.74		$0
[1]	Revenues classifications are based on customers’ locations.
[2]	Restructuring charges (including stock-based compensation of $3.5 million), costs related to the Acquisition and stock-based compensation are classified as Corporate expense.

Statement_of_Comprehensive_Inc

Statement of Comprehensive Income Statement (USD $)	3 Months Ended								9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]
Net income	$50	$37.20	$36.40	$19.90	$18.80	$38.70	$37.20	$18.70	$279.10	$93.50	$143.50	$113.40	$107.10
Other comprehensive income (loss), net of tax:
Cumulative translation adjustments									-3.1	-12.3	-14.9	11	-14.3
Amortization of net actuarial loss									0.2	0.4	5.8	-1.4	-3.2
Deferred tax rate adjustment									-1.2	0
Total other comprehensive income (loss), net of tax									-4.1	-11.9	-9.1	9.6	-17.5
Total comprehensive income									$275	$81.60	$134.40	$123	$89.60

Statement_of_Invested_EquitySh

Statement of Invested Equity/Shareholders' Equity (USD $)	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Invested Capital	Accumulated Other Comprehensive Loss	Treasury Stock, at Cost
In Millions, except Share data
Invested Equity, Beginning Balance at Dec. 31, 2010					$3,221.40	($58.10)
Net income	107.1				107.1
Other comprehensive income (loss)	-17.5					-17.5
Net contribution from (distribution to) CBS					-262.3
Invested Equity, Ending Balance at Dec. 31, 2011	2,990.60				3,066.20	-75.6
Net income	113.4				113.4
Other comprehensive income (loss)	9.6					9.6
Net contribution from (distribution to) CBS					-269.7
Invested Equity, Ending Balance at Dec. 31, 2012	2,843.90				2,909.90	-66
Net income	93.5				93.5
Other comprehensive income (loss)	-11.9					-11.9
Net contribution from (distribution to) CBS	-126.9				-126.9
Invested Equity, Ending Balance at Sep. 30, 2013	2,798.60				2,876.50	-77.9
Invested Equity, Beginning Balance at Dec. 31, 2012	2,843.90				2,909.90	-66
Net income	143.5				143.5
Other comprehensive income (loss)	-9.1					-9.1
Net contribution from (distribution to) CBS					-223.9
Shares of Common Stock at Dec. 31, 2013	0
Invested Equity, Ending Balance at Dec. 31, 2013	2,754.40				2,829.50	-75.1
Net income	279.1			278	1.1
Other comprehensive income (loss)	-4.1					-4.1
Initial Public Offering (shares)		23,000,000
Initial Public Offering	615	0.2	614.8
Stock-based compensation: Amortization	9		9
Shares paid for tax withholding for stock-based payments	-0.1						-0.1
Retirement of treasury stock	0		-0.1				0.1
Conversion to stockholders' equity (shares)		97,000,000
Conversion to stockholders' equity	0	1	2,829.60		-2,830.60
Distribution of debt and IPO proceeds to CBS	-2,038.80		-2,038.80
Dividends	-89.6			-89.6
Net contribution from (distribution to) CBS	42.1		42.1
Stockholders' Equity, Ending Balance at Sep. 30, 2014	$1,567	$1.20	$1,456.60	$188.40	$0	($79.20)
Shares of Common Stock at Sep. 30, 2014	120,010,462	120,000,000

Statement_of_Invested_EquitySh1

Statement of Invested Equity/Shareholders' Equity (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Statement of Stockholders' Equity [Abstract]
Common Stock, Par Value	$0.01
Dividends declared per common share	$0.74	$0

Statement_of_Cash_Flows

Statement of Cash Flows (USD $)	9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Operating Activities:
Net income	$279.10	$93.50	$143.50		$113.40		$107.10
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation and amortization	146.6	146.5	195.8		196.8		211.9
Deferred tax (benefit) liability	-246.4	4.7	-15.5		-6.6		32.8
Stock-based compensation	10.9	5.8	7.5	[1]	5.7	[1]	5	[1]
Provision for doubtful accounts	2.3	0.3	0.4		3.1		3
Net (gain) loss on dispositions	-1.4	-9.8	-27.3		2.2		2
Equity in earnings of investee companies, net of tax	-1.4	-1.9	-2.5		-2.2		-1.7
Distributions from investee companies	3.2	3.9	4.4		6.4		6.2
Amortization of deferred financing costs and debt discount	10.7	0
Increase (Decrease) in Operating Capital [Abstract]
(Increase) decrease in receivables			-7.1		7.6		7.6
Decrease in prepaid expenses and other current assets			9.5		3.9		1.2
Increase (decrease) in accounts payable and accrued expenses			-32.2		-26.5		-35.7
Increase (decrease) in deferred revenues			7.1		0.9		-2.5
(Decrease) increase in income taxes			-6.5		-3.8		1.8
Other, net			4		5		1.4
Change in assets and liabilities, net of investing and financing activities	-19.1	-64.3
Net cash flow provided by operating activities	184.5	178.7	281.1		305.9		340.1
Investing Activities:
Capital expenditures	-43.6	-41.5	-60.9		-48.2		-43.6
Acquisitions	0	-10.7	-11.5		-0.4		-7.9
Proceeds from dispositions	2.3	11.1	28.7		0.5		0.8
Net cash flow used for investing activities	-41.3	-41.1	-43.7		-48.1		-50.7
Financing Activities:
Proceeds from IPO	615	0
Proceeds from long-term debt borrowings	1,598	0
Deferred financing fees	-24.8	0
Excess tax benefit from stock-based compensation	0	5.5	5.8		2.9		2.3
Distribution of debt and IPO proceeds to CBS	-2,038.80	0
Net cash contribution from (distribution to) CBS	39.8	-138.6	-232.6		-279.7		-269.4
Dividends	-88.8	0
Other			-0.2		-0.2		-0.2
Net cash flow provided by (used for) financing activities	100.4	-133.1	-227		-277		-267.3
Effect of exchange rate changes on cash and cash equivalents	-1.2	-0.6	-0.8		1.8		-3.5
Net increase in cash and cash equivalents	242.4	3.9	9.6		-17.4		18.6
Cash and cash equivalents at beginning of period	29.8	20.2	20.2		37.6		19
Cash and cash equivalents at end of period	272.2	24.1	29.8		20.2		37.6
Supplemental disclosure of cash flow Information:
Cash paid for income taxes	31.4	75.3	112.8		96.5		50.9
Cash paid for interest	25.6	0
Non-cash investing and financing activities:
Investments in investee companies			13.1		0		0
Accrued purchases of property and equipment	$3.50	$1.70	$12.80		$15.50		$10.10
[1]	(a)Stock-based compensation is classified as a Corporate expense.

Description_of_Business_and_Ba

Description of Business and Basis of Presentation	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION
		Description of Business—Outfront Media Inc. (the “Company”) was formed as an indirect wholly owned subsidiary of CBS Corporation (“CBS”). CBS completed a series of reorganization transactions resulting in the entities comprising CBS’s Outdoor Americas operating segment being consolidated under the Company. The Company provides advertising space (“displays”) on out-of-home advertising structures and sites in the United States, Canada and Latin America. The Company’s portfolio includes billboard displays, which are predominantly located in densely populated major metropolitan areas and along high-traffic expressways and major commuting routes. The Company also has a number of exclusive multiyear contracts to operate advertising displays in municipal transit systems. The Company has displays in all of the 25 largest markets in the United States and over 180 markets across the United States, Canada and Latin America. The Company manages its business through two segments—United States and International.
	Description of Business	The Company filed a registration statement on Form S-11 with the Securities and Exchange Commission (“SEC”) with respect to an initial public offering of its common stock (the “Offering”). Upon completion of the Offering, CBS expects to indirectly own at least 80% of Outfront Media Inc.’s outstanding common stock and Outfront Media Inc. will continue to be controlled by CBS. In January 2014, in connection with this transaction, the Company incurred $1.6 billion of indebtedness (“Formation Borrowings”) (See Note 14).
		On March 14, 2014, the Company’s Board of Directors declared a 970,000-for-one split of the Company’s common stock effected through a stock dividend to CBS. As a result of the stock split, the 100 shares of the Company’s common stock outstanding were converted into 97,000,000 shares, par value $0.01 per share. Accordingly, all share and per share data reflect this stock split for all periods presented. Also on March 14, 2014, the Company’s Board of Directors declared a contingent dividend to CBS, payable in an aggregate amount of 3,000,000 shares of the Company’s common stock less the total number of shares of the Company’s common stock actually purchased by the underwriters in the Offering pursuant to their option to purchase an additional 3,000,000 shares. These shares of the Company’s common stock, if any, are payable to CBS at the end of a 30-day period in which the underwriters may exercise this option.
	Outfront Media Inc. (the “Company”) and its subsidiaries (collectively, “we,” “us” or “our”) was formed as an indirect wholly owned subsidiary of CBS Corporation (“CBS”). We provide advertising space (“displays”) on out-of-home advertising structures and sites in the U.S., Canada and Latin America. Our portfolio includes billboard displays, which are predominantly located in densely populated major metropolitan areas and along high-traffic expressways and major commuting routes. We also have a number of exclusive multi-year contracts to operate advertising displays in municipal transit systems. We have displays in all of the 25 largest markets in the U.S. and over 180 markets across the U.S., Canada and Latin America. We manage our business through two segments - United States (“U.S.”) and International.	During 2013, CBS submitted a private letter ruling request with the Internal Revenue Service (“IRS”) to qualify the Company as a real estate investment trust (“REIT”). If the ruling is granted, the Company intends to elect the status of and qualify to be taxed as a REIT under the Internal Revenue Code of 1986 (the “Code”), after the Company’s separation from CBS. CBS has been advised by the IRS that the IRS has decided to study the current legal standards it uses to define “real estate” for purposes of the REIT provisions of the Code.
		CBS has advised the Company that it currently intends to dispose of all of the shares of Outfront Media Inc. common stock that it indirectly will own upon the completion of the Offering through a tax-free split-off (the “split-off”) pursuant to which CBS will offer its stockholders the option to exchange their shares of CBS common stock for shares of Outfront Media Inc. common stock in an exchange offer. If CBS does not proceed with the split-off, it could elect to dispose of Outfront Media Inc. common stock in a number of different types of transactions, including open market sales, sales to one or more third parties or pro rata distributions of Outfront Media Inc. shares to CBS’s stockholders or a combination of these transactions. All of these actions are subject to customary approvals, and there are no assurances that such transactions will be completed.
	On April 2, 2014, we completed an initial public offering (the “IPO”) of 23,000,000 shares of our common stock, including 3,000,000 shares of our common stock sold pursuant to the underwriters’ option to purchase additional shares. (See Note 2. Initial Public Offering.)	Basis of Presentation—The accompanying combined consolidated financial statements are presented on a “carve-out” basis from CBS’s consolidated financial statements based on the historical results of operations, cash flows, assets and liabilities attributable to its Outdoor Americas operating segment. CBS provides the Company with certain services, such as insurance and support for technology systems, and also provides benefits to the Company’s employees, including certain postemployment benefits, medical, dental, life and disability insurance and participation in a 401(k) savings plan. Charges for these services and benefits are reflected in the combined consolidated financial statements based on the specific identification of costs, assets and liabilities. These financial statements also include allocations of centralized corporate expenses from CBS for services, such as tax, internal audit, cash management and other services. These expenses were determined based on various allocation methods, including factors such as headcount, time and effort spent on matters relating to the Company, and the number of CBS operating entities benefiting from such services. In addition, the Company’s income tax provision and related tax accounts are presented as if these amounts were calculated on a separate tax return basis. Management believes that the assumptions and estimates used in preparation of the underlying combined consolidated financial statements are reasonable. However, the combined consolidated financial statements herein do not necessarily reflect what the Company’s financial position, results of operations or cash flows would have been if the Company had been a stand-alone company during the periods presented. As a result, historical financial information is not necessarily indicative of the Company’s future results of operations, financial position or cash flows.
	On April 16, 2014, CBS received a private letter ruling from the Internal Revenue Service (“IRS”) with respect to certain issues relevant to our ability to qualify as a real estate investment trust (“REIT”). On July 16, 2014, we ceased to be a member of the CBS consolidated tax group and on July 17, 2014, we began operating in a manner that will allow us to qualify as a REIT for U.S. federal income tax purposes for the tax year commencing July 17, 2014, and ending December 31, 2014.	We have revised the previously reported condensed consolidated Statement of Cash Flows for the years ended December 31, 2013, 2012 and 2011. Historically, non-cash purchases of property and equipment were previously included within capital expenditures. The revision increased Net cash used in investing activities and increased Net cash provided by operating activities by $2.7 million for the year ended December 31, 2013, and decreased Net cash used in investing activities and decreased Net cash provided by operating activities by $5.4 million, and $2.0 million for the years ended December 31, 2012 and 2011, respectively. We do not believe that these misclassifications were material to the previously reported interim or annual financial statements. The above adjustments had no effect on previously reported Statements of Operations, Statements of Financial Position or Statements of Invested Equity/Stockholders' Equity.
	On July 16, 2014, CBS completed a registered offer to exchange 97,000,000 shares of our common stock that were owned by CBS for outstanding shares of CBS Class B common stock (the “Exchange Offer”). In connection with the Exchange Offer, CBS disposed of all of its shares of our common stock and as of July 16, 2014, we were separated from CBS (the “Separation”) and were no longer a subsidiary of CBS.
	On October 1, 2014, we completed our acquisition of certain outdoor advertising businesses (the “Acquired Business”) from Van Wagner Communications, LLC, now known as OA VW LLC (“Van Wagner”), for $690.0 million in cash, plus working capital adjustments (the “Acquisition”). The Acquisition was funded with the net proceeds from the issuance and sale of the New Senior Notes (as defined in Note 18. Subsequent Events) and cash on hand. In nine months ended September 30, 2014, we recorded $7.6 million of commitment and other fees in Interest expense in the Consolidated Statement of Operations associated with a lender commitment to provide a senior unsecured bridge term loan facility for the purpose of financing the Acquisition in the event we did not complete the offering of the New Senior Notes.
	On October 20, 2014, we announced the re-branding of the Company to “OUTFRONT media.” Our common stock will begin trading on the New York Stock Exchange under the symbol “OUT,” and our legal name will change, effective November 20, 2014.
	On October 29, 2014, we announced that our board of directors approved a quarterly dividend of $0.37 per share. The dividend is payable on December 15, 2014, to stockholders of record of our common stock on November 18, 2014.
	On October 29, 2014, our board of directors approved a special dividend of approximately $547.7 million to our stockholders in connection with our conversion to a REIT. The special dividend is payable on December 31, 2014, to stockholders of record on November 20, 2014. The special dividend is the amount of our accumulated earnings and profits as of July 17, 2014, the date we began operating in a manner that will allow us to qualify as a REIT for U.S. federal income tax purposes (the “E&P Purge”). Stockholders will have the option to elect to receive their special dividend in all cash or all stock. However, the aggregate amount of cash to be distributed will be approximately $109.5 million. As stated in Note 2. Initial Public Offering, a portion ($100.0 million) of the IPO proceeds was retained by us and will be applied to the cash portion of the E&P Purge. CBS will transfer the balance of the cash portion of the E&P Purge (approximately $9.5 million) to us prior to the special dividend to stockholders.
	Basis of Presentation and Use of Estimates
	The accompanying unaudited consolidated financial statements have been prepared pursuant to the rules of the Securities and Exchange Commission (the “SEC”). In the opinion of our management, the accompanying unaudited financial statements reflect all adjustments, consisting of normal and recurring adjustments, necessary for a fair presentation of our financial position, results of operations and cash flows for the periods presented. Certain previously reported amounts have been reclassified to conform with the current presentation. These financial statements should be read in conjunction with the more detailed financial statements and notes thereto, included in our prospectus, filed with the SEC on July 7, 2014.
	We have revised the previously reported condensed consolidated Statement of Cash Flows for the nine months ended September 30, 2013. In prior periods, non-cash purchases of property and equipment were previously included within capital expenditures. The revision increased Net cash used in investing activities and increased Net cash provided by operating activities by $13.8 million for the nine months ended September 30, 2013. We do not believe that these misclassifications were material to the previously reported interim or annual financial statements. The above adjustments had no effect on previously reported Statements of Operations, Statements of Financial Position or Statements of Invested Equity/Stockholders' Equity. The impacted prior periods will be revised as they are presented in future filings.
	The preparation of our financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amount of revenues and expenses during the reporting period. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.
	Our 2013 financial statements were presented on a “carve-out” basis from CBS’s consolidated financial statements based on the historical results of operations, cash flows, assets and liabilities attributable to its Outdoor Americas operating segment. Management believes that the assumptions and estimates used in the preparation of the underlying consolidated financial statements are reasonable. However, the consolidated financial statements herein do not necessarily reflect what our financial position, results of operations or cash flows would have been if we had been a stand-alone company during the periods presented. As a result, such historical financial information is not necessarily indicative of our future results of operations, financial position or cash flows.

Summary_of_Significant_Account

Summary of Significant Accounting Policies (Notes)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Use of Estimates—The preparation of the Company’s combined consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates, judgments, and assumptions that affect the amounts reported in the combined consolidated financial statements and accompanying notes. The Company bases its estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates.
	Cash and Cash Equivalents—Cash and cash equivalents consist of cash on hand and short-term (maturities of three months or less at the date of purchase) highly liquid investments. Prior to the Formation Borrowings (See Note 14), the Company carried minimal cash on hand as it participated in CBS’s centralized cash management system. On January 31, 2014, at the time of the Formation Borrowings, such participation ceased.
	Receivables—Receivables consist primarily of trade receivables from customers, net of advertising agency commissions, and are stated net of an allowance for doubtful accounts. The provision for doubtful accounts is estimated based on historical bad debt experience, the aging of accounts receivable, industry trends and economic indicators, as well as recent payment history for specific customers.
	Property and Equipment—Property and equipment is stated at cost. Depreciation is computed using the straight-line method over the estimated useful lives as follows:
	Buildings and improvements	20 to 40 years
	Advertising structures	5 to 20 years
	Furniture, equipment and other	3 to 10 years
	For advertising structures associated with a contract, the assets are depreciated over the shorter of the contract term or useful life. Maintenance and repair costs to maintain property and equipment in their original operating condition are charged to expense as incurred. Improvements or additions that extend the useful life of the assets are capitalized. When an asset is retired or otherwise disposed of, the associated cost and accumulated depreciation are removed and the resulting gain or loss is recognized.
	Business Combinations and Asset Acquisitions—The Company routinely acquires out-of-home advertising assets, including advertising structures and permits and leasehold agreements. The Company determines the accounting for these transactions by first evaluating whether the assets acquired and liabilities assumed, if any, constitute a business using the guidelines in the Financial Accounting Standards Board (“FASB”) guidance for business combinations. If the assets acquired and liabilities assumed constitute a business, the purchase price is allocated to the tangible and identifiable intangible net assets acquired based on their estimated fair values with the excess of the purchase price over those estimated fair values recorded as goodwill. If the acquired assets do not constitute a business, the Company allocates the purchase price to the individual tangible and intangible assets acquired based on their relative fair values.
	Impairment of Long-Lived Assets—Long-lived assets are assessed for impairment whenever there is an indication that the carrying amount of the asset may not be recoverable. Recoverability of these assets is determined by comparing the forecasted undiscounted cash flows generated by those assets to the respective asset’s carrying value. The amount of impairment loss, if any, will be measured by the difference between the net carrying value and the estimated fair value of the asset and recognized as a noncash charge.
	Goodwill and Intangible Assets—Goodwill is allocated to various reporting units. Each of the Company’s segments consists of two reporting units. Intangible assets, which primarily consist of acquired permits and leasehold agreements and franchise agreements, are amortized by the straight-line method over their estimated useful lives, which range from five to 40 years. Goodwill is not amortized but is tested at the reporting-unit level annually for impairment and between annual tests if events occur or circumstances change that would more likely than not reduce the fair value below its carrying amount. If the carrying value of goodwill exceeds its fair value, an impairment loss is recognized as a noncash charge.
	Revenue Recognition—The Company’s revenues are primarily derived from providing space on advertising displays for local, regional and national advertisements. Contracts with customers generally cover periods ranging from four weeks to twelve months and are generally billed every four weeks. Revenues from billboard displays are recognized as rental income on a straight-line basis over the contract term. Transit and other revenues are recognized as earned, which is typically ratably over the contract period. For space provided to advertisers through the use of an advertising agency whose commission is calculated based on a stated percentage of gross billing revenues, revenues are reported net of agency commissions.
	Deferred revenues primarily consist of revenues paid in advance of being earned.
	Revenues derived from a single contract that contains multiple site locations are allocated based on the relative fair value of each delivered item and recognized in accordance with the applicable revenue recognition criteria for the specific unit of accounting.
	Concentration of Credit Risk—In the opinion of management, credit risk is limited due to the large number of customers and advertising agencies utilized. The Company performs credit evaluations on its customers and agencies and believes that the allowances for doubtful accounts are adequate.
	Billboard Property Lease and Transit Franchise Expenses—The Company’s billboards are primarily located on leased real property. Lease agreements are negotiated for varying terms ranging from one month to multiple years, most of which provide renewal options. Lease costs consist of a fixed monthly amount and certain lease agreements also include contingent rent based on the revenues the Company generates from the leased site. Property leases are generally paid in advance for periods ranging from one to twelve months. The fixed component of lease costs is expensed evenly over the contract term, and contingent rent is expensed as it becomes probable, which is consistent with when the related revenues are recognized.
	Transit franchise agreements generally provide for payment to the municipality or transit operator of the greater of a percentage of the revenues that the Company generates under the related transit contract and a specified guaranteed minimum payment. The costs which are determined based on a percentage of revenues are expensed as incurred when the related revenues are recognized, and the minimum guarantee is expensed over the contract term.
	Direct Lease Acquisition Costs—Variable commissions directly associated with billboard revenues are amortized on a straight-line basis over the related customer lease term, which generally ranges from four weeks to one year. Amortization of direct lease acquisition costs is presented within amortization expense in the accompanying Combined Consolidated Statements of Operations.
	Foreign Currency Translation and Transactions—The assets and liabilities of foreign subsidiaries are translated at exchange rates in effect at the balance sheet date, while results of operations are translated at average exchange rates for the respective periods. The resulting translation gains and losses are included as a component of invested equity in accumulated other comprehensive loss. Foreign currency transaction gains and losses are included in “Other income (expense), net” in the Combined Consolidated Statements of Operations.
	Income Taxes—Income taxes are accounted for under the asset and liability method of accounting. Deferred income tax assets and liabilities are recognized for the estimated future tax effects of temporary differences between the financial statement carrying amounts and their respective tax basis. Deferred tax assets are reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax assets will not be realized. The Company’s effective tax rate represents federal, state, local and foreign taxes, each calculated separately based on each jurisdiction’s earnings before income taxes and equity in earnings of investee companies.
	The Company’s income taxes as presented herein, including the provision for income taxes, deferred tax assets and liabilities, and income tax payments are calculated on a separate tax return basis, even though the Company’s U.S. operating results are included in the consolidated federal, and certain state and local income tax returns of CBS. CBS manages its tax position for the benefit of the entire portfolio of its businesses and, as such, the assumptions, methodologies and calculations made for purposes of determining the Company’s tax provision, taxes paid and related tax accounts in the combined consolidated financial statements herein may differ from those made by CBS and, in addition, are not necessarily reflective of the tax strategies that the Company would have followed as a separate stand-alone company.
	Asset Retirement Obligation—An asset retirement obligation is established for the estimated future obligation, upon termination or nonrenewal of a lease, associated with removing structures from the leased property and, when required by the contract, the cost to return the leased property to its original condition. These obligations are recorded at their present value in the period in which the liability is incurred and are capitalized as part of the related assets’ carrying value. Accretion of the liability is recognized in operating expenses and the capitalized cost is depreciated over the expected useful life of the related asset.
	Stock-based Compensation—CBS issued stock options and restricted stock units (“RSUs”) for CBS Class B Common Stock to certain employees of the Company under its equity incentive plans. CBS measures the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award. The cost is recognized over the vesting period during which an employee is required to provide service in exchange for the award.
	Subsequent Events—The Company performed an evaluation of subsequent events through February 18, 2014, which is the date the financial statements were available to be issued.
	Adoption of New Accounting Standards
	Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income
	During 2013, the Company adopted the FASB guidance that requires disclosure of significant amounts reclassified out of accumulated other comprehensive income by component and their corresponding effect on the respective line items of net income (See Note 8).
	Fair Value Measurements
	During 2012, the Company adopted the FASB amended guidance which clarifies the FASB’s intent about the application of existing fair value measurement requirements and changes in certain principles and requirements for measuring fair value and for disclosing information about fair value measurements. The adoption of this guidance did not have a material effect on the Company’s combined consolidated financial statements.
	Recent Pronouncements
	Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists
	In July 2013, the FASB issued guidance on the presentation of the reserve for uncertain tax positions when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This guidance requires the reserve for uncertain tax positions to be presented in the financial statements as a reduction to the deferred tax asset for a tax loss or other tax carryforward that would be applied in the settlement of the uncertain tax position. This guidance, which is effective for interim and annual reporting periods beginning after December 15, 2013, will not have a material effect on the Company’s combined consolidated financial statements.
	Obligations Resulting from Joint and Several Liability Arrangements
	In February 2013, the FASB issued guidance on the recognition, measurement and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. Under this guidance, the Company is required to measure its obligations under such arrangements as the sum of the amount it agreed to pay in the arrangement among its co-obligors and any additional amount the Company expects to pay on behalf of its co-obligors. The Company is also required to disclose the nature and amount of the obligation. This guidance, which is effective for interim and annual reporting periods beginning after December 15, 2013, will not have a material effect on the Company’s combined consolidated financial statements.

Initial_Public_Offering

Initial Public Offering	9 Months Ended
	Sep. 30, 2014
Initial Public Offering [Abstract]
Initial Public Offering	Initial Public Offering
	On March 27, 2014, our registration statement on Form S-11 related to our IPO of our common stock was declared effective by the SEC and on March 28, 2014, our common stock began trading on the New York Stock Exchange under the symbol “CBSO.” On April 2, 2014, we completed an IPO of 23,000,000 shares of our common stock, including 3,000,000 shares of our common stock sold pursuant to the underwriters’ option to purchase additional shares, at a price of $28.00 per share for total net proceeds, after underwriting discounts and commissions, of $615.0 million. Of the total net proceeds, $515.0 million was transferred to a wholly owned subsidiary of CBS as partial consideration for the contribution of the entities comprising CBS’s Outdoor Americas operating segment to us. The remaining $100.0 million was retained by us and will be applied to the cash portion of the E&P Purge to our stockholders.

New_Accounting_Standards

New Accounting Standards	9 Months Ended
	Sep. 30, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Standards	New Accounting Standards
	Adoption of New Accounting Standards
	Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists
	During the nine months ended September 30, 2014, we adopted the Financial Accounting Standards Board’s (the “FASB’s”) guidance on the presentation of the reserve for uncertain tax positions when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. This guidance requires the reserve for uncertain tax positions to be presented in the financial statements as a reduction to the deferred tax asset for a tax loss or other tax carryforward that would be applied in the settlement of the uncertain tax position. This guidance did not have a material effect on our consolidated financial statements.
	Obligations Resulting from Joint and Several Liability Arrangements
	During the nine months ended September 30, 2014, we adopted FASB guidance on the recognition, measurement and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. Under this guidance, we are required to measure our obligations under such arrangements as the sum of the amount we agreed to pay in the arrangement among our co-obligors and any additional amount we expect to pay on behalf of our co-obligors. We are also required to disclose the nature and amount of the obligation. This guidance did not have a material effect on our consolidated financial statements.
	Recent Pronouncements
	Service Concession Arrangements
	In January 2014, the FASB issued guidance on the accounting for service concession arrangements with public sector entities. This guidance specifies that an operating entity should not account for a service concession arrangement as a lease and the infrastructure used in a service concession arrangement should not be recognized as property, plant and equipment. This guidance applies when the public sector entity controls the services that the operating entity must provide within the infrastructure and also controls any residual interest in the infrastructure at the end of the term of the arrangement. We are currently evaluating the impact of this guidance, which is effective for reporting periods beginning after December 15, 2014, on our consolidated financial statements.
	Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity
	In April 2014, the FASB issued guidance on reporting discontinued operations and disclosures of disposals of components of an entity. The new guidance changes the requirements, including additional disclosures, for reporting discontinued operations which may include a component of an entity or a group of components of an entity, or a business or nonprofit activity. Under the new guidance, a discontinued operation is defined as a disposal of a component or group of components that is disposed of or is classified as held for sale and represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. This guidance is effective for interim periods and annual periods beginning after December 31, 2014. Early adoption is permitted, but only for disposals that have not been reported in financial statements previously issued or available for issuance. This guidance is not expected to have a material effect on our consolidated financial statements.
	Revenue from Contracts with Customers
	In May 2014, the FASB issued principles-based guidance addressing revenue recognition issues. The guidance may be applied to all contracts with customers regardless of industry-specific or transaction specific fact patterns. This guidance is to be applied retrospectively and is effective for interim and annual periods beginning after December 15, 2016. Early adoption is not permitted. We are currently evaluating the impact of this guidance on our consolidated financial statements.

Property_and_Equipment

Property and Equipment	9 Months Ended						12 Months Ended
	Sep. 30, 2014						Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment						3) PROPERTY AND EQUIPMENT
							The table below presents the balances of major classes of assets and accumulated depreciation.
	The table below presents the balances of major classes of assets and accumulated depreciation.
							At December 31,	2013		2012
			As of
	(in millions)	Estimated Useful Lives	September 30,		December 31,		Land	$	88.6	$	87.8
			2014		2013
	Land		$	88.4	$	88.6	Buildings and improvements	45		45.7
	Building and improvements	20 to 40 years	47.5		45		Advertising structures	1,662.30		1,655.90
	Advertising structures	5 to 20 years	1,662.40		1,662.30		Furniture, equipment and other	77.2		76.3
	Furniture, equipment and other	3 to 10 years	76.1		77.2		Construction in progress	18.9		13.5
	Construction in progress		15.7		18.9			1,892.00		1,879.20
			1,890.10		1,892.00		Less accumulated depreciation	1,136.60		1,071.30
	Less: accumulated depreciation		1,185.70		1,136.60		Property and equipment, net	$	755.4	$	807.9
	Property and equipment, net		$	704.4	$	755.4	Depreciation expense was $104.5 million, $105.9 million and $109.0 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	Depreciation expense was $79.3 million for the nine months ended September 30, 2014, and $78.3 million for the nine months ended September 30, 2013.

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets (Notes)	9 Months Ended								12 Months Ended
	Sep. 30, 2014								Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and other intangible assets	Intangible Assets								GOODWILL AND OTHER INTANGIBLE ASSETS
									For the years ended December 31, 2013 and 2012, the changes in the book value of goodwill by segment were as follows:
	Our identifiable intangible assets primarily consist of acquired permits and leasehold agreements and franchise agreements which grant us the right to operate out-of-home structures in specified locations and the right to provide advertising space on railroad and municipal transit properties. Identifiable intangible assets are amortized on a straight-line basis over their estimated useful life, which is the respective life of the agreement that in some cases includes historical experience of renewals.
	Our identifiable intangible assets consist of the following:									United States			International			Total
									At December 31, 2011	$	1,758.00		$	114.3		$	1,872.30
	(in millions)	Gross		Accumulated Amortization			Net		Currency translation adjustments	—			4.9			4.9
	As of September 30, 2014:
	Permits and leasehold agreements	$	876	$	(681.0	)	$	195	At December 31, 2012	1,758.00			119.2			1,877.20
	Franchise agreements	442.1		(317.9		)	124.2		Currency translation adjustments	—			(5.1		)	(5.1		)
	Other intangible assets	2.1		(1.2		)	0.9		Dispositions	(6.4		)	—			(6.4		)
	Total intangible assets	$	1,320.20	$	(1,000.1	)	$	320.1	At December 31, 2013	$	1,751.60		$	114.1		$	1,865.70
									The balance in the Company’s United States segment is net of accumulated impairments of $7.19 billion at December 31, 2013 and $7.22 billion at both December 31, 2012 and 2011, which were incurred prior to 2009.
	As of December 31, 2013:								The balance in the Company’s International segment is net of accumulated impairments of $489.2 million at December 31, 2013, 2012 and 2011, which were incurred prior to 2009.
	Permits and leasehold agreements	$	880.6	$	(659.0	)	$	221.6	The Company’s identifiable intangible assets primarily consist of acquired permits and leasehold agreements and franchise agreements which grant the Company the right to operate out-of-home structures in specified locations and the right to provide advertising space on railroad and municipal transit properties. Identifiable intangible assets are amortized on a straight-line basis over their estimated useful life, which is the respective life of the agreement that in some cases includes historical experience of renewals.
									The Company’s identifiable intangible assets consist of the following:
	Franchise agreements	462.4		(320.7		)	141.7
	Other intangible assets	2.1		(1.0		)	1.1		At December 31, 2013	Gross			Accumulated			Net
													Amortization
	Total intangible assets	$	1,345.10	$	(980.7	)	$	364.4	Permits and leasehold agreements	$	880.6		$	(659.0	)	$	221.6
									Franchise agreements	462.4			(320.7		)	141.7
	All of our intangible assets, except goodwill, are subject to amortization. Amortization expense was $67.3 million for the nine months ended September 30, 2014, and $68.2 million for the nine months ended September 30, 2013, which includes the amortization of direct lease acquisition costs of $24.2 million for the nine months ended September 30, 2014, and $22.7 million for the nine months ended September 30, 2013. Direct lease acquisition costs are amortized on a straight-line basis over the related customer lease term, which generally ranges from four weeks to one year.
									Other intangible assets	2.1			(1.0		)	1.1
									Total intangible assets	$	1,345.10		$	(980.7	)	$	364.4
									At December 31, 2012	Gross			Accumulated			Net
													Amortization
									Permits and leasehold agreements	$	875.7		$	(625.5	)	$	250.2
									Franchise agreements	476.9			(309.0		)	167.9
									Other intangible assets	15.7			(13.8		)	1.9
									Total intangible assets	$	1,368.30		$	(948.3	)	$	420
									All of the Company’s intangible assets, except goodwill, are subject to amortization. Amortization expense was $91.3 million, $90.9 million and $102.9 million for the years ended December 31, 2013, 2012 and 2011, respectively, which includes the amortization of direct lease acquisition costs of $30.9 million, $31.1 million and $32.1 million for the years ended December 31, 2013, 2012 and 2011, respectively. Direct lease acquisition costs are amortized on a straight-line basis over the related customer lease term, which generally ranges from four weeks to one year.
									The Company expects its aggregate annual amortization expense for intangible assets, before considering the impact of future direct lease acquisition costs, for each of the years 2014 through 2018, to be as follows:
										2014			2015			2016			2017		2018
									Amortization expense	$	57.1		$	55.2		$	50.1		$	27.9	$	21

Asset_Retirement_Obligation

Asset Retirement Obligation	9 Months Ended				12 Months Ended
	Sep. 30, 2014				Dec. 31, 2013
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	Asset Retirement Obligation				ASSET RETIREMENT OBLIGATION
					The following table sets forth the change in the asset retirement obligations associated with the Company’s advertising structures located on leased properties. The obligation is calculated based on the assumption that all of the Company’s advertising structures will be removed within the next 50 years. The estimated annual costs to dismantle and remove the structures upon the termination or nonrenewal of its leases are consistent with the Company’s historical experience. During the last several years, the Company has primarily invested in upgrading certain of its existing structures to digital formats and therefore has not had significant additions to its portfolio of properties.
	The following table sets forth the change in the asset retirement obligations associated with our advertising structures located on leased properties. The obligation is calculated based on the assumption that all of our advertising structures will be removed within the next 50 years. The estimated annual costs to dismantle and remove the structures upon the termination or non-renewal of our leases are consistent with our historical experience.
					At December 31, 2011	$	29.3
	(in millions)
	As of December 31, 2013	$	31.7		Accretion expense	1.8
	Accretion expense	1.7			Liabilities settled	(1.0		)
					Foreign currency translation adjustments	0.5
	Additions	0.2
					At December 31, 2012	30.6
	Liabilities settled	(0.8		)
	Foreign currency translation adjustments	(0.5		)	Accretion expense	2.2
	As of September 30, 2014	$	32.3
					Liabilities settled	(0.9		)
					Foreign currency translation adjustments	(0.2		)
					At December 31, 2013	$	31.7

Related_Party_Transactions

Related Party Transactions	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions	RELATED PARTY TRANSACTIONS
		CBS Corporation.  The Company is indirectly wholly owned by CBS. CBS provides the Company with certain services, such as insurance and support for technology systems, and also provides benefits to the Company’s employees, including certain postemployment benefits, medical, dental, life and disability insurance and participation in a 401(k) savings plan. Charges for these services and benefits are reflected in the combined consolidated financial statements based on the specific identification of costs, assets and liabilities. These financial statements also include allocations of centralized corporate expenses from CBS for services, such as tax, internal audit, cash management and other services. These expenses were determined based on various allocation methods, including factors such as headcount, time and effort spent on matters relating to the Company, and the number of CBS operating entities benefiting from such services. Charges for these services and benefits have been included in selling, general and administrative expenses in the accompanying Combined Consolidated Statements of Operations and totaled $60.9 million, $47.7 million and $46.2 million for the years ended December 31, 2013, 2012 and 2011, respectively. For 2013, these charges also included professional fees associated with matters related to the Company’s election and qualification to be taxed as a REIT and costs related to the Company’s preparation to operate as a stand-alone public company. Management believes that the assumptions and estimates used to allocate these expenses are reasonable. However, the Company’s expenses as a stand-alone company may be different from those reflected in the Combined Consolidated Statements of Operations.
	CBS Corporation	Prior to the Formation Borrowings in January 2014, the Company participated in CBS’s centralized cash management system. Under this system, on a daily basis, any excess cash the Company generated was automatically transferred to CBS and any additional daily cash flow needs were funded by CBS. In conjunction therewith, the intercompany transactions between the Company and CBS have been considered to be effectively settled in cash in these financial statements. The net effect of the settlement of these intercompany transactions, in addition to cash transfers to and from CBS, are reflected in “Net cash distribution to CBS” on the Combined Consolidated Statements of Cash Flows and “Net distribution to CBS” on the Combined Consolidated Statements of Invested Equity. The amounts on these financial statement line items differ due to noncash transactions, such as stock-based compensation expense. On January 31, 2014, at the time of the Formation Borrowings, (See Note 14) the Company’s participation in CBS’s centralized cash management system ceased.
		CBS manages its long-term debt obligations based on the needs of its entire portfolio of businesses. Long-term debt of CBS and related interest expense are not allocated to the Company as none of CBS’s debt is directly attributable to the Company.
	Our financial statements as of and for the nine months ended September 30, 2014, include charges from CBS for services, such as tax, internal audit, cash management, insurance, technology systems and other services. In addition, prior to 2014, CBS provided benefits to our employees, including certain post-employment benefits, medical, dental, life and disability insurance and participation in a 401(k) savings plan. Charges for these services and benefits are reflected in the consolidated financial statements based on the specific identification of costs, assets and liabilities or based on various allocation methods, including factors such as headcount, time and effort spent on matters relating to us, and the number of CBS operating entities benefiting from such services. Charges for these services and benefits have been included in Selling, general and administrative expenses in the accompanying Consolidated Statements of Operations and totaled $9.5 million in the nine months ended September 30, 2014, and $48.7 million in the same prior-year period. Also included in these charges are professional fees associated with our planned election to be taxed as a REIT. Our expenses as a stand-alone company may be different from those reflected in the Consolidated Statements of Operations prior to the IPO. Effective January 1, 2014, our employees began participating in employee benefit plans maintained by us. As a result, there were no benefits provided by CBS in the nine months ended September 30, 2014. In addition, during 2014, certain other services previously provided by CBS have been transitioned to us.	For advertising spending placed by CBS and its subsidiaries, the Company recognized total revenues of $14.9 million, $16.6 million and $20.1 million for the years ended December 31, 2013, 2012 and 2011, respectively.
		Other Related Parties.  The Company has a 50% ownership interest in two joint ventures that operate transit shelters in Los Angeles and Vancouver. These ventures are accounted for as equity investments. At December 31, 2013 and 2012, these investments totaled $24.1 million and $11.3 million, respectively, and are included in “Other assets” on the Combined Consolidated Balance Sheets. The Company provides management services to these joint ventures. Management fees earned from these joint ventures were immaterial for all periods presented.
	As of September 30, 2014, receivables from CBS were $0.3 million and payables to CBS were $1.0 million, which were included in Other current assets and Other current liabilities, respectively, on our Consolidated Statement of Financial Position. As of December 31, 2013, there were no receivables or payables from CBS on our Consolidated Statement of Financial Position.	In 2013, the Company sold 50% of its transit shelter operations in Los Angeles for $17.5 million. The Company and the buyer each subsequently contributed their respective 50% interests in these operations to a 50/50 joint venture that the Company and buyer own together. This transaction resulted in a gain of $17.5 million in 2013.
		Viacom Inc. is controlled by National Amusements, Inc., the controlling stockholder of CBS. Revenues recognized for advertising spending placed by various subsidiaries of Viacom Inc. were $9.3 million, $9.4 million and $11.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	On April 2, 2014, we entered into a transition services agreement with CBS, pursuant to which CBS will temporarily provide us with certain services (including legal, finance, information technology, insurance, tax and employment functions), and we will provide certain limited services to CBS. Also on April 2, 2014, we entered into a license agreement with a wholly owned subsidiary of CBS, pursuant to which we have the right to use “CBS” in the corporate names of the Company and our subsidiaries and have the right to use the “CBS” mark and logo on our advertising billboards. On July 16, 2014, we amended the transition services agreement to extend the time periods in which CBS will provide the transition services described above to January 16, 2015 or to July 16, 2015, as applicable depending on the services being provided. Also on July 16, 2014, we amended the license agreement to extend the time period in which we have the right to use “CBS” in the corporate names of the Company and our subsidiaries to December 31, 2014, and have the right to use the “CBS” mark and logo on our advertising displays to March 31, 2016. On October 20, 2014, we announced the re-branding of the Company to “OUTFRONT media.” Our common stock will begin trading on the New York Stock Exchange under the symbol “OUT,” and our legal name will change, effective November 20, 2014.
	Prior to the incurrence of indebtedness on January 31, 2014, intercompany transactions between CBS and us were considered to be effectively settled in cash in the financial statements. The net effect of the settlement of these intercompany transactions, in addition to cash transfers to and from CBS, are reflected in Net cash contribution from (distribution to) CBS on the Condensed Consolidated Statements of Cash Flows and Net contribution from (distribution to) CBS on the Consolidated Statements of Invested Equity/Stockholders’ Equity. The amounts on these financial statement line items differ due to non-cash transactions, such as stock-based compensation expense.
	For advertising spending placed by CBS and its subsidiaries, we recognized total revenues of $14.5 million, of which $7.7 million was before the Separation, for the nine months ended September 30, 2014, and $12.3 million for the same prior-year period.
	On July 16, 2014, CBS completed the Separation and as a result of this transaction, CBS and their affiliates ceased to be related parties.
	Other Related Parties
	Viacom Inc. is controlled by National Amusements, Inc., the controlling stockholder of CBS. On July 16, 2014, CBS completed the Separation and as a result of this transaction, Viacom Inc. ceased to be a related party. Revenues recognized for advertising spending placed by various subsidiaries of Viacom Inc. were $6.0 million, of which $4.3 million was before the Separation, for the nine months ended September 30, 2014, and $5.6 million for the same prior-year period.
	We have a 50% ownership interest in two joint ventures that operate transit shelters in Los Angeles and Vancouver. These ventures are accounted for as equity investments. These investments totaled $22.6 million as of September 30, 2014, and $24.1 million as of December 31, 2013, and are included in Other assets on the Consolidated Statements of Financial Position. We provide sales and management services to these joint ventures.

LongTerm_Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt
	Long-term debt consists of the following:
		As of
	(in millions, except percentages)	September 30,			December 31,
		2014			2013
	Term loan, due 2021	$	798.2		$	—
	Senior unsecured notes:
	5.250% senior unsecured notes, due 2022	400			—
	5.625% senior unsecured notes, due 2024	400			—
	Total senior unsecured notes	800			—
	Total long-term debt	$	1,598.20		$	—
	Weighted average cost of debt	4.2		%	—		%
	Term Loan
	On January 31, 2014, two of our wholly owned subsidiaries, Outfront Media Capital LLC (“Capital LLC”) and Outfront Media Capital Corporation (“Finance Corp,” and together with Capital LLC, the “Borrowers”), borrowed $800.0 million under a term loan due in 2021 (the “Term Loan,” together with the Revolving Credit Facility (as defined below), the “Senior Credit Facilities”). The Senior Credit Facilities are governed by a credit agreement, dated as of January 31, 2014 (the “Credit Agreement”). The Term Loan is unconditionally guaranteed by us and our material existing and future direct and indirect wholly owned domestic subsidiaries (except the Borrowers), subject to certain exceptions. The Term Loan is secured, subject to certain exceptions, by substantially all of the assets of the Borrowers and the guarantors, including a first-priority pledge of all the capital stock of our subsidiaries directly held by the Borrowers and the guarantors under the Term Loan.
	The Term Loan bears interest at a rate per annum equal to 2.25% plus the greater of the London Interbank Offered Rate (“LIBOR”) or 0.75%. The interest rate on the Term Loan was 3.00% per annum as of September 30, 2014. Interest on the term loan is payable at the end of each LIBOR period, but in no event less frequently than quarterly. The Term Loan was issued at a discount which we are amortizing through Interest expense on the Consolidated Statement of Operations over the life of the Term Loan. As of September 30, 2014, $1.8 million remains unamortized.
	Senior Unsecured Notes
	On January 31, 2014, the Borrowers issued $400.0 million aggregate principal amount of 5.250% Senior Unsecured Notes due 2022 and $400.0 million aggregate principal amount of 5.625% Senior Unsecured Notes due 2024 (together, the “Senior Notes”) in a private placement. The Senior Notes are fully and unconditionally guaranteed on a senior unsecured basis by the Company and each of its direct and indirect wholly owned domestic subsidiaries that guarantee the Senior Credit Facilities. Interest on the Senior Notes is payable on May 15 and November 15 of each year.
	On or after February 15, 2017, the Borrowers may redeem at any time, or from time to time, some or all of the 5.250% Senior Unsecured Notes due 2022, and on or after February 15, 2019, the Borrowers may also redeem at any time, or from time to time, some or all of the 5.625% Senior Unsecured Notes due 2024. Prior to such dates, the Borrowers may redeem some or all of the Senior Notes subject to a customary make-whole premium. In addition, prior to February 15, 2017, the Borrowers may redeem up to 35% of the aggregate principal amount of each series of Senior Notes with the proceeds of certain equity offerings.
	Pursuant to a registration rights agreement dated January 31, 2014, we and the Borrowers have agreed to use commercially reasonable efforts to cause a registration statement to become effective with the SEC by January 31, 2015, related to an offer to exchange the Senior Notes for registered Senior Notes having substantially identical terms, or, in certain cases, to register the Senior Notes for resale. If we and the Borrowers do not register or exchange the Senior Notes pursuant to the terms of the registration rights agreement, the Borrowers will be required to pay additional interest to the holders of the Senior Notes under certain circumstances.
	Revolving Credit Facility
	On January 31, 2014, the Borrowers also entered into a $425.0 million Revolving Credit Facility, which matures in 2019 (the “Revolving Credit Facility”). Borrowing rates under the Revolving Credit Facility are based on LIBOR plus a margin based on our Consolidated Net Secured Leverage Ratio, which is the ratio of (i) our consolidated secured debt (less up to $150.0 million of unrestricted cash) to (ii) our Consolidated EBITDA (as defined in the Credit Agreement) for the trailing four consecutive quarters. Interest on the Revolving Credit Facility is payable at the end of each LIBOR period, but in no event less frequently than quarterly. The commitment fee based on the amount of unused commitments under the Revolving Credit Facility in the nine months ended September 30, 2014, was $1.4 million. As of September 30, 2014, there were no outstanding borrowings under the Revolving Credit Facility. As of September 30, 2014, we had issued letters of credit totaling approximately $20.5 million against the Revolving Credit Facility. The Revolving Credit Facility is unconditionally guaranteed by us and our material existing and future direct and indirect wholly owned domestic subsidiaries (except the Borrowers), subject to certain exceptions. The Revolving Credit Facility is secured, subject to certain exceptions, by substantially all of the assets of the Borrowers and the guarantors, including a first-priority pledge of all the capital stock of our subsidiaries directly held by the Borrowers and the guarantors under the Revolving Credit Facility.
	The Credit Agreement contains certain customary affirmative and negative covenants. As of September 30, 2014, the terms of the Revolving Credit Facility require that as an entity being taxed as a REIT, we are required to maintain a Maximum Consolidated Net Secured Leverage Ratio of no greater than 4.0 to 1.0. As of September 30, 2014, our Maximum Consolidated Net Secured Leverage Ratio was 1.6 to 1.0. The Credit Agreement requires, in connection with the incurrence of certain indebtedness, that we maintain a Consolidated Total Leverage Ratio, which is the ratio of our consolidated total debt to our Consolidated EBITDA for the trailing four consecutive quarters, of no greater than 6.0 to 1.0. As of September 30, 2014, our Consolidated Total Leverage Ratio was 3.9 to 1.0.
	Letter of Credit Facility
	On January 31, 2014, the Borrowers also entered into a letter of credit facility, pursuant to which we may obtain letters of credit from time to time in an aggregate outstanding face amount of up to $80.0 million. After the first year, the letter of credit facility will automatically extend for successive one-year periods unless either the Borrowers or the issuing bank under it elect not to extend it. The letter of credit facility is unconditionally guaranteed by us and our material existing and future direct and indirect wholly owned domestic subsidiaries (except the Borrowers), subject to certain exceptions, and is secured on an equal and ratable basis by the same collateral that secures the Senior Credit Facilities. The fee under the letter of credit facility in the nine months ended September 30, 2014, was immaterial. On October 1, 2014, we issued letters of credit totaling approximately $10.2 million related to operations of the Acquired Business against the letter of credit facility.
	Deferred Financing Costs
	We deferred $29.3 million in fees and expenses associated with the Senior Credit Facilities, Senior Notes and letter of credit facility. We are amortizing the deferred fees through Interest expense on the Consolidated Statement of Operations over the term of each debt facility.
	Use of Proceeds
	On January 31, 2014, we transferred approximately $1.5 billion of the combined proceeds from the Term Loan and the Senior Notes to a wholly owned subsidiary of CBS, which is an amount equal to the net proceeds from the total indebtedness less $50.0 million, which remained with us for general corporate purposes.
	Fair Value
	Under the fair value hierarchy, observable inputs such as unadjusted quoted prices in active markets for identical assets or liabilities are defined as Level 1; observable inputs other than quoted prices included within Level 1 that are either directly or indirectly observable for the asset or liability are defined as Level 2; and unobservable inputs for the asset or liability are defined as Level 3. The aggregate fair value of our debt, which is estimated based on quoted market prices of similar liabilities, was approximately $1.6 billion as of September 30, 2014. The fair value of our debt is classified as Level 2.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	9 Months Ended										12 Months Ended
	Sep. 30, 2014										Dec. 31, 2013
Accumulated Other Comprehensive Income [Abstract]
Accumulated Comprehensive Income	Accumulated Other Comprehensive Income										ACCUMULATED OTHER COMPREHENSIVE INCOME
											The following table presents the changes in the components of accumulated other comprehensive income (loss).
	(in millions)	Cumulative Translation Adjustments			Net Actuarial Gain (Loss)			Accumulated Other Comprehensive Income (Loss)
	As of December 31, 2013	$	(69.2	)	$	(5.9	)	$	(75.1	)		Cumulative			Net			Accumulated
	Other comprehensive income before reclassifications	(3.1		)	—			(3.1		)		Translation			Actuarial			Other
												Adjustments			Gain			Comprehensive
	Amortization of actuarial losses reclassified to net income	—			0.2			0.2							(Loss)			Income (Loss)
											At December 31, 2010	$	(51.0	)	$	(7.1	)	$	(58.1	)
	Deferred tax rate adjustment	—			(1.2		)	(1.2		)	Other comprehensive loss	(14.3		)	(3.2		)	(17.5		)
											At December 31, 2011	(65.3		)	(10.3		)	(75.6		)
	Total other comprehensive income, net of tax	(3.1		)	(1.0		)	(4.1		)	Other comprehensive income (loss)	11			(1.4		)	9.6
	As of September 30, 2014	$	(72.3	)	$	(6.9	)	$	(79.2	)
											At December 31, 2012	(54.3		)	(11.7		)	(66.0		)
	As of December 31, 2012	$	(54.3	)	$	(11.7	)	$	(66.0	)	Other comprehensive income (loss) before reclassifications	(14.9		)	5.2			(9.7		)
	Other comprehensive income before reclassifications	(12.3		)	—			(12.3		)
											Amortization of actuarial losses reclassified to net income (a)	—			0.6			0.6
	Amortization of actuarial losses reclassified to net income	—			0.4			0.4
											Other comprehensive income (loss)	(14.9		)	5.8			(9.1		)
	Total other comprehensive income (loss), net of tax	(12.3		)	0.4			(11.9		)
											At December 31, 2013	$	(69.2	)	$	(5.9	)	$	(75.1	)
	As of September 30, 2013	$	(66.6	)	$	(11.3	)	$	(77.9	)
											(a)	See Note 11 for additional details of items reclassified from accumulated other comprehensive income to net income.
											Net actuarial gain (loss) included in other comprehensive income (loss) is net of a tax expense of $3.3 million for the year ended December 31, 2013, and net of a tax benefit of $.3 million and $2.9 million for the years ended December 31, 2012 and 2011, respectively.

Equity

Equity	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]
Equity	Equity
	On January 15, 2014, 100 shares of our common stock were issued to CBS. On March 14, 2014, our board of directors declared a 970,000 to 1 stock split. As a result of the stock split, the 100 shares of our common stock then outstanding were converted into 97,000,000 shares of our common stock. The effects of the stock split have been applied retroactively. For purposes of calculating earnings per share, 97,000,000 shares were considered outstanding for all periods presented.
	On March 25, 2014, our board of directors granted CBS and certain of its affiliates a waiver of the ownership restrictions contained in our charter, subject to certain initial and ongoing conditions designed to protect our status as a REIT.
	On March 27, 2014, our registration statement on Form S-11 related to our IPO of our common stock was declared effective by the SEC. On April 2, 2014, we completed an IPO of 23,000,000 shares of our common stock, including 3,000,000 shares of our common stock sold pursuant to the underwriters’ option to purchase additional shares, at a price of $28.00 per share. Our total shares issued and outstanding upon completion of the IPO was 120,000,000. (See Note 2. Initial Public Offering.)
	As of September 30, 2014, 450,000,000 shares of our common stock, par value $0.01 per share, were authorized; 120,010,462 shares were issued and outstanding; and 50,000,000 shares of our preferred stock, par value $0.01 per share, were authorized with no shares issued and outstanding.
	On October 29, 2014, our board of directors approved a special dividend of approximately $547.7 million to our stockholders in connection with our conversion to a REIT. The special dividend is payable on December 31, 2014, to stockholders of record as of November 20, 2014. The special dividend is the E&P Purge. Stockholders will have the option to elect to receive their special dividend in all cash or all stock. However, the aggregate amount of cash to be distributed will be approximately $109.5 million. As stated in Note 2. Initial Public Offering, a portion ($100.0 million) of the IPO proceeds was retained by us and will be applied to the cash portion of the E&P Purge. CBS will transfer the balance of the cash portion of the E&P Purge (approximately $9.5 million) to us prior to the special dividend to stockholders.

Restructuring_Charges

Restructuring Charges	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Restructuring Charges [Abstract]
Restructuring Charges	Restructuring Charges	RESTRUCTURING CHARGES
		During 2012 and 2011, in efforts to reduce its cost structure, the Company recorded restructuring charges of $2.5 million and $3.0 million, respectively, mainly in the United States segment. The charges principally reflected severance costs associated with the elimination of positions. At December 31, 2013, all of the restructuring reserves were fully utilized and at December 31, 2012, $1.1 million of the restructuring reserves were remaining.
	In the third quarter of 2014, we recorded a restructuring charge of $6.2 million associated with a management reorganization resulting in the departure of Wally Kelly, President and Chief Operating Officer, from the Company. The restructuring charge is comprised of severance charges, including stock-based compensation of $3.5 million. As of September 30, 2014, a restructuring reserve of $2.5 million is included in Other current liabilities in the Consolidating Statement of Financial Position.

StockBased_Compensation

Stock-Based Compensation	9 Months Ended															12 Months Ended
	Sep. 30, 2014															Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation															STOCK-BASED COMPENSATION
																Certain of the Company’s employees were granted awards of RSUs and stock options for CBS Class B Common Stock under the CBS equity incentive plans. These awards include an annual grant to certain management employees as well as annual grants under the CBS Fund the Future Program to substantially all of the Company’s U.S. employees. At the time of the Offering, outstanding RSUs for CBS Class B Common Stock held by the Company’s employees will be converted into RSUs for shares of the Company. The fair value of the converted RSUs will equal the fair value of the RSU awards for CBS common stock at the time of conversion.
	On March 18, 2014, our board of directors approved the Omnibus Stock Incentive Plan (the “Stock Plan”) and reserved 8,000,000 shares of our common stock for stock-based awards. Under the Stock Plan, the board of directors is authorized to grant awards of options to purchase shares of our common stock (the “Outfront Options”), stock appreciation rights, restricted and unrestricted stock, restricted share units (“RSUs”), dividend equivalents, performance awards, including performance-based restricted share units (“PRSUs”), and other equity-related awards and cash payments to all of our employees and non-employee directors and employees of our subsidiaries. In addition, consultants and advisors who perform services for us and our subsidiaries may, under certain conditions, receive grants under our Stock Plan.															The following table summarizes the Company’s stock-based compensation expense for the years ended December 31, 2013, 2012 and 2011.
	RSUs and PRSUs accrue dividend equivalents in amounts equal to the regular cash dividends paid on our common stock and will be paid in either cash or stock. Accrued dividend equivalents payable in stock shall convert to shares of our common stock on the date of vesting.
																Year Ended December 31,	2013				2012				2011
	The Stock Plan also provides for the treatment of awards held by our employees that were originally granted under various CBS stock plans. Prior to our IPO, certain of our employees were granted awards of RSUs, PRSUs and stock options for CBS Class B common stock under the CBS equity incentive plans. At the time of the IPO, substantially all outstanding RSUs and PRSUs for CBS Class B common stock (the “CBS RSUs”) were converted into RSUs and PRSUs for our common stock (the “Outfront RSUs”) under the Stock Plan.															RSUs	$	6.8			$	5.2			$	4.7
	Compensation expense for RSUs is determined based upon the market price of the shares underlying the awards on the date of grant and expensed over the vesting period, which is generally a three- to four-year service period. For PRSU awards, the number of shares an employee earns may range from 0% to 120% based on the outcome of a one year performance condition. Compensation expense is recorded based on the probable outcome of the performance condition. On an annual basis, the board of directors will review actual performance and certify the degree to which performance goals applicable to the award have been met. Forfeitures of RSUs are estimated on the date of grant based on historical forfeiture rates. On an annual basis, adjustments are made to compensation expense based on actual forfeitures and the forfeiture rates are revised as necessary.															Stock options	0.7				0.5				0.3
	The following table summarizes our stock-based compensation expense for the nine months ended September 30, 2014 and 2013.															Stock-based compensation expense, before income taxes	7.5				5.7				5
																Tax benefit	(3.0		)		(2.3		)		(2.0		)
						Nine Months Ended										Stock-based compensation expense, net of tax	$	4.5			$	3.4			$	3
						September 30,
	(in millions)					2014				2013						RSUs
	RSUs and PRSUs					$	9			$	5.4					Compensation expense for RSUs is determined based upon the market price of the CBS shares underlying the awards on the date of grant and expensed over the vesting period, which is generally a three- to four-year service period. For certain RSU awards the number of shares an employee earns is based on the outcome of performance conditions. Compensation expense is recorded based on the probable outcome of the performance condition. Forfeitures for RSUs are estimated on the date of grant based on historical forfeiture rates. On an annual basis, adjustments are made to compensation expense based on actual forfeitures and the forfeiture rates are revised as necessary.
																The total fair value of RSUs that vested during 2013, 2012 and 2011 was $16.4 million, $11.4 million and $10.1 million, respectively. Total unrecognized compensation cost related to non-vested RSUs at December 31, 2013 was $9.7 million, which is expected to be recognized over a weighted average period of 2.3 years.
	Stock options					1.9				0.4						The following table summarizes the activity of CBS’s RSUs issued to employees of the Company.
	Stock-based compensation expense, before income taxes					10.9				5.8
																	RSUs			Weighted Average
	Tax benefit					(2.8		)		(2.4		)								Grant Date Fair Value
	Stock-based compensation expense, net of tax					$	8.1			$	3.4					Non-vested at December 31, 2012	665,282			$	19.65
																Granted	190,484			$	47.26
	As of September 30, 2014, total unrecognized compensation cost related to non-vested RSUs and PRSUs was $20.6 million, which is expected to be recognized over a weighted average period of 2.9 years, and total unrecognized compensation cost related to non-vested stock options was $0.9 million, which is expected to be recognized over a weighted average period of 2.6 years.
																Vested	(366,273	)		$	17.43
	RSUs and PRSUs
																Forfeited	(17,003	)		$	31.06
	On March 27, 2014, 256,172 non-vested CBS RSUs held by our employees were converted into 561,021 non-vested Outfront RSUs. The number of RSUs was converted at a ratio of approximately 2.2 to 1.0 to preserve the fair value of the awards both before and after conversion.
	The following table summarizes the activity of the RSUs and PRSUs issued to our employees.															Non-vested at December 31, 2013	472,490			$	32.09
																Stock Options
			CBS RSUs						Outfront RSUs							Stock options vest over a four-year service period and expire eight years from the date of grant. Forfeitures are estimated on the date of grant based on historical forfeiture rates. On an annual basis, adjustments are made to compensation expense based on actual forfeitures and the forfeiture rates are revised as necessary.
			Activity		Weighted Average Per Share Grant Date Fair Market Value				Activity			Weighted Average Per Share Grant Date Fair Market Value		RSU and PRSU Dividend Equivalents		The weighted average fair value of stock options as of the grant date was $14.04, $8.83 and $7.59 in 2013, 2012 and 2011, respectively. Compensation expense for stock options is determined based on the grant date fair value of the award using the Black-Scholes options-pricing model with the following weighted average assumptions:
	Non-vested as of December 31, 2013		472,490		$	32.09
	Employee transfers and grants		11,875		34.66												2013			2012			2011
																Expected dividend yield	1.38	%		2	%		2	%
	Vested		(157,723	)	22.51											Expected stock price volatility	35	%		40.2	%		41.16	%
																Risk-free interest rate	1.2	%		1.01	%		2.34	%
	Forfeited		(2,909	)	37.67											Expected term of options (years)	5			5.02			5.06
	Non-vested before conversion		323,733		36.8											The expected stock price volatility is determined using a weighted average of historical volatility for CBS Class B Common Stock and implied volatility of publicly traded options to purchase CBS Class B Common Stock. Given the existence of an actively traded market for CBS options, the Company was able to derive implied volatility using publicly traded options to purchase CBS Class B Common Stock that were trading near the grant date of the employee stock options at a similar exercise price and a remaining term of greater than one year.
																The risk-free interest rate is based on a U.S. Treasury rate in effect on the date of grant with a term equal to the expected life. The expected term is determined based on historical employee exercise and post-vesting termination behavior. The expected dividend yield represents the future expectation of the dividend yield based on current rates and historical patterns of dividend changes.
	CBS RSUs converted to Outfront RSUs		(256,172	)	37.77											Total unrecognized compensation cost related to non-vested stock option awards at December 31, 2013 was $1.7 million, which is expected to be recognized over a weighted average period of 3.0 years.
																The following table summarizes the Company’s stock option activity under the CBS equity incentive plans.
	Non-vested Outfront RSUs converted from CBS RSUs								561,021			$	17.24
	Non-vested CBS RSUs not converted to Outfront RSUs(a)		67,561		33.16												Stock			Weighted Average
																	Options			Exercise Price
	Granted:															Outstanding at December 31, 2012	584,494			$	22.01
	RSUs								478,311			29.59
																Granted	101,611			$	49.64
	PRSUs								168,468			29.7
																Exercised	(213,102	)		$	18.88
	Dividend equivalents													10,032
																Forfeited or Expired	(73,422	)		$	29.69
	Vested:
	RSUs		(67,561	)	33.16				(5,848	)		25.91				Outstanding at December 31, 2013	399,581			$	29.3
	PRSUs								(6,955	)		25.88				Exercisable at December 31, 2013	184,215			$	21.41
	Forfeitures:															The following table summarizes other information relating to stock option exercises during the years ended December 31, 2013, 2012 and 2011.
	RSUs								(27,965	)		24.39
	PRSUs								(15,289	)		26.39				Year Ended December 31,	2013				2012				2011
																Cash paid to CBS by employees of the Company for stock option exercises	$	4			$	6.5			$	0.8
	Dividend equivalents													(2	)
	Non-vested as of September 30, 2014		—		—				1,151,743			23.78		10,030		Tax benefit of stock option exercises	$	2.5			$	0.8			$	0.9
																Intrinsic value of stock option exercises	$	6.1			$	1.9			$	2.1
	(a)	Reflects CBS RSUs which vested in April 2014.														The following table summarizes information concerning outstanding and exercisable stock options to purchase CBS Class B Common Stock under the CBS equity incentive plans at December 31, 2013.
	Stock Options
																	Outstanding									Exercisable
	On July 16, 2014, 219,741 outstanding CBS stock options held by our active employees were converted into 409,207 Outfront Options. Vested outstanding CBS stock options held by former employees of the Company were not converted into Outfront Options. The CBS stock options were converted at a ratio of approximately 1.9 to 1.0 to preserve the intrinsic value of the award at the time of conversion.															Range of	Number			Remaining		Weighted				Number of		Weighted
																Exercise Price	of			Contractual		Average				Options		Average
The following table summarizes the activity of CBS’ stock options issued to our employees.																Options		Life (Years)		Exercise						Exercise
																				Price						Price
															$5 to 9.99	47,081			3.15		$	5.2			47,081		$	5.2
		CBS		CBS				Outfront			Outfront Weighted Average Exercise Price
		Stock Options		Weighted Average Exercise Price				Stock Options							$10 to 19.99	42,036			4.16		$	13.43			16,179		$	13.43
Outstanding as of December 31, 2013		399,581		$	29.3
															$20 to 29.99	154,985			4.22		$	26.99			67,087		$	27
Exercised		(123,260	)	22.04
															$30 to 39.99	53,868			0.18		$	31.03			53,868		$	31.03
Forfeited or expired		(38,523	)	30.75
															$40 to 49.99	53,592			7.12		$	43.21			—		$	—
CBS stock options converted to Outfront stock options		(219,741	)	33.27
															$50 to 59.99	48,019			7.72		$	56.81			—		$	—
Outstanding Outfront stock options converted from CBS stock options								409,207			$	17.87
																399,581									184,215
Exercised								(2,426	)		14.71
															Stock options outstanding at December 31, 2013 have a weighted average remaining contractual life of 4.35 years and the total intrinsic value for “in-the-money” options, based on the closing stock price of CBS Class B Common Stock of $63.74, was $13.8 million. Stock options exercisable at December 31, 2013 have a weighted average remaining contractual life of 2.03 years and the total intrinsic value for “in-the-money” exercisable options was $7.8 million.
Forfeited or expired								(16,170	)		23.08
Outstanding as of September 30, 2014		18,057		27.38				390,611			17.67
Exercisable as of September 30, 2014		18,057		27.38				166,234			12.29

Income_Taxes

Income Taxes	9 Months Ended									12 Months Ended
	Sep. 30, 2014									Dec. 31, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes									INCOME TAXES
										The Company’s U.S. operating results have been included in consolidated federal, and certain state and local income tax returns filed by CBS. The income tax expense reflected in the Combined Consolidated Statements of Operations, deferred tax assets and liabilities included in the Combined Consolidated Balance Sheets and income tax payments reflected in the Combined Consolidated Statements of Cash Flows have been prepared as if these amounts were calculated on a separate tax return basis for the Company. Management believes that the assumptions and estimates used to determine these tax amounts are reasonable. However, the combined consolidated financial statements herein may not necessarily reflect the Company’s income tax expense or tax payments in the future, or what its tax amounts would have been if the Company had been a stand-alone company during the periods presented.
	On July 16, 2014, we ceased to be a member of the CBS consolidated tax group and on July 17, 2014, we began operating in a manner that will allow us to qualify as a REIT for U.S. federal income tax purposes for the tax year commencing July 17, 2014, and ending December 31, 2014. In the third quarter of 2014, as a result of our REIT conversion, substantially all Deferred income tax liabilities, net, was reversed into Net income via a non-cash benefit of approximately $232.3 million. As a result of our REIT conversion, our expected effective tax rate for the second half of 2014 will be substantially lower than previous periods. Prior to July 17, 2014 our U.S. operating results were included in consolidated federal, and certain state and local income tax returns filed by CBS. The income tax expense reflected in the Consolidated Statements of Operations, deferred tax assets and liabilities included in the Consolidated Statements of Financial Position and income tax payments reflected in the Condensed Consolidated Statements of Cash Flows were prepared as if these amounts were calculated on a separate tax return basis for us. We believe that the assumptions and estimates used to determine these tax amounts were reasonable. However, the consolidated financial statements herein may not necessarily reflect our income tax expense or tax payments, or what our tax amounts would have been if we had been a stand-alone company during the periods prior to July 17, 2014.									Cash paid for income taxes was assumed to be $112.8 million, $96.5 million and $50.9 million for the years ended December 31, 2013, 2012 and 2011, respectively.
										The U.S. and foreign components of income before income taxes and equity in earnings of investee companies were as follows:
	As a REIT, we must distribute to our stockholders, for the tax year commencing July 17, 2014, and ending December 31, 2014, at least 90% of our REIT taxable income, determined without regard to the deduction for dividends paid and excluding net capital gain. To the extent that we satisfy the 90% distribution requirement, but distribute less than 100% of our taxable income, we will be subject to U.S. federal corporate income tax on the undistributed income. In addition, we are subject to a 4% nondeductible excise tax on the amount, if any, by which our distributions in any calendar year are less than a minimum amount specified under U.S. federal income tax laws. We intend to distribute net income to our stockholders in a manner to satisfy the REIT 90% distribution requirement and to avoid the 4% nondeductible excise tax.
	On September 30, 2014, we distributed a quarterly dividend of $0.37 per share, which we anticipate will be taxed as ordinary income by our stockholders.									Year Ended December 31,	2013			2012			2011
										United States	$	239.8		$	201.9		$	178.6
	On April 2, 2014, we entered into a tax matters agreement, which governs the respective rights, responsibilities and obligations of CBS and us with respect to tax liabilities and benefits, tax attributes, the preparation and filing of tax returns, the control of audits and other tax proceedings, and other matters regarding taxes for the periods during which we are a member of the CBS consolidated tax group. The tax matters agreement also separately allocates among the parties any tax liability arising as a result of any failure of the Separation to qualify as a tax-free transaction based on actions taken during the two-year period following the Separation.
										Foreign	(2.2		)	(1.7		)	14.6
	Our effective income tax rate represents a combined annual effective tax rate for federal, state, local and foreign taxes applied to interim operating results.
										Total	$	237.6		$	200.2		$	193.2
	Excluding the non-cash benefit recorded as a result of our REIT conversion in 2014, the effective income tax rate was 39.3% in the nine months ended September 30, 2014, and 43.5% in the nine months ended September 30, 2013.
										The components of the provision for income taxes are as follows:
	The difference between income taxes expected at the U.S. federal statutory income tax rate of 35% and the provision for income taxes is summarized as follows:
										Year Ended December 31,	2013			2012			2011
					Nine Months Ended					Current:
					September 30,					Federal	$	85.1		$	71.8		$	32.5
	(in millions)				2014			2013
	Taxes on income at U.S. statutory rate				$	21.2		$	56.7	State and local	21.8			18.9			10.5
	State and local taxes, net of federal tax benefit				4.2			9.9		Foreign	5.2			4.9			12
	Effect of foreign operations				2.2			1.7			112.1			95.6			55
	Reversal of deferred tax liability				(232.3		)	—		Deferred	(15.5		)	(6.6		)	32.8
	Other, net				1.8			2.2		Provision for income taxes	$	96.6		$	89		$	87.8
	Provision for income taxes				$	(202.9	)	$	70.5	The difference between income taxes expected at the U.S. federal statutory income tax rate of 35% and the provision for income taxes is summarized as follows:
	The following table sets forth the change in the reserve for uncertain tax positions, excluding related accrued interest and penalties.									Year Ended December 31,	2013			2012			2011
										Taxes on income at U.S. statutory rate	$	83.2		$	70.1		$	67.6
	(in millions)									State and local taxes, net of federal tax benefit	7.6			13.4			13.1
	As of December 31, 2013	$	4
										Effect of foreign operations	4			2.2			3.4
	Additions for current year tax positions	0.1
										Audit settlements	—			—			3.8
	Reductions for prior year tax positions	(2.9		)
	As of September 30, 2014	$	1.2							Other, net (a)	1.8			3.3			(0.1		)
										Provision for income taxes	$	96.6		$	89		$	87.8
	Reductions for prior year tax positions includes $2.1 million of liabilities which were transferred to CBS pursuant to our tax matters agreement. The reduction in this liability did not impact our provision for income taxes during the period. The reserve for uncertain tax positions of $1.2 million as of September 30, 2014, includes $0.8 million which would affect our effective income tax rate if and when recognized in future years.
										(a)	For 2012, other primarily reflects a charge related to the Company’s domestic production deduction.
										The following table is a summary of the components of deferred income tax assets and liabilities.
										At December 31,	2013			2012
										Deferred income tax assets:
										Provision for expenses and losses	$	31.3		$	35.4
										Postretirement and other employee benefits	9.9			12.7
										Tax credit and loss carryforwards	14.6			13.7
										Other	0.1			1.9
										Total deferred income tax assets	55.9			63.7
										Valuation allowance	(10.1		)	(8.0		)
										Deferred income tax assets, net	45.8			55.7
										Deferred income tax liabilities:
										Property, equipment and intangible assets	(309.3		)	(340.5		)
										Other	(0.5		)	—
										Total deferred income tax liabilities	(309.8		)	(340.5		)
										Deferred income tax liabilities, net	$	(264.0	)	$	(284.8	)
										At December 31, 2012, $2.9 million of noncurrent deferred tax assets was included in “Other assets” on the Combined Consolidated Balance Sheet.
										At December 31, 2013, the Company had net operating loss carryforwards for federal, state and local, and foreign jurisdictions of $47.2 million. Approximately $22.0 million of these losses may be carried forward indefinitely, subject to limitations imposed by local tax laws. The remaining net operating losses expire in various years from 2014 through 2027.
										The 2013 and 2012 deferred income tax assets were reduced by a valuation allowance of $10.1 million and $8.0 million, respectively, principally relating to income tax benefits from net operating losses which are not expected to be realized.
										The Company’s international operations have generated cumulative losses, and, therefore have no unremitted earnings.
										The following table sets forth the change in the reserve for uncertain tax positions, excluding related accrued interest and penalties.
										At January 1, 2011	$	1.9
										Additions for current year tax positions	3.5
										At December 31, 2011	5.4
										Additions for current year tax positions	3.8
										Reductions for prior year tax positions	(4.3		)
										At December 31, 2012	4.9
										Additions for current year tax positions	0.2
										Reductions for prior year tax positions	(1.1		)
									At December 31, 2013	$	4
									The reserve for uncertain tax positions of $4.0 million at December 31, 2013 includes $3.4 million which would affect the Company’s effective income tax rate if and when recognized in future years.
									The Company recognizes interest and penalty charges related to the reserve for uncertain tax positions as part of income tax expense. These charges were not material for any of the periods presented.

Retirement_Benefits

Retirement Benefits	9 Months Ended
	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]
Retirement Benefits	Retirement Benefits
	The following table presents the components of net periodic pension cost and amounts recognized in other comprehensive income (loss) for our pension plans:
			Nine Months Ended
			September 30,
	(in millions)		2014			2013
	Components of net periodic pension cost:
	Service cost		$	1.1		$	1.3
	Interest cost		1.9			1.5
	Expected return on plan assets		(2.1		)	(1.8		)
	Amortization of actuarial losses(a)		0.3			0.8
	Net periodic pension cost		$	1.2		$	1.8
	(a)	Reflects amounts reclassified from accumulated other comprehensive income (loss) to net income.
	In the nine months ended September 30, 2014, we contributed $1.9 million to our pension plans. In 2014, we expect to contribute approximately $2.0 million to our pension plans.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share (“EPS”)
			Nine Months Ended
			September 30,
	(in millions)		2014		2013
	Net income		$	279.1	$	93.5
	Weighted average shares for basic EPS		112.3		112.3
	Dilutive potential shares from grants of RSUs, PRSUs and stock options(a)		0.5		0.5
	Weighted average shares for diluted EPS		112.8		112.8
	(a)	The potential impact of an aggregate 0.1 million granted RSUs, PRSUs and stock options for the nine months ended September 30, 2014, was antidilutive.

Commitment_and_Contingencies

Commitment and Contingencies	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES
		The Company’s commitments not recorded on the Combined Consolidated Balance Sheets primarily consist of operating lease arrangements and guaranteed minimum franchise payments. These arrangements result from the Company’s normal course of business and represent obligations that are payable over several years.
	Off-Balance Sheet Commitments	The Company has long-term operating leases for billboard sites, office space and equipment, which expire at various dates. Certain leases contain renewal and escalation clauses.
		The Company has agreements with municipalities and transit operators which entitle it to operate advertising displays within their transit systems, including on the interior and exterior of rail and subway cars and buses, as well as on benches, transit shelters, street kiosks, and transit platforms. Under most of these franchise agreements, the franchisor is entitled to receive the greater of a percentage of the relevant revenues, net of agency fees, or a specified guaranteed minimum annual payment.
	Our off-balance sheet commitments primarily consist of operating lease arrangements and guaranteed minimum franchise payments. These arrangements result from our normal course of business and represent obligations that are payable over several years.	At December 31, 2013, minimum rental payments under noncancellable operating leases with terms in excess of one year and guaranteed minimum franchise payments are as follows:
	We have long-term operating leases for office space, billboard sites and equipment, which expire at various dates. Certain leases contain renewal and escalation clauses.
			Operating		Guaranteed
	We have agreements with municipalities and transit operators which entitle us to operate advertising displays within their transit systems, including on the interior and exterior of rail and subway cars and buses, as well as on benches, transit shelters, street kiosks, and transit platforms. Under most of these franchise agreements, the franchisor is entitled to receive the greater of a percentage of the relevant revenues, net of agency fees, or a specified guaranteed minimum annual payment.		Leases		Minimum
					Franchise Payments
	Letters of Credit	2014	$	89.7	$	150.8
	We have indemnification obligations with respect to letters of credit and surety bonds primarily used as security against non-performance in the normal course of business. The outstanding letters of credit and surety bonds approximated $99.3 million as of September 30, 2014, of which none was indemnified by CBS, and $78.3 million as of December 31, 2013, all of which was indemnified by CBS, and were not recorded on the Consolidated Statements of Financial Position.	2015	84.2		97.2
	Legal Matters	2016	73		22.7
	On an ongoing basis, we are engaged in lawsuits and governmental proceedings and respond to various investigations, inquiries, notices and claims from national, state and local governmental and other authorities (collectively, “litigation”). Litigation is inherently uncertain and always difficult to predict. Although it is not possible to predict with certainty the eventual outcome of any litigation, in our opinion, none of our current litigation is expected to have a material adverse effect on our results of operations, financial position or cash flows.	2017	59.8		14.7
		2018	51.8		7.2
		2019 and thereafter	315.5		38.7
		Total minimum payments	$	674	$	331.3
		Rent expense was $292.0 million in 2013, $283.2 million in 2012 and $279.3 million in 2011, including contingent rent amounts of $35.7 million in 2013, $28.6 million in 2012 and $24.7 million in 2011. Rent expense is primarily reflected in operating expenses on the Combined Consolidated Statements of Operations and includes rent on cancellable leases and leases with terms under one year, as well as contingent rent, none of which are included in the operating lease commitments in the table above.
		The Company uses letters of credit and surety bonds, which are indemnified by CBS, primarily as security against nonperformance in the normal course of business. At December 31, 2013, the outstanding letters of credit and surety bonds approximated $78.3 million and were not recorded on the Combined Consolidated Balance Sheet.
		Legal Matters
		On an ongoing basis, the Company is engaged in lawsuits and governmental proceedings and responds to various investigations, inquiries, notices and claims from national, state and local governmental and other authorities (collectively, “litigation”) as the outdoor advertising industry is subject to governmental regulation. Litigation is inherently uncertain and always difficult to predict. Although it is not possible to predict with certainty the eventual outcome of any litigation, in the Company’s opinion, none of its current litigation is expected to have a material adverse effect on the Company’s results of operations, financial position or cash flows.

Segment_Information

Segment Information	9 Months Ended										12 Months Ended
	Sep. 30, 2014										Dec. 31, 2013
Segment Reporting [Abstract]
Segment Information	Segment Information										SEGMENT INFORMATION
											The following tables set forth the Company’s financial performance by segment. The Company manages its operations through two segments—United States and International.
	The following tables set forth our financial performance by segment. We manage our operations through two segments—U.S. and International.
											Year Ended December 31,	2013			2012			2011
					Nine Months Ended
					September 30,						Revenues:
	(in millions)				2014			2013			United States	$	1,130.10		$	1,098.60		$	1,051.50
	Revenues:
	U.S.				$	842.4		$	827.6		International	163.9			186			225.6
	International				116.4			122.5			Total revenues	$	1,294.00		$	1,284.60		$	1,277.10
	Total revenues				$	958.8		$	950.1		The Company presents operating income (loss) before depreciation and amortization (“OIBDA”), net gain (loss) on dispositions, stock-based compensation and restructuring charges (“Adjusted OIBDA”) as the primary measure of profit and loss for its operating segments in accordance with FASB guidance for segment reporting. The Company believes the presentation of Adjusted OIBDA is relevant and useful for users because it allows users to view segment performance in a manner similar to the primary method used by the Company’s management and enhances their ability to understand the Company’s operating performance.
	We present Operating income (loss) before Depreciation, Amortization, Net gain (loss) on dispositions, Stock-based compensation, Restructuring charges and Acquisition costs (“Adjusted OIBDA”) as the primary measure of profit and loss for our operating segments in accordance with FASB guidance for segment reporting.										Year Ended December 31,	2013			2012			2011
											Adjusted OIBDA:
					Nine Months Ended						United States	$	406.4		$	385.4		$	364.7
					September 30,
	(in millions)				2014			2013			International	29.1			30.5			57.2
	Net income				$	279.1		$	93.5
											Corporate	(20.7		)	(7.5		)	(7.6		)
	(Benefit) provision for income taxes				(202.9		)	70.5			Total Adjusted OIBDA	414.8			408.4			414.3
	Equity in earnings of investee companies, net of tax				(1.4		)	(1.9		)	Restructuring charges	—			(2.5		)	(3.0		)
	Interest expense (income), net				57.3			—
											Net gain (loss) on dispositions	27.3			(2.2		)	(2.0		)
	Other (income) expense, net				0.5			—
											Depreciation	(104.5		)	(105.9		)	(109.0		)
	Operating income				132.6			162.1			Amortization	(91.3		)	(90.9		)	(102.9		)
											Stock-based compensation(a)	(7.5		)	(5.7		)	(5.0		)
	Restructuring charges(a)				6.2			—			Operating income	238.8			201.2			192.4
	Acquisition costs(a)				1.4			—			Other income (expense), net	(1.2		)	(1.0		)	0.8
	Net gain on dispositions				(1.4		)	(9.8		)	Income before income taxes and equity in earnings of investee companies	237.6			200.2			193.2
	Depreciation and amortization				146.6			146.5
											Provision for income taxes	(96.6		)	(89.0		)	(87.8		)
	Stock-based compensation(a)				7.4			5.8			Equity in earnings of investee companies, net of tax	2.5			2.2			1.7
	Total Adjusted OIBDA				$	292.8		$	304.6		Net income	$	143.5		$	113.4		$	107.1
	Adjusted OIBDA:										(a)	Stock-based compensation is classified as a Corporate expense.
	U.S.				$	293		$	300.2
	International				16.9			20			Year Ended December 31,	2013			2012			2011
	Corporate				(17.1		)	(15.6		)	Operating income (loss):
	Total Adjusted OIBDA				$	292.8		$	304.6		United States	$	267.1		$	216.4		$	192.2
											International	(0.1		)	(2.0		)	12.8
	(a)	Restructuring charges (including stock-based compensation of $3.5 million), costs related to the Acquisition and stock-based compensation are classified as Corporate expense.									Corporate	(28.2		)	(13.2		)	(12.6		)
											Total operating income	$	238.8		$	201.2		$	192.4
					Nine Months Ended
					September 30,
	(in millions)				2014			2013			Year Ended December 31,	2013			2012			2011
	Operating income (loss):
	U.S.				$	168.5		$	185.4		Depreciation and amortization:
											United States	$	166.8		$	165.6		$	168.2
	International				(3.8		)	(1.9		)
	Corporate				(32.1		)	(21.4		)	International	29			31.2			43.7
	Total operating income				$	132.6		$	162.1
											Total depreciation and amortization	$	195.8		$	196.8		$	211.9
	Net (gain) loss on dispositions:
	U.S.				$	(1.3	)	$	(10.0	)
	International				(0.1		)	0.2			Year Ended December 31,	2013			2012			2011
	Total gain on dispositions				$	(1.4	)	$	(9.8	)	Capital expenditures:
											United States	$	54.1		$	42.5		$	36.8
	Depreciation and amortization:
	U.S.				$	125.8		$	124.8		International	6.8			5.7			6.8
	International				20.8			21.7			Total capital expenditures	$	60.9		$	48.2		$	43.6
	Total depreciation and amortization				$	146.6		$	146.5
											At December 31,	2013			2012
	Capital expenditures:
	U.S.				$	37.4		$	37.1		Assets:
											United States	$	3,027.60		$	3,114.40
International				6.2			4.4
										International	327.9			350.5
Total capital expenditures				$	43.6		$	41.5
										Total assets	$	3,355.50		$	3,464.90
		As of
(in millions)		September 30, 2014		December 31,						Year Ended December 31,	2013			2012			2011
				2013
Assets:										Revenues: (a)
U.S.		$	2,967.00	$	3,027.60					United States	$	1,130.10		$	1,098.60		$	1,051.50
International		297.3		327.9						Canada	84.7			99.2			138.1
Corporate		258.5		—						Latin America	79.2			86.8			87.5
Total assets		$	3,522.80	$	3,355.50					Total revenues	$	1,294.00		$	1,284.60		$	1,277.10
										(a)	Revenues classifications are based on customers’ locations.
										At December 31,	2013			2012
										Long-lived assets: (a)
										United States	$	2,768.50		$	2,782.70
										Canada	138.1			193.7
										Latin America	107.6			159.3
										Total long-lived assets	$	3,014.20		$	3,135.70
										(a)	Reflects total assets less current assets, investments and noncurrent deferred tax assets.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events
	New Senior Unsecured Notes
	On October 1, 2014, the Borrowers issued $150.0 million aggregate principal amount of 5.250% Senior Unsecured Notes due 2022 (the “New 2022 Senior Notes”) in a private placement. The New 2022 Senior Notes are of the same class and series as, and otherwise identical to, the 5.250% Senior Unsecured Notes due 2022 that were previously issued by the Borrowers on January 31, 2014 (see Note 8. Long-Term Debt). Interest on the New 2022 Senior Notes is payable on May 15 and November 15 of each year, beginning on November 15, 2014. The New 2022 Senior Notes were issued at a discount of $0.8 million, which we will amortize through Interest expense on the Consolidated Statement of Operations over the life of the New 2022 Senior Notes.
	On October 1, 2014, the Borrowers also issued $450.0 million aggregate principal amount of 5.875% Senior Unsecured Notes due 2025 (the “2025 Senior Notes,” together with the “New 2022 Senior Notes,” the “New Senior Notes”) in a private placement. The New Senior Notes are fully and unconditionally guaranteed on a senior unsecured basis by the Company and each of its direct and indirect wholly owned domestic subsidiaries that guarantee the Senior Credit Facilities. Interest on the 2025 Senior Notes is payable on March 15 and September 15 of each year, beginning on March 15, 2015.
	On or after February 15, 2017, the Borrowers may redeem at any time, or from time to time, some or all of the New 2022 Senior Notes and on or after September 15, 2019, the Borrowers may redeem at any time, or from time to time, some or all of the 2025 Senior Notes. Prior to such dates, the Borrowers may redeem some or all of the New Senior Notes subject to a customary make-whole premium. In addition, prior to February 15, 2017, the Borrowers may redeem up to 35% of the aggregate principal amount of the New 2022 Senior Notes and prior to September 15, 2017, the Borrowers may redeem up to 35% of the aggregate principal amount of the 2025 Senior Notes with the proceeds of certain equity offerings.
	Pursuant to a registration rights agreement dated October 1, 2014, we and the Borrowers have agreed to use commercially reasonable efforts to cause a registration statement to become effective with the SEC by October 1, 2015, related to an offer to exchange the New Senior Notes for registered New Senior Notes having substantially identical terms, or, in certain cases, to register the New Senior Notes for resale. If we and the Borrowers do not register or exchange the New Senior Notes pursuant to the terms of the registration rights agreement, the Borrowers will be required to pay additional interest to the holders of the New Senior Notes under certain circumstances.
	On October 1, 2014, we deferred $10.8 million of fees and expenses associated with the New Senior Notes. We will amortize the deferred fees through Interest expense on the Consolidated Statement of Operations over the term of the New Senior Notes. As of September 30, 2014, we had accrued $1.6 million of deferred financing costs associated with the New Senior Notes.
	Acquisition
	On October 1, 2014, we completed the Acquisition. The Acquisition was funded with the net proceeds from the issuance and sale of the New Senior Notes and cash on hand. The information required to perform the purchase price allocation is not yet available. As a result, the required Accounting Standards Codification 805 disclosures have not been made.
	In addition, as of November 6, 2014, we completed “tuck-in” acquisitions of advertising structures in the city of Chicago, Illinois, and the surrounding metropolitan area, and two smaller tuck-in acquisitions for approximately $15.0 million in cash.

Quarterly_Financial_Data_Notes

Quarterly Financial Data (Notes)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	QUARTERLY FINANCIAL DATA (unaudited):
	The Company’s revenues and profits experience seasonality due to seasonal advertising patterns and influences on advertising markets. Typically, the Company’s revenues and profits are highest in the fourth quarter, during the holiday shopping season, and lowest in the first quarter, as advertisers cut back on spending following the holiday shopping season.
	2013	First					Second					Third					Fourth				Total
		Quarter					Quarter					Quarter					Quarter				Year
	Revenues:
	United States	$	245.2				$	285.9				$	296.5				$	302.5			$	1,130.10
	International	34					46.8					41.7					41.4				163.9
	Total revenues	$	279.2				$	332.7				$	338.2				$	343.9			$	1,294.00
	Adjusted OIBDA:
	United States	$	80.1				$	106.5				$	113.6				$	106.2			$	406.4
	International	0.6					11.5					7.9					9.1				29.1
	Corporate	(5.3		)			(4.9		)			(5.4		)			(5.1		)		(20.7		)
	Total Adjusted OIBDA	75.4					113.1					116.1					110.2				414.8
	Net gain (loss) on dispositions	9.8			(a)		(0.1		)			0.1					17.5			(b)	27.3
	Depreciation	(26.0		)			(25.9		)			(26.4		)			(26.2		)		(104.5		)
	Amortization	(22.9		)			(22.7		)			(22.6		)			(23.1		)		(91.3		)
	Stock-based compensation	(1.6		)			(1.6		)			(2.6		)			(1.7		)		(7.5		)
	Total operating income	$	34.7				$	62.8				$	64.6				$	76.7			$	238.8
	Operating income (loss):
	United States	$	48.2				$	65.2				$	72				$	81.7			$	267.1
	International	(6.6		)			4.1					0.6					1.8				(0.1		)
	Corporate	(6.9		)			(6.5		)			(8.0		)			(6.8		)		(28.2		)
	Total operating income	$	34.7				$	62.8				$	64.6				$	76.7			$	238.8
	Net income	$	19.9				$	36.4				$	37.2				$	50			$	143.5
	(a)	During the first quarter of 2013, the Company exchanged most of its billboards in Salt Lake City for billboards in New Jersey resulting in a gain of $9.8 million.
	(b)	During the fourth quarter of 2013, the Company sold 50% of its transit shelter operations in Los Angeles, and the Company and the buyer each subsequently contributed their respective 50% interests in these operations to a 50/50 joint venture they own together. This transaction resulted in a gain of $17.5 million.
	2012	First				Second				Third				Fourth				Total
		Quarter				Quarter				Quarter				Quarter				Year
	Revenues:
	United States	$	244.6			$	281.7			$	284.9			$	287.4			$	1,098.60
	International	41.3				49.7				46.6				48.4				186
	Total revenues	$	285.9			$	331.4			$	331.5			$	335.8			$	1,284.60
	Adjusted OIBDA:
	United States	$	76.7			$	101.9			$	108.1			$	98.7			$	385.4
	International	5.9				13.3				11				0.3				30.5
	Corporate	(1.7		)		(1.6		)		(2.0		)		(2.2		)		(7.5		)
	Total Adjusted OIBDA	80.9				113.6				117.1				96.8				408.4
	Restructuring charges	—				(0.5		)		(1.9		)		(0.1		)		(2.5		)
	Net loss on dispositions	(0.8		)		(0.7		)		(0.3		)		(0.4		)		(2.2		)
	Depreciation	(26.5		)		(26.8		)		(26.7		)		(25.9		)		(105.9		)
	Amortization	(22.1		)		(22.8		)		(23.0		)		(23.0		)		(90.9		)
	Stock-based compensation	(1.3		)		(1.5		)		(1.5		)		(1.4		)		(5.7		)
	Total operating income	$	30.2			$	61.3			$	63.7			$	46			$	201.2
	Operating income (loss):
	United States	$	35.1			$	59.3			$	64.5			$	57.5			$	216.4
	International	(1.9		)		5.1				2.7				(7.9		)		(2.0		)
	Corporate	(3.0		)		(3.1		)		(3.5		)		(3.6		)		(13.2		)
	Total operating income	$	30.2			$	61.3			$	63.7			$	46			$	201.2
	Net income	$	18.7			$	37.2			$	38.7			$	18.8			$	113.4

Condensed_Consolidating_Financ

Condensed Consolidating Financial Statements	9 Months Ended																				12 Months Ended
	Sep. 30, 2014																				Dec. 31, 2013
Condensed Consolidated Financial Statements [Abstract]
Condensed Financial Statements [Text Block]	Condensed Consolidating Information																				We and our material existing and future direct and indirect 100% owned domestic subsidiaries (except the Borrowers under the Senior Credit Facilities), including Outdoor Inc., Outfront Media LLC, Outfront Media Group LLC, Outfront Media Outernet Inc., Outfront Media Sports Inc. and Outfront Media L.A. Inc., guarantee the obligations under the Term Loan and the Revolving Credit Facility. The Senior Notes and New Senior Notes are fully and unconditionally, and jointly and severally guaranteed on a senior unsecured basis by us and each of our direct and indirect wholly owned domestic subsidiaries that guarantees the Senior Credit Facilities (see Note 14. Subsequent Events and Note 15. Subsequent Events (Unaudited)). The Parent Company and the Subsidiary Issuer were formed in preparation for the split-off. The balances and activity with respect to these entities were minimal prior to our incurrence of indebtedness pursuant to the Senior Credit Facilities and the Senior Notes in January 2014. The following condensed consolidating schedules present financial information on a combined basis in conformity with the SEC’s Regulation S-X, Rule 3-10:
	We and our material existing and future direct and indirect 100% owned domestic subsidiaries (except the Borrowers under the Senior Credit Facilities), including Outdoor Inc., Outfront Media LLC, Outfront Media Group LLC, Outfront Media Outernet Inc., Outfront Media Sports Inc. and Outfront Media L.A. Inc., guarantee the obligations under the Term Loan and the Revolving Credit Facility. The Senior Notes and New Senior Notes are fully and unconditionally, and jointly and severally guaranteed on a senior unsecured basis by us and each of our direct and indirect wholly owned domestic subsidiaries that guarantees the Senior Credit Facilities (see Note 8. Long-Term Debt and Note 17. Subsequent Events). The Parent Company and the Subsidiary Issuer were formed in preparation for the Separation. The balances and activity with respect to these entities were minimal prior to our incurrence of indebtedness pursuant to the Senior Credit Facilities and the Senior Notes in January 2014. The following condensed consolidating schedules present financial information on a combined basis in conformity with the SEC’s Regulation S-X, Rule 3-10:
																						As of December 31, 2013
																					(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
			As of September 30, 2014																		Current assets:
	(in millions)		Parent Company			Subsidiary Issuer(a)			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			Cash and cash equivalents	$	—	$	—	$	2.1		$	27.7		$	—		$	29.8
	Current assets:
	Cash and cash equivalents		$	—		$	230		$	23.5		$	18.7		$	—		$	272.2		Receivables, less allowances	—		—		146			32.8			—			178.8
	Receivables, less allowances		—			—			140.9			34.7			—			175.6			Other current assets	—		—		89.1			19.5			—			108.6
	Other current assets		—			4.1			87.4			21.5			—			113			Total current assets	—		—		237.2			80			—			317.2
	Total current assets		—			234.1			251.8			74.9			—			560.8			Property and equipment, net	—		—		628.1			127.3			—			755.4
	Property and equipment, net		—			—			596.2			108.2			—			704.4			Goodwill	—		—		1,751.60			114.1			—			1,865.70
	Goodwill		—			—			1,751.40			109			—			1,860.40			Intangible assets	—		—		364.2			0.2			—			364.4
	Intangible assets		—			—			319.9			0.2			—			320.1			Investment in subsidiaries	—		—		232.9			—			(232.9		)	—
	Investment in subsidiaries		1,567.00			2,935.50			218.6			—			(4,721.1		)	—			Other assets	—		—		46.5			6.3			—			52.8
	Other assets		—			23.9			48.1			5.1			—			77.1			Intercompany	—		—		66			55.7			(121.7		)	—
	Intercompany		—			—			66.1			54.8			(120.9		)	—			Total assets	$	—	$	—	$	3,326.50		$	383.6		$	(354.6	)	$	3,355.50
	Total assets		$	1,567.00		$	3,193.50		$	3,252.10		$	352.2		$	(4,842.0	)	$	3,522.80
																					Total current liabilities	$	—	$	—	$	168.3		$	43.9		$	—		$	212.2
	Total current liabilities		$	—		$	28.3		$	176.4		$	33.2		$	—		$	237.9		Deferred income tax liabilities, net	—		—		259.4			29.1			—			288.5
	Long-term debt		—			1,598.20			—			—			—			1,598.20			Asset retirement obligation	—		—		23.1			8.6			—			31.7
	Deferred income tax liabilities, net		—			—			(1.1		)	23.9			—			22.8			Other liabilities	—		—		65.6			3.1			—			68.7
	Asset retirement obligation		—			—			23.7			8.6			—			32.3			Intercompany	—		—		55.7			66			(121.7		)	—
	Deficit in excess of investment in subsidiaries		—			—			1,368.50			—			(1,368.5		)	—			Total liabilities	—		—		572.1			150.7			(121.7		)	601.1
	Other liabilities		—			—			62.8			1.8			—			64.6			Total invested equity	—		—		2,754.40			232.9			(232.9		)	2,754.40
	Intercompany		—			—			54.8			66.1			(120.9		)	—			Total liabilities and invested equity	$	—	$	—	$	3,326.50		$	383.6		$	(354.6	)	$	3,355.50
	Total liabilities		—			1,626.50			1,685.10			133.6			(1,489.4		)	1,955.80
	Total stockholders’ equity		1,567.00			1,567.00			1,567.00			218.6			(3,352.6		)	1,567.00				As of December 31, 2012
																					(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Total liabilities and shareholders’ equity		$	1,567.00		$	3,193.50		$	3,252.10		$	352.2		$	(4,842.0	)	$	3,522.80		Current assets:
																					Cash and cash equivalents	$	—	$	—	$	9.5		$	10.7		$	—		$	20.2
																					Receivables, less allowances	—		—		138			37.1			—			175.1
	(a)	Outfront Media Capital Corporation is a co-issuer finance subsidiary with no assets or liabilities and has not been presented herein.
																					Other current assets	—		—		98.2			21.5			—			119.7
			As of December 31, 2013																		Total current assets	—		—		245.7			69.3			—			315
	(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Current assets:																				Property and equipment, net	—		—		655.8			152.1			—			807.9
	Cash and cash equivalents		$	—		$	—		$	2.1		$	27.7		$	—		$	29.8
																					Goodwill	—		—		1,758.00			119.2			—			1,877.20
	Receivables, less allowances		—			—			146			32.8			—			178.8
																					Intangible assets	—		—		419.7			0.3			—			420
	Other current assets		—			—			89.1			19.5			—			108.6
																					Investment in subsidiaries	—		—		241			—			(241.0		)	—
	Total current assets		—			—			237.2			80			—			317.2
																					Other assets	—		—		35.2			9.6			—			44.8
	Property and equipment, net		—			—			628.1			127.3			—			755.4
																					Intercompany	—		—		65.8			56.5			(122.3		)	—
	Goodwill		—			—			1,751.60			114.1			—			1,865.70
																					Total assets	$	—	$	—	$	3,421.20		$	407		$	(363.3	)	$	3,464.90
	Intangible assets		—			—			364.2			0.2			—			364.4
	Investment in subsidiaries		—			—			232.9			—			(232.9		)	—			Total current liabilities	$	—	$	—	$	158.7		$	46.9		$	—		$	205.6
	Other assets		—			—			46.5			6.3			—			52.8			Deferred income tax liabilities, net	—		—		276.8			37			—			313.8
	Intercompany		—			—			66			55.7			(121.7		)	—			Asset retirement obligation	—		—		28			2.6			—			30.6
	Total assets		$	—		$	—		$	3,326.50		$	383.6		$	(354.6	)	$	3,355.50		Other liabilities	—		—		57.3			13.7			—			71
																					Intercompany	—		—		56.5			65.8			(122.3		)	—
	Total current liabilities		$	—		$	—		$	168.3		$	43.9		$	—		$	212.2
																					Total liabilities	—		—		577.3			166			(122.3		)	621
	Deferred income tax liabilities, net		—			—			259.4			29.1			—			288.5
																					Total invested equity	—		—		2,843.90			241			(241.0		)	2,843.90
	Asset retirement obligation		—			—			23.1			8.6			—			31.7
																					Total liabilities and invested equity	$	—	$	—	$	3,421.20		$	407		$	(363.3	)	$	3,464.90
	Other liabilities		—			—			65.6			3.1			—			68.7
	Intercompany		—			—			55.7			66			(121.7		)	—
	Total liabilities		—			—			572.1			150.7			(121.7		)	601.1				Year Ended December 31, 2013
(in millions)																					Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Total invested equity		—			—			2,754.40			232.9			(232.9		)	2,754.40			Revenues:
																				Billboard	$	—	$	—	$	796.6		$	129.1		$	—		$	925.7
Total liabilities and invested equity		$	—		$	—		$	3,326.50		$	383.6		$	(354.6	)	$	3,355.50
																				Transit and other	—		—		333.5			34.8			—			368.3
																				Total revenues	—		—		1,130.10			163.9			—			1,294.00
		Nine Months Ended September 30, 2014																		Expenses:
(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			Operating	—		—		584.2			102.7			—			686.9
Revenues:
Billboard		$	—		$	—		$	599.7		$	90.5		$	—		$	690.2		Selling, general and administrative	—		—		167.7			32.1			—			199.8
Transit and other		—			—			242.7			25.9			—			268.6			Net (gain) loss on dispositions	—		—		(27.5		)	0.2			—			(27.3		)
Total revenues		—			—			842.4			116.4			—			958.8			Depreciation	—		—		80.7			23.8			—			104.5
Expenses:																				Amortization	—		—		86.1			5.2			—			91.3
Operating		—			—			436.2			76.1			—			512.3
																				Total expenses	—		—		891.2			164			—			1,055.20
Selling, general and administrative		0.9			—			136.8			23.4			—			161.1
																				Operating income	—		—		238.9			(0.1		)	—			238.8
Restructuring charges		—			—			6.2			—			—			6.2
																				Other income (expenses)	—		—		(0.2		)	(1.0		)	—			(1.2		)
Acquisition costs		—			—			1.4			—			—			1.4
																				Income before income taxes and equity earnings of investee	—		—		238.7			(1.1		)	—			237.6
Net (gain) loss on dispositions		—			—			(1.3		)	(0.1		)	—			(1.4		)
																				Provision for income taxes	—		—		(93.3		)	(3.3		)	—			(96.6		)
Depreciation		—			—			62.2			17.1			—			79.3
																				Equity in earnings of investee companies, net of tax	—		—		(1.9		)	—			4.4			2.5
Amortization		—			—			63.6			3.7			—			67.3
																				Net income	$	—	$	—	$	143.5		$	(4.4	)	$	4.4		$	143.5
Total expenses		0.9			—			705.1			120.2			—			826.2
Operating income		(0.9		)	—			137.3			(3.8		)	—			132.6			Net income	$	—	$	—	$	143.5		$	(4.4	)	$	4.4		$	143.5
Interest expense		—			(57.3		)	(0.1		)	0.1			—			(57.3		)	Other comprehensive income (loss), net of tax:
																				Cumulative translation adjustments	—		—		(14.9		)	(14.9		)	14.9			(14.9		)
Other income (expenses)		—			—			—			(0.5		)	—			(0.5		)
																				Net actuarial loss	—		—		5.8			5.6			(5.6		)	5.8
Income before income taxes and equity earnings of investee		(0.9		)	(57.3		)	137.2			(4.2		)	—			74.8
																				Total other comprehensive income (loss), net of tax	—		—		(9.1		)	(9.3		)	9.3			(9.1		)
Provision for income taxes		—			—			205.2			(2.3		)	—			202.9
																				Total comprehensive income	$	—	$	—	$	134.4		$	(13.7	)	$	13.7		$	134.4
Equity in earnings of investee companies, net of tax		280			337.3			(62.4		)	0.4			(553.9		)	1.4
Net income		$	279.1		$	280		$	280		$	(6.1	)	$	(553.9	)	$	279.1
																					Year Ended December 31, 2012
																				(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net income		$	279.1		$	280		$	280		$	(6.1	)	$	(553.9	)	$	279.1		Revenues:
																				Billboard	$	—	$	—	$	770.7		$	142.9		$	—		$	913.6
Other comprehensive income (loss), net of tax:
Cumulative translation adjustments		(3.1		)	(3.1		)	(3.1		)	(3.1		)	9.3			(3.1		)	Transit and other	—		—		327.9			43.1			—			371
Net actuarial loss		0.2			0.2			0.2			0.2			(0.6		)	0.2			Total revenues	—		—		1,098.60			186			—			1,284.60
Deferred tax rate adjustment		(1.2		)	(1.2		)	(1.2		)	(1.2		)	3.6			(1.2		)	Expenses:
																				Operating	—		—		577.9			122.2			—			700.1
Total other comprehensive income (loss), net of tax		(4.1		)	(4.1		)	(4.1		)	(4.1		)	12.3			(4.1		)
																				Selling, general and administrative	—		—		148.5			33.3			—			181.8
Total comprehensive income		$	275		$	275.9		$	275.9		$	(10.2	)	$	(541.6	)	$	275
																				Restructuring charges	—		—		1.8			0.7			—			2.5
																				Net (gain) loss on dispositions	—		—		1.6			0.6			—			2.2
		Nine Months Ended September 30, 2013
(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			Depreciation	—		—		80.4			25.5			—			105.9
Revenues:
Billboard		$	—		$	—		$	589.8		$	96		$	—		$	685.8		Amortization	—		—		85.2			5.7			—			90.9
Transit and other		—			—			237.8			26.5			—			264.3			Total expenses	—		—		895.4			188			—			1,083.40
Total revenues		—			—			827.6			122.5			—			950.1			Operating income (loss)	—		—		203.2			(2.0		)	—			201.2
Expenses:																				Other income (expenses)	—		—		(0.1		)	(0.9		)	—			(1.0		)
Operating		—			—			426.1			78.4			—			504.5
																				Income before income taxes and equity earnings of investee	—		—		203.1			(2.9		)	—			200.2
Selling, general and administrative		—			—			122.7			24.1			—			146.8
																				Provision for income taxes	—		—		(87.3		)	(1.7		)	—			(89.0		)
Net (gain) loss on dispositions		—			—			(10.0		)	0.2			—			(9.8		)
																				Equity in earnings of investee companies, net of tax	—		—		(2.4		)	—			4.6			2.2
Depreciation		—			—			60.5			17.8			—			78.3
																				Net income	$	—	$	—	$	113.4		$	(4.6	)	$	4.6		$	113.4
Amortization		—			—			64.3			3.9			—			68.2
Total expenses		—			—			663.6			124.4			—			788			Net income	$	—	$	—	$	113.4		$	(4.6	)	$	4.6		$	113.4
Operating income (loss)		—			—			164			(1.9		)	—			162.1			Other comprehensive income (loss), net of tax:
																				Cumulative translation adjustments	—		—		11			11			(11.0		)	11
Interest expense		—			—			—			—			—			—
																				Net actuarial loss	—		—		(1.4		)	(1.3		)	1.3			(1.4		)
Other income (expenses)		—			—			(0.1		)	0.1			—			—
																				Total other comprehensive income (loss), net of tax	—		—		9.6			9.7			(9.7		)	9.6
Income before income taxes and equity earnings of investee		—			—			163.9			(1.8		)	—			162.1
																				Total comprehensive income	$	—	$	—	$	123		$	5.1		$	(5.1	)	$	123
Provision for income taxes		—			—			(68.2		)	(2.3		)	—			(70.5		)
Equity in earnings of investee companies, net of tax		—			—			(2.2		)	—			4.1			1.9
Net income		$	—		$	—		$	93.5		$	(4.1	)	$	4.1		$	93.5			Year Ended December 31, 2011
																				(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
																				Revenues:
Net income		$	—		$	—		$	93.5		$	(4.1	)	$	4.1		$	93.5		Billboard	$	—	$	—	$	746.8		$	147.4		$	—		$	894.2
Other comprehensive income (loss), net of tax:																				Transit and other	—		—		304.7			78.2			—			382.9
Cumulative translation adjustments		—			—			(12.3		)	(12.3		)	12.3			(12.3		)
																				Total revenues	—		—		1,051.50			225.6			—			1,277.10
Net actuarial loss		—			—			0.4			0.4			(0.4		)	0.4
																				Expenses:
Total other comprehensive income (loss), net of tax		—			—			(11.9		)	(11.9		)	11.9			(11.9		)	Operating	—		—		554.3			135.1			—			689.4
Total comprehensive income		$	—		$	—		$	81.6		$	(16.0	)	$	16		$	81.6		Selling, general and administrative	—		—		145.1			33.3			—			178.4
																				Restructuring charges	—		—		2.2			0.8			—			3
		Nine Months Ended September 30, 2014																		Net (gain) loss on dispositions	—		—		2.1			(0.1		)	—			2
(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Cash provided by operating activities		$	(0.9	)	$	(25.6	)	$	213.9		$	(2.9	)	$	—		$	184.5		Depreciation	—		—		81.5			27.5			—			109
Cash used in investing activities		—			—			(35.3		)	(6.0		)	—			(41.3		)	Amortization	—		—		86.7			16.2			—			102.9
Financing activities:																				Total expenses	—		—		871.9			212.8			—			1,084.70
Proceeds from IPO		615			—			—			—			—			615
																				Operating income (loss)	—		—		179.6			12.8			—			192.4
Proceeds from long-term debt borrowings		—			1,598.00			—			—			—			1,598.00
																				Other income (expenses)	—		—		(0.1		)	0.9			—			0.8
Deferred financing fees		—			(24.8		)	—			—			—			(24.8		)
																				Income before income taxes and equity earnings of investee	—		—		179.5			13.7			—			193.2
Distribution of debt and IPO proceeds to CBS		(515.0		)	(1,523.8		)	—			—			—			(2,038.8		)
																				Provision for income taxes	—		—		(79.2		)	(8.6		)	—			(87.8		)
Net cash contribution from CBS		—			—			39.8			—			—			39.8
																				Equity in earnings of investee companies, net of tax	—		—		6.8			—			(5.1		)	1.7
Dividends		(88.8		)	—			—			—			—			(88.8		)
																				Net income	$	—	$	—	$	107.1		$	5.1		$	(5.1	)	$	107.1
Intercompany		(10.3		)	206.2			(197.0		)	1.1			—			—
Cash used in financing activities		0.9			255.6			(157.2		)	1.1			—			100.4			Net income	$	—	$	—	$	107.1		$	5.1		$	(5.1	)	$	107.1
Effect of exchange rate on cash and cash equivalents		—			—			—			(1.2		)	—			(1.2		)	Other comprehensive income (loss), net of tax:
																				Cumulative translation adjustments	—		—		(14.3		)	(14.3		)	14.3			(14.3		)
Net increase (decrease) in cash and cash equivalents		—			230			21.4			(9.0		)	—			242.4
																				Net actuarial loss	—		—		(3.2		)	(3.0		)	3			(3.2		)
Cash and cash equivalents at beginning of period		—			—			2.1			27.7			—			29.8
																				Total other comprehensive income (loss), net of tax	—		—		(17.5		)	(17.3		)	17.3			(17.5		)
Cash and cash equivalents at end of period		$	—		$	230		$	23.5		$	18.7		$	—		$	272.2
																				Total comprehensive income	$	—	$	—	$	89.6		$	(12.2	)	$	12.2		$	89.6
		Nine Months Ended September 30, 2013
(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated				Year Ended December 31, 2013
Cash provided by operating activities		$	—		$	—		$	175		$	3.7		$	—		$	178.7		(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
																				Cash provided by operating activities	$	—	$	—	$	268.2		$	12.9		$	—		$	281.1
Cash used in investing activities		—			—			(37.2		)	(3.9		)	—			(41.1		)
																				Cash used in investing activities	—		—		(37.0		)	(6.7		)	—			(43.7		)
Financing activities:
Excess tax benefit from stock-based compensation		—			—			5.5			—			—			5.5			Financing activities:
																				Excess tax benefit from stock-based compensation	—		—		5.8			—			—			5.8
Net cash distribution to CBS		—			—			(143.3		)	4.7			—			(138.6		)
																				Net cash (distribution to)/contribution from CBS	—		—		(244.4		)	11.8			—			(232.6		)
Cash used in financing activities		—			—			(137.8		)	4.7			—			(133.1		)
																				Other	—		—		—			(0.2		)	—			(0.2		)
Effect of exchange rate on cash and cash equivalents		—			—			—			(0.6		)	—			(0.6		)
																				Cash used in financing activities	—		—		(238.6		)	11.6			—			(227.0		)
Net increase (decrease) in cash and cash equivalents		—			—			—			3.9			—			3.9
																				Effect of exchange rate on cash and cash equivalents	—		—		—			(0.8		)	—			(0.8		)
Cash and cash equivalents at beginning of period		—			—			9.5			10.7			—			20.2
																				Net increase (decrease) in cash and cash equivalents	—		—		(7.4		)	17			—			9.6
Cash and cash equivalents at end of period		$	—		$	—		$	9.5		$	14.6		$	—		$	24.1
																				Cash and cash equivalents at beginning of period	—		—		9.5			10.7			—			20.2
																				Cash and cash equivalents at end of period	$	—	$	—	$	2.1		$	27.7		$	—		$	29.8
																					Year Ended December 31, 2012
																				(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
																				Cash provided by operating activities	$	—	$	—	$	277.3		$	28.6		$	—		$	305.9
																				Cash used in investing activities	—		—		(42.5		)	(5.6		)	—			(48.1		)
																				Financing activities:
																				Excess tax benefit from stock-based compensation	—		—		2.9			—			—			2.9
																				Net cash distribution to CBS	—		—		(238.2		)	(41.5		)	—			(279.7		)
																				Other	—		—		—			(0.2		)	—			(0.2		)
																				Cash used in financing activities	—		—		(235.3		)	(41.7		)	—			(277.0		)
																				Effect of exchange rate on cash and cash equivalents	—		—		—			1.8			—			1.8
																				Net increase (decrease) in cash and cash equivalents	—		—		(0.5		)	(16.9		)	—			(17.4		)
																				Cash and cash equivalents at beginning of period	—		—		10			27.6			—			37.6
																				Cash and cash equivalents at end of period	$	—	$	—	$	9.5		$	10.7		$	—		$	20.2
																					Year Ended December 31, 2011
																				(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
																				Cash provided by operating activities	$	—	$	—	$	284.3		$	55.8		$	—		$	340.1
																				Cash used in investing activities	—		—		(43.4		)	(7.3		)	—			(50.7		)
																				Financing activities:
																				Excess tax benefit from stock-based compensation	—		—		2.3			—			—			2.3
																				Net cash distribution to CBS	—		—		(235.3		)	(34.1		)	—			(269.4		)
																				Other	—		—		—			(0.2		)	—			(0.2		)
																				Cash used in financing activities	—		—		(233.0		)	(34.3		)	—			(267.3		)
																				Effect of exchange rate on cash and cash equivalents	—		—		—			(3.5		)	—			(3.5		)
																				Net increase (decrease) in cash and cash equivalents	—		—		7.9			10.7			—			18.6
																				Cash and cash equivalents at beginning of period	—		—		2.1			16.9			—			19
																				Cash and cash equivalents at end of period	$	—	$	—	$	10		$	27.6		$	—		$	37.6

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Accounts (Notes)	12 Months Ended
	Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]
Schedule II	SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS
	(In millions)
	Col. A	Col. B		Col. C						Col. D		Col. E
	Description	Balance at		Balance		Charged to		Charged		Deductions		Balance at
		Beginning		Acquired through		Costs and		to Other				End of
		of Period		Acquisitions		Expenses		Accounts(a)				Period
	Allowance for doubtful accounts:
	Year ended December 31, 2013	$	19.3	$	—	$	0.4	$	—	$	4	$	15.7
	Year ended December 31, 2012	$	22.4	$	—	$	3.1	$	0.2	$	6.4	$	19.3
	Year ended December 31, 2011	$	29.6	$	—	$	3	$	—	$	10.2	$	22.4
	Valuation allowance on deferred tax assets:
	Year ended December 31, 2013	$	8	$	—	$	3	$	—	$	0.9	$	10.1
	Year ended December 31, 2012	$	7.5	$	—	$	0.7	$	—	$	0.2	$	8
	Year ended December 31, 2011	$	6.3	$	—	$	1.3	$	—	$	0.1	$	7.5

Schedule_III_Schedule_of_Real_

Schedule III - Schedule of Real Estate and Accumulated Depreciation (Notes)	12 Months Ended
	Dec. 31, 2013
SEC Schedule III, Real Estate and Accumulated Depreciation Disclosure [Abstract]
Schedule III	SCHEDULE III – SCHEDULE OF REAL ESTATE AND
	ACCUMULATED DEPRECIATION
	AT DECEMBER 31, 2013
	(Dollars in millions)
	Description (1)		Encumbrances		Initial		Cost	Gross			Accumulated			Construction	Acquisition	Useful
					Cost		Capitalized	Carrying			Depreciation			Date	Date	Lives
							Subsequent	Amount at
							to	December 31,
							Acquisition	2013 (3)
	United States -		—		(2)		(2)	$	1,266.60		$	(768.0	)	Various	Various	5 to 20 years
	45,094 displays
	Canada - 6,054 displays		—		(2)		(2)	348.7			(258.3		)	Various	Various	5 to 20 years
	Mexico - 4,657 displays		—		(2)		(2)	33.1			(20.5		)	Various	Various	5 to 20 years
	Argentina - 585 displays		—		(2)		(2)	1.9			(0.6		)	Various	Various	5 to 20 years
	Brazil - 771 displays		—		(2)		(2)	5.7			(0.9		)	Various	Various	5 to 20 years
	Uruguay - 156 displays		—		(2)		(2)	2			(1.1		)	Various	Various	5 to 20 years
	Chile - 890 displays		—		(2)		(2)	4.3			(3.3		)	Various	Various	5 to 20 years
								$	1,662.30		$	(1,052.7	)
	______________________
	-1	No single asset exceeded 5% of the total gross carrying amount at December 31, 2013.
	-2	This information is omitted as it would be impracticable to compile on a site-by-site basis.
	-3	Includes sites under construction.
	The following table summarizes the activity for the Company’s real estate assets, which consist of advertising displays, and the related accumulated depreciation.
		2013			2012			2011
	Gross real estate assets:
	Balance at the beginning of the year	$	1,655.90		$	1,627.10		$	1,607.30
	Additions for construction of / improvements to structures	50.6			47			43.9
	Assets sold or written-off	(14.9		)	(32.3		)	(8.9		)
	Foreign exchange	(29.3		)	14.1			(15.2		)
	Balance at the end of the year	$	1,662.30		$	1,655.90		$	1,627.10
	Accumulated depreciation:
	Balance at the beginning of the year	$	990		$	911		$	827.1
	Depreciation	97.5			98.8			101.3
	Foreign exchange	(21.1		)	9.9			(10.2		)
	Assets sold or written-off	(13.7		)	(29.7		)	(7.2		)
	Balance at the end of the year	$	1,052.70		$	990		$	911

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Use of Estimates	The preparation of our financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates, judgments and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amount of revenues and expenses during the reporting period. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.	Use of Estimates—The preparation of the Company’s combined consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates, judgments, and assumptions that affect the amounts reported in the combined consolidated financial statements and accompanying notes. The Company bases its estimates on historical experience and various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates.
Cash and Cash Equivalents		Cash and Cash Equivalents—Cash and cash equivalents consist of cash on hand and short-term (maturities of three months or less at the date of purchase) highly liquid investments. Prior to the Formation Borrowings (See Note 14), the Company carried minimal cash on hand as it participated in CBS’s centralized cash management system. On January 31, 2014, at the time of the Formation Borrowings, such participation ceased.
Receivables		Receivables—Receivables consist primarily of trade receivables from customers, net of advertising agency commissions, and are stated net of an allowance for doubtful accounts. The provision for doubtful accounts is estimated based on historical bad debt experience, the aging of accounts receivable, industry trends and economic indicators, as well as recent payment history for specific customers.
Property and Equipment		Property and Equipment—Property and equipment is stated at cost. Depreciation is computed using the straight-line method over the estimated useful lives as follows:
		Buildings and improvements	20 to 40 years
		Advertising structures	5 to 20 years
		Furniture, equipment and other	3 to 10 years
		For advertising structures associated with a contract, the assets are depreciated over the shorter of the contract term or useful life. Maintenance and repair costs to maintain property and equipment in their original operating condition are charged to expense as incurred. Improvements or additions that extend the useful life of the assets are capitalized. When an asset is retired or otherwise disposed of, the associated cost and accumulated depreciation are removed and the resulting gain or loss is recognized.
Business Combinations and Asset Acquisitions		Business Combinations and Asset Acquisitions—The Company routinely acquires out-of-home advertising assets, including advertising structures and permits and leasehold agreements. The Company determines the accounting for these transactions by first evaluating whether the assets acquired and liabilities assumed, if any, constitute a business using the guidelines in the Financial Accounting Standards Board (“FASB”) guidance for business combinations. If the assets acquired and liabilities assumed constitute a business, the purchase price is allocated to the tangible and identifiable intangible net assets acquired based on their estimated fair values with the excess of the purchase price over those estimated fair values recorded as goodwill. If the acquired assets do not constitute a business, the Company allocates the purchase price to the individual tangible and intangible assets acquired based on their relative fair values.
Impairment or Disposal of Long-Lived Assets		Impairment of Long-Lived Assets—Long-lived assets are assessed for impairment whenever there is an indication that the carrying amount of the asset may not be recoverable. Recoverability of these assets is determined by comparing the forecasted undiscounted cash flows generated by those assets to the respective asset’s carrying value. The amount of impairment loss, if any, will be measured by the difference between the net carrying value and the estimated fair value of the asset and recognized as a noncash charge.
Goodwill and Intangible Assets		Goodwill and Intangible Assets—Goodwill is allocated to various reporting units. Each of the Company’s segments consists of two reporting units. Intangible assets, which primarily consist of acquired permits and leasehold agreements and franchise agreements, are amortized by the straight-line method over their estimated useful lives, which range from five to 40 years. Goodwill is not amortized but is tested at the reporting-unit level annually for impairment and between annual tests if events occur or circumstances change that would more likely than not reduce the fair value below its carrying amount. If the carrying value of goodwill exceeds its fair value, an impairment loss is recognized as a noncash charge.
Revenue Recognition		Revenue Recognition—The Company’s revenues are primarily derived from providing space on advertising displays for local, regional and national advertisements. Contracts with customers generally cover periods ranging from four weeks to twelve months and are generally billed every four weeks. Revenues from billboard displays are recognized as rental income on a straight-line basis over the contract term. Transit and other revenues are recognized as earned, which is typically ratably over the contract period. For space provided to advertisers through the use of an advertising agency whose commission is calculated based on a stated percentage of gross billing revenues, revenues are reported net of agency commissions.
		Deferred revenues primarily consist of revenues paid in advance of being earned.
		Revenues derived from a single contract that contains multiple site locations are allocated based on the relative fair value of each delivered item and recognized in accordance with the applicable revenue recognition criteria for the specific unit of accounting.
Concentration of Credit Risk		Concentration of Credit Risk—In the opinion of management, credit risk is limited due to the large number of customers and advertising agencies utilized. The Company performs credit evaluations on its customers and agencies and believes that the allowances for doubtful accounts are adequate.
Billboard Property Lease and Transit Franchise Expense		Billboard Property Lease and Transit Franchise Expenses—The Company’s billboards are primarily located on leased real property. Lease agreements are negotiated for varying terms ranging from one month to multiple years, most of which provide renewal options. Lease costs consist of a fixed monthly amount and certain lease agreements also include contingent rent based on the revenues the Company generates from the leased site. Property leases are generally paid in advance for periods ranging from one to twelve months. The fixed component of lease costs is expensed evenly over the contract term, and contingent rent is expensed as it becomes probable, which is consistent with when the related revenues are recognized.
		Transit franchise agreements generally provide for payment to the municipality or transit operator of the greater of a percentage of the revenues that the Company generates under the related transit contract and a specified guaranteed minimum payment. The costs which are determined based on a percentage of revenues are expensed as incurred when the related revenues are recognized, and the minimum guarantee is expensed over the contract term.
Direct Lease Acquisition Costs		Direct Lease Acquisition Costs—Variable commissions directly associated with billboard revenues are amortized on a straight-line basis over the related customer lease term, which generally ranges from four weeks to one year. Amortization of direct lease acquisition costs is presented within amortization expense in the accompanying Combined Consolidated Statements of Operations.
Foreign Currency Transactions and Translations Policy		Foreign Currency Translation and Transactions—The assets and liabilities of foreign subsidiaries are translated at exchange rates in effect at the balance sheet date, while results of operations are translated at average exchange rates for the respective periods. The resulting translation gains and losses are included as a component of invested equity in accumulated other comprehensive loss. Foreign currency transaction gains and losses are included in “Other income (expense), net” in the Combined Consolidated Statements of Operations.
Income Taxes	As a REIT, we must distribute to our stockholders, for the tax year commencing July 17, 2014, and ending December 31, 2014, at least 90% of our REIT taxable income, determined without regard to the deduction for dividends paid and excluding net capital gain. To the extent that we satisfy the 90% distribution requirement, but distribute less than 100% of our taxable income, we will be subject to U.S. federal corporate income tax on the undistributed income. In addition, we are subject to a 4% nondeductible excise tax on the amount, if any, by which our distributions in any calendar year are less than a minimum amount specified under U.S. federal income tax laws. We intend to distribute net income to our stockholders in a manner to satisfy the REIT 90% distribution requirement and to avoid the 4% nondeductible excise tax.	Income Taxes—Income taxes are accounted for under the asset and liability method of accounting. Deferred income tax assets and liabilities are recognized for the estimated future tax effects of temporary differences between the financial statement carrying amounts and their respective tax basis. Deferred tax assets are reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax assets will not be realized. The Company’s effective tax rate represents federal, state, local and foreign taxes, each calculated separately based on each jurisdiction’s earnings before income taxes and equity in earnings of investee companies.
		The Company’s income taxes as presented herein, including the provision for income taxes, deferred tax assets and liabilities, and income tax payments are calculated on a separate tax return basis, even though the Company’s U.S. operating results are included in the consolidated federal, and certain state and local income tax returns of CBS. CBS manages its tax position for the benefit of the entire portfolio of its businesses and, as such, the assumptions, methodologies and calculations made for purposes of determining the Company’s tax provision, taxes paid and related tax accounts in the combined consolidated financial statements herein may differ from those made by CBS and, in addition, are not necessarily reflective of the tax strategies that the Company would have followed as a separate stand-alone company.
Asset Retirement Obligation		Asset Retirement Obligation—An asset retirement obligation is established for the estimated future obligation, upon termination or nonrenewal of a lease, associated with removing structures from the leased property and, when required by the contract, the cost to return the leased property to its original condition. These obligations are recorded at their present value in the period in which the liability is incurred and are capitalized as part of the related assets’ carrying value. Accretion of the liability is recognized in operating expenses and the capitalized cost is depreciated over the expected useful life of the related asset.
Share-based Compensation		Stock-based Compensation—CBS issued stock options and restricted stock units (“RSUs”) for CBS Class B Common Stock to certain employees of the Company under its equity incentive plans. CBS measures the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of the award. The cost is recognized over the vesting period during which an employee is required to provide service in exchange for the award.
Subsequent Events		Subsequent Events—The Company performed an evaluation of subsequent events through February 18, 2014, which is the date the financial statements were available to be issued.
Misclassification Correction	We have revised the previously reported condensed consolidated Statement of Cash Flows for the nine months ended September 30, 2013. In prior periods, non-cash purchases of property and equipment were previously included within capital expenditures. The revision increased Net cash used in investing activities and increased Net cash provided by operating activities by $13.8 million for the nine months ended September 30, 2013. We do not believe that these misclassifications were material to the previously reported interim or annual financial statements. The above adjustments had no effect on previously reported Statements of Operations, Statements of Financial Position or Statements of Invested Equity/Stockholders' Equity. The impacted prior periods will be revised as they are presented in future filings.	We have revised the previously reported condensed consolidated Statement of Cash Flows for the years ended December 31, 2013, 2012 and 2011. Historically, non-cash purchases of property and equipment were previously included within capital expenditures. The revision increased Net cash used in investing activities and increased Net cash provided by operating activities by $2.7 million for the year ended December 31, 2013, and decreased Net cash used in investing activities and decreased Net cash provided by operating activities by $5.4 million, and $2.0 million for the years ended December 31, 2012 and 2011, respectively. We do not believe that these misclassifications were material to the previously reported interim or annual financial statements. The above adjustments had no effect on previously reported Statements of Operations, Statements of Financial Position or Statements of Invested Equity/Stockholders' Equity.We have revised the previously reported condensed consolidated Statement of Cash Flows for the years ended December 31, 2013, 2012 and 2011. Historically, non-cash purchases of property and equipment were previously included within capital expenditures. The revision increased Net cash used in investing activities and increased Net cash provided by operating activities by $2.7 million for the year ended December 31, 2013, and decreased Net cash used in investing activities and decreased Net cash provided by operating activities by $5.4 million, and $2.0 million for the years ended December 31, 2012 and 2011, respectively. We do not believe that these misclassifications were material to the previously reported interim or annual financial statements. The above adjustments had no effect on previously reported Statements of Operations, Statements of Financial Position or Statements of Invested Equity/Stockholders' Equity.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	9 Months Ended						12 Months Ended
	Sep. 30, 2014						Dec. 31, 2013
Accounting Policies [Abstract]
Property and Equipment	The table below presents the balances of major classes of assets and accumulated depreciation.						Depreciation is computed using the straight-line method over the estimated useful lives as follows:
			As of				Buildings and improvements	20 to 40 years
	(in millions)	Estimated Useful Lives	September 30,		December 31,		Advertising structures	5 to 20 years
			2014		2013		Furniture, equipment and other	3 to 10 years
	Land		$	88.4	$	88.6	The table below presents the balances of major classes of assets and accumulated depreciation.
	Building and improvements	20 to 40 years	47.5		45
							At December 31,	2013		2012
	Advertising structures	5 to 20 years	1,662.40		1,662.30
							Land	$	88.6	$	87.8
	Furniture, equipment and other	3 to 10 years	76.1		77.2
							Buildings and improvements	45		45.7
	Construction in progress		15.7		18.9
							Advertising structures	1,662.30		1,655.90
			1,890.10		1,892.00
							Furniture, equipment and other	77.2		76.3
	Less: accumulated depreciation		1,185.70		1,136.60
							Construction in progress	18.9		13.5
	Property and equipment, net		$	704.4	$	755.4
								1,892.00		1,879.20
							Less accumulated depreciation	1,136.60		1,071.30
							Property and equipment, net	$	755.4	$	807.9

Property_and_Equipment_Tables

Property and Equipment (Tables)	9 Months Ended						12 Months Ended
	Sep. 30, 2014						Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Property and Equipment	The table below presents the balances of major classes of assets and accumulated depreciation.						Depreciation is computed using the straight-line method over the estimated useful lives as follows:
			As of				Buildings and improvements	20 to 40 years
	(in millions)	Estimated Useful Lives	September 30,		December 31,		Advertising structures	5 to 20 years
			2014		2013		Furniture, equipment and other	3 to 10 years
	Land		$	88.4	$	88.6	The table below presents the balances of major classes of assets and accumulated depreciation.
	Building and improvements	20 to 40 years	47.5		45
							At December 31,	2013		2012
	Advertising structures	5 to 20 years	1,662.40		1,662.30
							Land	$	88.6	$	87.8
	Furniture, equipment and other	3 to 10 years	76.1		77.2
							Buildings and improvements	45		45.7
	Construction in progress		15.7		18.9
							Advertising structures	1,662.30		1,655.90
			1,890.10		1,892.00
							Furniture, equipment and other	77.2		76.3
	Less: accumulated depreciation		1,185.70		1,136.60
							Construction in progress	18.9		13.5
	Property and equipment, net		$	704.4	$	755.4
								1,892.00		1,879.20
							Less accumulated depreciation	1,136.60		1,071.30
							Property and equipment, net	$	755.4	$	807.9

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	9 Months Ended								12 Months Ended
	Sep. 30, 2014								Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill									For the years ended December 31, 2013 and 2012, the changes in the book value of goodwill by segment were as follows:
										United States			International			Total
									At December 31, 2011	$	1,758.00		$	114.3		$	1,872.30
									Currency translation adjustments	—			4.9			4.9
									At December 31, 2012	1,758.00			119.2			1,877.20
									Currency translation adjustments	—			(5.1		)	(5.1		)
									Dispositions	(6.4		)	—			(6.4		)
									At December 31, 2013	$	1,751.60		$	114.1		$	1,865.70
Schedule of Finite-Lived Intangible Assets	Our identifiable intangible assets consist of the following:								The Company’s identifiable intangible assets consist of the following:
	(in millions)	Gross		Accumulated Amortization			Net		At December 31, 2013	Gross			Accumulated			Net
	As of September 30, 2014:												Amortization
	Permits and leasehold agreements	$	876	$	(681.0	)	$	195	Permits and leasehold agreements	$	880.6		$	(659.0	)	$	221.6
	Franchise agreements	442.1		(317.9		)	124.2		Franchise agreements	462.4			(320.7		)	141.7
	Other intangible assets	2.1		(1.2		)	0.9		Other intangible assets	2.1			(1.0		)	1.1
	Total intangible assets	$	1,320.20	$	(1,000.1	)	$	320.1	Total intangible assets	$	1,345.10		$	(980.7	)	$	364.4
	As of December 31, 2013:
	Permits and leasehold agreements	$	880.6	$	(659.0	)	$	221.6	At December 31, 2012	Gross			Accumulated			Net
													Amortization
	Franchise agreements	462.4		(320.7		)	141.7		Permits and leasehold agreements	$	875.7		$	(625.5	)	$	250.2
	Other intangible assets	2.1		(1.0		)	1.1		Franchise agreements	476.9			(309.0		)	167.9
	Total intangible assets	$	1,345.10	$	(980.7	)	$	364.4	Other intangible assets	15.7			(13.8		)	1.9
									Total intangible assets	$	1,368.30		$	(948.3	)	$	420
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense									The Company expects its aggregate annual amortization expense for intangible assets, before considering the impact of future direct lease acquisition costs, for each of the years 2014 through 2018, to be as follows:
										2014			2015			2016			2017		2018
									Amortization expense	$	57.1		$	55.2		$	50.1		$	27.9	$	21

Asset_Retirement_Obligation_Ta

Asset Retirement Obligation (Tables)	9 Months Ended				12 Months Ended
	Sep. 30, 2014				Dec. 31, 2013
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Change in Asset Retirement Obligation	The following table sets forth the change in the asset retirement obligations associated with our advertising structures located on leased properties. The obligation is calculated based on the assumption that all of our advertising structures will be removed within the next 50 years. The estimated annual costs to dismantle and remove the structures upon the termination or non-renewal of our leases are consistent with our historical experience.				The following table sets forth the change in the asset retirement obligations associated with the Company’s advertising structures located on leased properties. The obligation is calculated based on the assumption that all of the Company’s advertising structures will be removed within the next 50 years. The estimated annual costs to dismantle and remove the structures upon the termination or nonrenewal of its leases are consistent with the Company’s historical experience. During the last several years, the Company has primarily invested in upgrading certain of its existing structures to digital formats and therefore has not had significant additions to its portfolio of properties.
	(in millions)				At December 31, 2011	$	29.3
	As of December 31, 2013	$	31.7
					Accretion expense	1.8
	Accretion expense	1.7
					Liabilities settled	(1.0		)
	Additions	0.2			Foreign currency translation adjustments	0.5
	Liabilities settled	(0.8		)	At December 31, 2012	30.6
	Foreign currency translation adjustments	(0.5		)
	As of September 30, 2014	$	32.3		Accretion expense	2.2
					Liabilities settled	(0.9		)
					Foreign currency translation adjustments	(0.2		)
					At December 31, 2013	$	31.7

LongTerm_Debt_Tables

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]
Schedule of long-term debt	Long-term debt consists of the following:
		As of
	(in millions, except percentages)	September 30,			December 31,
		2014			2013
	Term loan, due 2021	$	798.2		$	—
	Senior unsecured notes:
	5.250% senior unsecured notes, due 2022	400			—
	5.625% senior unsecured notes, due 2024	400			—
	Total senior unsecured notes	800			—
	Total long-term debt	$	1,598.20		$	—
	Weighted average cost of debt	4.2		%	—		%

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	9 Months Ended										12 Months Ended
	Sep. 30, 2014										Dec. 31, 2013
Accumulated Other Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)											The following table presents the changes in the components of accumulated other comprehensive income (loss).
	(in millions)	Cumulative Translation Adjustments			Net Actuarial Gain (Loss)			Accumulated Other Comprehensive Income (Loss)
	As of December 31, 2013	$	(69.2	)	$	(5.9	)	$	(75.1	)		Cumulative			Net			Accumulated
	Other comprehensive income before reclassifications	(3.1		)	—			(3.1		)		Translation			Actuarial			Other
												Adjustments			Gain			Comprehensive
	Amortization of actuarial losses reclassified to net income	—			0.2			0.2							(Loss)			Income (Loss)
											At December 31, 2010	$	(51.0	)	$	(7.1	)	$	(58.1	)
	Deferred tax rate adjustment	—			(1.2		)	(1.2		)	Other comprehensive loss	(14.3		)	(3.2		)	(17.5		)
											At December 31, 2011	(65.3		)	(10.3		)	(75.6		)
	Total other comprehensive income, net of tax	(3.1		)	(1.0		)	(4.1		)	Other comprehensive income (loss)	11			(1.4		)	9.6
	As of September 30, 2014	$	(72.3	)	$	(6.9	)	$	(79.2	)
											At December 31, 2012	(54.3		)	(11.7		)	(66.0		)
	As of December 31, 2012	$	(54.3	)	$	(11.7	)	$	(66.0	)	Other comprehensive income (loss) before reclassifications	(14.9		)	5.2			(9.7		)
	Other comprehensive income before reclassifications	(12.3		)	—			(12.3		)
											Amortization of actuarial losses reclassified to net income (a)	—			0.6			0.6
	Amortization of actuarial losses reclassified to net income	—			0.4			0.4
											Other comprehensive income (loss)	(14.9		)	5.8			(9.1		)
	Total other comprehensive income (loss), net of tax	(12.3		)	0.4			(11.9		)
											At December 31, 2013	$	(69.2	)	$	(5.9	)	$	(75.1	)
	As of September 30, 2013	$	(66.6	)	$	(11.3	)	$	(77.9	)
											(a)	See Note 11 for additional details of items reclassified from accumulated other comprehensive income to net income.

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended															12 Months Ended
	Sep. 30, 2014															Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based compensation expense	The following table summarizes our stock-based compensation expense for the nine months ended September 30, 2014 and 2013.															The following table summarizes the Company’s stock-based compensation expense for the years ended December 31, 2013, 2012 and 2011.
						Nine Months Ended										Year Ended December 31,	2013				2012				2011
						September 30,										RSUs	$	6.8			$	5.2			$	4.7
	(in millions)					2014				2013
	RSUs and PRSUs					$	9			$	5.4					Stock options	0.7				0.5				0.3
	Stock options					1.9				0.4						Stock-based compensation expense, before income taxes	7.5				5.7				5
	Stock-based compensation expense, before income taxes					10.9				5.8						Tax benefit	(3.0		)		(2.3		)		(2.0		)
																Stock-based compensation expense, net of tax	$	4.5			$	3.4			$	3
	Tax benefit					(2.8		)		(2.4		)
	Stock-based compensation expense, net of tax					$	8.1			$	3.4
Activity of RSUs and PRSUs issued to our employees	The following table summarizes the activity of the RSUs and PRSUs issued to our employees.															The following table summarizes the activity of CBS’s RSUs issued to employees of the Company.
			CBS RSUs						Outfront RSUs								RSUs			Weighted Average
			Activity		Weighted Average Per Share Grant Date Fair Market Value				Activity			Weighted Average Per Share Grant Date Fair Market Value		RSU and PRSU Dividend Equivalents						Grant Date Fair Value
	Non-vested as of December 31, 2013		472,490		$	32.09										Non-vested at December 31, 2012	665,282			$	19.65
	Employee transfers and grants		11,875		34.66											Granted	190,484			$	47.26
	Vested		(157,723	)	22.51											Vested	(366,273	)		$	17.43
	Forfeited		(2,909	)	37.67											Forfeited	(17,003	)		$	31.06
	Non-vested before conversion		323,733		36.8
																Non-vested at December 31, 2013	472,490			$	32.09
	CBS RSUs converted to Outfront RSUs		(256,172	)	37.77
	Non-vested Outfront RSUs converted from CBS RSUs								561,021			$	17.24
	Non-vested CBS RSUs not converted to Outfront RSUs(a)		67,561		33.16
	Granted:
	RSUs								478,311			29.59
	PRSUs								168,468			29.7
	Dividend equivalents													10,032
	Vested:
	RSUs		(67,561	)	33.16				(5,848	)		25.91
	PRSUs								(6,955	)		25.88
	Forfeitures:
	RSUs								(27,965	)		24.39
	PRSUs								(15,289	)		26.39
	Dividend equivalents													(2	)
	Non-vested as of September 30, 2014		—		—				1,151,743			23.78		10,030
	(a)	Reflects CBS RSUs which vested in April 2014.
Weighted average assumptions for Black-Scholes pricing model																Compensation expense for stock options is determined based on the grant date fair value of the award using the Black-Scholes options-pricing model with the following weighted average assumptions:
																	2013			2012			2011
																Expected dividend yield	1.38	%		2	%		2	%
																Expected stock price volatility	35	%		40.2	%		41.16	%
																Risk-free interest rate	1.2	%		1.01	%		2.34	%
																Expected term of options (years)	5			5.02			5.06
Activity of CBS's stock options issued to our employees	The following table summarizes the activity of CBS’ stock options issued to our employees.															The following table summarizes the Company’s stock option activity under the CBS equity incentive plans.
			CBS		CBS				Outfront			Outfront Weighted Average Exercise Price					Stock			Weighted Average
			Stock Options		Weighted Average Exercise Price				Stock Options								Options			Exercise Price
	Outstanding as of December 31, 2013		399,581		$	29.3										Outstanding at December 31, 2012	584,494			$	22.01
	Exercised		(123,260	)	22.04											Granted	101,611			$	49.64
	Forfeited or expired		(38,523	)	30.75											Exercised	(213,102	)		$	18.88
	CBS stock options converted to Outfront stock options		(219,741	)	33.27											Forfeited or Expired	(73,422	)		$	29.69
	Outstanding Outfront stock options converted from CBS stock options								409,207			$	17.87			Outstanding at December 31, 2013	399,581			$	29.3
	Exercised								(2,426	)		14.71				Exercisable at December 31, 2013	184,215			$	21.41
	Forfeited or expired								(16,170	)		23.08
	Outstanding as of September 30, 2014		18,057		27.38				390,611			17.67
	Exercisable as of September 30, 2014		18,057		27.38				166,234			12.29
Stock option exercises information																The following table summarizes other information relating to stock option exercises during the years ended December 31, 2013, 2012 and 2011.
																Year Ended December 31,	2013				2012				2011
																Cash paid to CBS by employees of the Company for stock option exercises	$	4			$	6.5			$	0.8
																Tax benefit of stock option exercises	$	2.5			$	0.8			$	0.9
																Intrinsic value of stock option exercises	$	6.1			$	1.9			$	2.1
Stock options outstanding and exercisable by price																The following table summarizes information concerning outstanding and exercisable stock options to purchase CBS Class B Common Stock under the CBS equity incentive plans at December 31, 2013.
																	Outstanding									Exercisable
																Range of	Number			Remaining		Weighted				Number of		Weighted
																Exercise Price	of			Contractual		Average				Options		Average
																	Options			Life (Years)		Exercise						Exercise
																						Price						Price
																$5 to 9.99	47,081			3.15		$	5.2			47,081		$	5.2
																$10 to 19.99	42,036			4.16		$	13.43			16,179		$	13.43
																$20 to 29.99	154,985			4.22		$	26.99			67,087		$	27
																$30 to 39.99	53,868			0.18		$	31.03			53,868		$	31.03
																$40 to 49.99	53,592			7.12		$	43.21			—		$	—
																$50 to 59.99	48,019			7.72		$	56.81			—		$	—
																	399,581									184,215

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended									12 Months Ended
	Sep. 30, 2014									Dec. 31, 2013
Income Tax Disclosure [Abstract]
U.S. and foreign components of earnings (loss) from continuing operations before income taxes and equity in earnings (loss) of investee companies										The U.S. and foreign components of income before income taxes and equity in earnings of investee companies were as follows:
										Year Ended December 31,	2013			2012			2011
										United States	$	239.8		$	201.9		$	178.6
										Foreign	(2.2		)	(1.7		)	14.6
										Total	$	237.6		$	200.2		$	193.2
Income tax provision components	The difference between income taxes expected at the U.S. federal statutory income tax rate of 35% and the provision for income taxes is summarized as follows:									The components of the provision for income taxes are as follows:
					Nine Months Ended					Year Ended December 31,	2013			2012			2011
					September 30,					Current:
	(in millions)				2014			2013		Federal	$	85.1		$	71.8		$	32.5
	Taxes on income at U.S. statutory rate				$	21.2		$	56.7
										State and local	21.8			18.9			10.5
	State and local taxes, net of federal tax benefit				4.2			9.9
										Foreign	5.2			4.9			12
	Effect of foreign operations				2.2			1.7
											112.1			95.6			55
	Reversal of deferred tax liability				(232.3		)	—
										Deferred	(15.5		)	(6.6		)	32.8
	Other, net				1.8			2.2
										Provision for income taxes	$	96.6		$	89		$	87.8
	Provision for income taxes				$	(202.9	)	$	70.5
Reconciliation to U.S. federal statutory income tax rate										The difference between income taxes expected at the U.S. federal statutory income tax rate of 35% and the provision for income taxes is summarized as follows:
										Year Ended December 31,	2013			2012			2011
										Taxes on income at U.S. statutory rate	$	83.2		$	70.1		$	67.6
										State and local taxes, net of federal tax benefit	7.6			13.4			13.1
										Effect of foreign operations	4			2.2			3.4
										Audit settlements	—			—			3.8
										Other, net (a)	1.8			3.3			(0.1		)
										Provision for income taxes	$	96.6		$	89		$	87.8
										(a)	For 2012, other primarily reflects a charge related to the Company’s domestic production deduction.
Components of deferred income tax assets and liabilities										The following table is a summary of the components of deferred income tax assets and liabilities.
										At December 31,	2013			2012
										Deferred income tax assets:
										Provision for expenses and losses	$	31.3		$	35.4
										Postretirement and other employee benefits	9.9			12.7
										Tax credit and loss carryforwards	14.6			13.7
										Other	0.1			1.9
										Total deferred income tax assets	55.9			63.7
										Valuation allowance	(10.1		)	(8.0		)
										Deferred income tax assets, net	45.8			55.7
										Deferred income tax liabilities:
										Property, equipment and intangible assets	(309.3		)	(340.5		)
										Other	(0.5		)	—
										Total deferred income tax liabilities	(309.8		)	(340.5		)
										Deferred income tax liabilities, net	$	(264.0	)	$	(284.8	)
Schedule of reserve for uncertain tax positions	The following table sets forth the change in the reserve for uncertain tax positions, excluding related accrued interest and penalties.									The following table sets forth the change in the reserve for uncertain tax positions, excluding related accrued interest and penalties.
	(in millions)									At January 1, 2011	$	1.9
	As of December 31, 2013	$	4
										Additions for current year tax positions	3.5
	Additions for current year tax positions	0.1
										At December 31, 2011	5.4
	Reductions for prior year tax positions	(2.9		)
	As of September 30, 2014	$	1.2							Additions for current year tax positions	3.8
										Reductions for prior year tax positions	(4.3		)
										At December 31, 2012	4.9
										Additions for current year tax positions	0.2
										Reductions for prior year tax positions	(1.1		)
										At December 31, 2013	$	4

Retirement_Benefits_Tables

Retirement Benefits (Tables)	9 Months Ended								12 Months Ended
	Sep. 30, 2014								Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Schedule of Change in Benefit Obligation									The following table sets forth the change in benefit obligation for the Company’s pension plans.
										2013				2012
									Change in benefit obligation:
									Benefit obligation, beginning of year	$	52.7			$	46.8
									Service cost	1.7				1.5
									Interest cost	2				2.2
									Actuarial (gain) loss	(5.1		)		2.7
									Benefits paid	(1.6		)		(2.2		)
									Cumulative translation adjustments	(3.7		)		1.7
									Benefit obligation, end of year	$	46			$	52.7
Schedule of Changes in Fair Value of Plan Assets									The following table sets forth the change in plan assets for the Company’s pension plans.
										2013				2012
									Change in plan assets:
									Fair value of plan assets, beginning of year	$	40.1			$	34.2
									Actual return on plan assets	4.5				2.8
									Employer contributions	3.8				4.1
									Benefits paid	(1.6		)		(2.2		)
									Cumulative translation adjustments	(3.1		)		1.2
									Fair value of plan assets, end of year	$	43.7			$	40.1
Schedule of Net Funded Status									The funded status of pension benefit obligations and the related amounts recognized on the Combined Consolidated Balance Sheets were as follows:
									At December 31,	2013				2012
									Funded status, end of year	$	(2.3	)		$	(12.6	)
									Amounts recognized on Combined Consolidated Balance Sheets:
									Other noncurrent liabilities	$	(2.3	)		$	(12.6	)
									Net amounts recognized	$	(2.3	)		$	(12.6	)
Schedule of Net Periodic Benefit Cost Not yet Recognized									The following amounts were recognized in accumulated other comprehensive loss on the Combined Consolidated Balance Sheets.
									At December 31,	2013				2012
									Net actuarial loss	$	(10.2	)		$	(19.3	)
									Deferred income taxes	4.3				7.6
									Net amount recognized in accumulated other comprehensive loss	$	(5.9	)		$	(11.7	)
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets									The information for the pension plans with an accumulated benefit obligation in excess of plan assets is set forth below.
									At December 31,	2013				2012
									Projected benefit obligation	$	2			$	52.7
									Accumulated benefit obligation	$	1.9			$	46.5
									Fair value of plan assets	$	1.8			$	40.1
Schedule of Net Benefit Costs	The following table presents the components of net periodic pension cost and amounts recognized in other comprehensive income (loss) for our pension plans:								The following tables present the components of net periodic pension cost and amounts recognized in other comprehensive income (loss).
			Nine Months Ended						Year Ended December 31,	2013				2012				2011
			September 30,
	(in millions)		2014			2013			Components of net periodic pension cost:
	Components of net periodic pension cost:								Service cost	$	1.7			$	1.5			$	1.3
	Service cost		$	1.1		$	1.3
									Interest cost	2				2.2				2.2
	Interest cost		1.9			1.5
									Expected return on plan assets	(2.4		)		(2.1		)		(2.2		)
	Expected return on plan assets		(2.1		)	(1.8		)	Amortization of actuarial losses	1				0.9				0.4
	Amortization of actuarial losses(a)		0.3			0.8
									Net periodic pension cost	$	2.3			$	2.5			$	1.7
	Net periodic pension cost		$	1.2		$	1.8
	(a)	Reflects amounts reclassified from accumulated other comprehensive income (loss) to net income.
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss)
									Year Ended December 31,	2013
									Other comprehensive income (loss):
									Actuarial gains	$	7.2
									Amortization of actuarial losses (a)	1
									Cumulative translation adjustments	0.9
										9.1
									Deferred income taxes	(3.3		)
									Recognized in other comprehensive loss, net of tax	$	5.8
									(a)	Reflects amounts reclassified from accumulated other comprehensive income (loss) to net income.
Schedule of Assumptions Used									Estimated net actuarial losses related to the defined benefit pension plans of approximately $.4 million, will be amortized from accumulated other comprehensive loss into net periodic pension costs in 2014.
										2013			2012
									Weighted average assumptions used to determine benefit obligations at December 31:
									Discount rate	5	%		4	%
									Rate of compensation increase	3	%		3	%
									Weighted average assumptions used to determine net periodic cost for the
									year ended December 31:
									Discount rate	4	%		4.5	%
									Expected long-term return on plan assets	6	%		6.2	%
									Rate of compensation increase	3	%		3	%
Schedule of Allocation of Plan Assets									The following tables set forth the Company’s pension plan assets measured at fair value on a recurring basis at December 31, 2013 and 2012. These assets have been categorized according to the three-level fair value hierarchy established by the FASB which prioritizes the inputs used in measuring fair value. Level 1 is based on quoted prices for the asset in active markets. Level 2 is based on inputs that are observable other than quoted market prices in active markets, such as quoted prices for the asset in inactive markets or quoted prices for similar assets. Level 3 is based on unobservable inputs that market participants would use in pricing the asset.
									At December 31, 2013	Level 1				Level 2				Level 3			Total
									Cash and cash equivalents (a)	$	—			$	2.6			$	—		$	2.6
									Fixed income securities:
									Government related securities	1.4				6.3				—			7.7
									Corporate bonds (b)	—				9.6				—			9.6
									Equity securities: (c)
									U.S. equity	4.9				2.6				—			7.5
									International equity	—				16.2				—			16.2
									Other	—				0.1				—			0.1
									Total assets	$	6.3			$	37.4			$	—		$	43.7
									At December 31, 2012	Level 1				Level 2				Level 3			Total
									Cash and cash equivalents (a)	$	0.1			$	1.9			$	—		$	2
									Fixed income securities:
									Government related securities	2.1				6.8				—			8.9
									Corporate bonds (b)	—				9.1				—			9.1
									Equity securities: (c)
									U.S. equity	3.8				2				—			5.8
									International equity	—				14.2				—			14.2
									Other	—				0.1				—			0.1
									Total assets	$	6			$	34.1			$	—		$	40.1
									(a)	Assets categorized as Level 2 reflect investments in money market funds.
									(b)	Securities of diverse industries, substantially all investment grade.
									(c)	Assets categorized as Level 2 reflect investments in common collective funds.
Schedule of Expected Benefit Payments									The estimated future benefit payments for pension plans are as follows:
									2014		2015		2016		2017		2018		2019-2023
									$1.30		$1.30		$1.40		$1.50		$1.70		$13.10

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares
			Nine Months Ended
			September 30,
	(in millions)		2014		2013
	Net income		$	279.1	$	93.5
	Weighted average shares for basic EPS		112.3		112.3
	Dilutive potential shares from grants of RSUs, PRSUs and stock options(a)		0.5		0.5
	Weighted average shares for diluted EPS		112.8		112.8
	(a)	The potential impact of an aggregate 0.1 million granted RSUs, PRSUs and stock options for the nine months ended September 30, 2014, was antidilutive.

Commitment_and_Contingencies_t

Commitment and Contingencies table (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Contractual Obligation, Fiscal Year Maturity Schedule	At December 31, 2013, minimum rental payments under noncancellable operating leases with terms in excess of one year and guaranteed minimum franchise payments are as follows:
		Operating		Guaranteed
		Leases		Minimum
				Franchise Payments
	2014	$	89.7	$	150.8
	2015	84.2		97.2
	2016	73		22.7
	2017	59.8		14.7
	2018	51.8		7.2
	2019 and thereafter	315.5		38.7
	Total minimum payments	$	674	$	331.3

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended										12 Months Ended
	Sep. 30, 2014										Dec. 31, 2013
Segment Reporting [Abstract]
Reconciliation of Revenue from Segments to Consolidated	The following tables set forth our financial performance by segment. We manage our operations through two segments—U.S. and International.										The following tables set forth the Company’s financial performance by segment. The Company manages its operations through two segments—United States and International.
					Nine Months Ended						Year Ended December 31,	2013			2012			2011
					September 30,
	(in millions)				2014			2013			Revenues:
	Revenues:										United States	$	1,130.10		$	1,098.60		$	1,051.50
	U.S.				$	842.4		$	827.6
											International	163.9			186			225.6
	International				116.4			122.5
											Total revenues	$	1,294.00		$	1,284.60		$	1,277.10
	Total revenues				$	958.8		$	950.1
Adjusted OIBDA by Segment and Reconciliation to Consolidated Net Income											The Company presents operating income (loss) before depreciation and amortization (“OIBDA”), net gain (loss) on dispositions, stock-based compensation and restructuring charges (“Adjusted OIBDA”) as the primary measure of profit and loss for its operating segments in accordance with FASB guidance for segment reporting. The Company believes the presentation of Adjusted OIBDA is relevant and useful for users because it allows users to view segment performance in a manner similar to the primary method used by the Company’s management and enhances their ability to understand the Company’s operating performance.
					Nine Months Ended
					September 30,						Year Ended December 31,	2013			2012			2011
	(in millions)				2014			2013
	Net income				$	279.1		$	93.5		Adjusted OIBDA:
											United States	$	406.4		$	385.4		$	364.7
	(Benefit) provision for income taxes				(202.9		)	70.5
											International	29.1			30.5			57.2
	Equity in earnings of investee companies, net of tax				(1.4		)	(1.9		)
	Interest expense (income), net				57.3			—			Corporate	(20.7		)	(7.5		)	(7.6		)
											Total Adjusted OIBDA	414.8			408.4			414.3
	Other (income) expense, net				0.5			—
											Restructuring charges	—			(2.5		)	(3.0		)
	Operating income				132.6			162.1
											Net gain (loss) on dispositions	27.3			(2.2		)	(2.0		)
	Restructuring charges(a)				6.2			—
											Depreciation	(104.5		)	(105.9		)	(109.0		)
	Acquisition costs(a)				1.4			—			Amortization	(91.3		)	(90.9		)	(102.9		)
											Stock-based compensation(a)	(7.5		)	(5.7		)	(5.0		)
	Net gain on dispositions				(1.4		)	(9.8		)	Operating income	238.8			201.2			192.4
	Depreciation and amortization				146.6			146.5
											Other income (expense), net	(1.2		)	(1.0		)	0.8
	Stock-based compensation(a)				7.4			5.8
											Income before income taxes and equity in earnings of investee companies	237.6			200.2			193.2
	Total Adjusted OIBDA				$	292.8		$	304.6
											Provision for income taxes	(96.6		)	(89.0		)	(87.8		)
											Equity in earnings of investee companies, net of tax	2.5			2.2			1.7
	Adjusted OIBDA:
	U.S.				$	293		$	300.2		Net income	$	143.5		$	113.4		$	107.1
	International				16.9			20
											(a)	Stock-based compensation is classified as a Corporate expense.
	Corporate				(17.1		)	(15.6		)
	Total Adjusted OIBDA				$	292.8		$	304.6
	(a)	Restructuring charges (including stock-based compensation of $3.5 million), costs related to the Acquisition and stock-based compensation are classified as Corporate expense.
Schedule of Revenue from External Customers by Geographic Area
											Year Ended December 31,	2013			2012			2011
											Revenues: (a)
											United States	$	1,130.10		$	1,098.60		$	1,051.50
											Canada	84.7			99.2			138.1
											Latin America	79.2			86.8			87.5
											Total revenues	$	1,294.00		$	1,284.60		$	1,277.10
											(a)	Revenues classifications are based on customers’ locations.
											At December 31,	2013			2012
											Long-lived assets: (a)
											United States	$	2,768.50		$	2,782.70
											Canada	138.1			193.7
											Latin America	107.6			159.3
											Total long-lived assets	$	3,014.20		$	3,135.70
Long-lived Assets by Geographic Area
											At December 31,	2013			2012
											Long-lived assets: (a)
											United States	$	2,768.50		$	2,782.70
											Canada	138.1			193.7
											Latin America	107.6			159.3
											Total long-lived assets	$	3,014.20		$	3,135.70
											(a)	Reflects total assets less current assets, investments and noncurrent deferred tax assets.
Tabular Disclosure by Reportable Segments
					Nine Months Ended						Year Ended December 31,	2013			2012			2011
					September 30,
	(in millions)				2014			2013			Operating income (loss):
	Operating income (loss):										United States	$	267.1		$	216.4		$	192.2
	U.S.				$	168.5		$	185.4
											International	(0.1		)	(2.0		)	12.8
	International				(3.8		)	(1.9		)
	Corporate				(32.1		)	(21.4		)	Corporate	(28.2		)	(13.2		)	(12.6		)
	Total operating income				$	132.6		$	162.1		Total operating income	$	238.8		$	201.2		$	192.4
	Net (gain) loss on dispositions:
	U.S.				$	(1.3	)	$	(10.0	)	Year Ended December 31,	2013			2012			2011
	International				(0.1		)	0.2
											Depreciation and amortization:
	Total gain on dispositions				$	(1.4	)	$	(9.8	)	United States	$	166.8		$	165.6		$	168.2
	Depreciation and amortization:										International	29			31.2			43.7
	U.S.				$	125.8		$	124.8
											Total depreciation and amortization	$	195.8		$	196.8		$	211.9
	International				20.8			21.7
	Total depreciation and amortization				$	146.6		$	146.5
											Year Ended December 31,	2013			2012			2011
	Capital expenditures:										Capital expenditures:
	U.S.				$	37.4		$	37.1		United States	$	54.1		$	42.5		$	36.8
	International				6.2			4.4			International	6.8			5.7			6.8
	Total capital expenditures				$	43.6		$	41.5		Total capital expenditures	$	60.9		$	48.2		$	43.6
Reconciliation of Assets from Segment to Consolidated
			As of								At December 31,	2013			2012
	(in millions)		September 30, 2014		December 31,
					2013						Assets:
	Assets:										United States	$	3,027.60		$	3,114.40
	U.S.		$	2,967.00	$	3,027.60
											International	327.9			350.5
	International		297.3		327.9
											Total assets	$	3,355.50		$	3,464.90
	Corporate		258.5		—
	Total assets		$	3,522.80	$	3,355.50

Subsequent_Events_Tables

Subsequent Events (Tables)	9 Months Ended							12 Months Ended
	Sep. 30, 2014							Dec. 31, 2013
Subsequent Event [Line Items]
Schedule of long-term debt	Long-term debt consists of the following:
		As of
	(in millions, except percentages)	September 30,			December 31,
		2014			2013
	Term loan, due 2021	$	798.2		$	—
	Senior unsecured notes:
	5.250% senior unsecured notes, due 2022	400			—
	5.625% senior unsecured notes, due 2024	400			—
	Total senior unsecured notes	800			—
	Total long-term debt	$	1,598.20		$	—
	Weighted average cost of debt	4.2		%	—		%
Subsequent Event
Subsequent Event [Line Items]
Schedule of long-term debt								On January 31, 2014, the Company incurred long-term debt of $1.6 billion as follows:
									At
									31-Jan-14
								Term Loan, due 2021, net of discount	$	798
								5.250% Senior Notes due 2022	400
								5.625% Senior Notes due 2024	400
								Total long-term debt	$	1,598.00

Quarterly_Financial_Data_Table

Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]	The Company’s revenues and profits experience seasonality due to seasonal advertising patterns and influences on advertising markets. Typically, the Company’s revenues and profits are highest in the fourth quarter, during the holiday shopping season, and lowest in the first quarter, as advertisers cut back on spending following the holiday shopping season.
	2013	First					Second					Third					Fourth				Total
		Quarter					Quarter					Quarter					Quarter				Year
	Revenues:
	United States	$	245.2				$	285.9				$	296.5				$	302.5			$	1,130.10
	International	34					46.8					41.7					41.4				163.9
	Total revenues	$	279.2				$	332.7				$	338.2				$	343.9			$	1,294.00
	Adjusted OIBDA:
	United States	$	80.1				$	106.5				$	113.6				$	106.2			$	406.4
	International	0.6					11.5					7.9					9.1				29.1
	Corporate	(5.3		)			(4.9		)			(5.4		)			(5.1		)		(20.7		)
	Total Adjusted OIBDA	75.4					113.1					116.1					110.2				414.8
	Net gain (loss) on dispositions	9.8			(a)		(0.1		)			0.1					17.5			(b)	27.3
	Depreciation	(26.0		)			(25.9		)			(26.4		)			(26.2		)		(104.5		)
	Amortization	(22.9		)			(22.7		)			(22.6		)			(23.1		)		(91.3		)
	Stock-based compensation	(1.6		)			(1.6		)			(2.6		)			(1.7		)		(7.5		)
	Total operating income	$	34.7				$	62.8				$	64.6				$	76.7			$	238.8
	Operating income (loss):
	United States	$	48.2				$	65.2				$	72				$	81.7			$	267.1
	International	(6.6		)			4.1					0.6					1.8				(0.1		)
	Corporate	(6.9		)			(6.5		)			(8.0		)			(6.8		)		(28.2		)
	Total operating income	$	34.7				$	62.8				$	64.6				$	76.7			$	238.8
	Net income	$	19.9				$	36.4				$	37.2				$	50			$	143.5
	(a)	During the first quarter of 2013, the Company exchanged most of its billboards in Salt Lake City for billboards in New Jersey resulting in a gain of $9.8 million.
	(b)	During the fourth quarter of 2013, the Company sold 50% of its transit shelter operations in Los Angeles, and the Company and the buyer each subsequently contributed their respective 50% interests in these operations to a 50/50 joint venture they own together. This transaction resulted in a gain of $17.5 million.
	2012	First				Second				Third				Fourth				Total
		Quarter				Quarter				Quarter				Quarter				Year
	Revenues:
	United States	$	244.6			$	281.7			$	284.9			$	287.4			$	1,098.60
	International	41.3				49.7				46.6				48.4				186
	Total revenues	$	285.9			$	331.4			$	331.5			$	335.8			$	1,284.60
	Adjusted OIBDA:
	United States	$	76.7			$	101.9			$	108.1			$	98.7			$	385.4
	International	5.9				13.3				11				0.3				30.5
	Corporate	(1.7		)		(1.6		)		(2.0		)		(2.2		)		(7.5		)
	Total Adjusted OIBDA	80.9				113.6				117.1				96.8				408.4
	Restructuring charges	—				(0.5		)		(1.9		)		(0.1		)		(2.5		)
	Net loss on dispositions	(0.8		)		(0.7		)		(0.3		)		(0.4		)		(2.2		)
	Depreciation	(26.5		)		(26.8		)		(26.7		)		(25.9		)		(105.9		)
	Amortization	(22.1		)		(22.8		)		(23.0		)		(23.0		)		(90.9		)
	Stock-based compensation	(1.3		)		(1.5		)		(1.5		)		(1.4		)		(5.7		)
	Total operating income	$	30.2			$	61.3			$	63.7			$	46			$	201.2
	Operating income (loss):
	United States	$	35.1			$	59.3			$	64.5			$	57.5			$	216.4
	International	(1.9		)		5.1				2.7				(7.9		)		(2.0		)
	Corporate	(3.0		)		(3.1		)		(3.5		)		(3.6		)		(13.2		)
	Total operating income	$	30.2			$	61.3			$	63.7			$	46			$	201.2
	Net income	$	18.7			$	37.2			$	38.7			$	18.8			$	113.4

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Statements (Tables)	9 Months Ended																				12 Months Ended
	Sep. 30, 2014																				Dec. 31, 2013
Condensed Consolidated Financial Statements [Abstract]
Condensed Consolidating Statement of Financial Position
			As of September 30, 2014																			As of December 31, 2013
	(in millions)		Parent Company			Subsidiary Issuer(a)			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Current assets:																				Current assets:
	Cash and cash equivalents		$	—		$	230		$	23.5		$	18.7		$	—		$	272.2		Cash and cash equivalents	$	—	$	—	$	2.1		$	27.7		$	—		$	29.8
	Receivables, less allowances		—			—			140.9			34.7			—			175.6			Receivables, less allowances	—		—		146			32.8			—			178.8
	Other current assets		—			4.1			87.4			21.5			—			113			Other current assets	—		—		89.1			19.5			—			108.6
	Total current assets		—			234.1			251.8			74.9			—			560.8			Total current assets	—		—		237.2			80			—			317.2
	Property and equipment, net		—			—			596.2			108.2			—			704.4			Property and equipment, net	—		—		628.1			127.3			—			755.4
	Goodwill		—			—			1,751.40			109			—			1,860.40			Goodwill	—		—		1,751.60			114.1			—			1,865.70
	Intangible assets		—			—			319.9			0.2			—			320.1			Intangible assets	—		—		364.2			0.2			—			364.4
	Investment in subsidiaries		1,567.00			2,935.50			218.6			—			(4,721.1		)	—			Investment in subsidiaries	—		—		232.9			—			(232.9		)	—
	Other assets		—			23.9			48.1			5.1			—			77.1			Other assets	—		—		46.5			6.3			—			52.8
	Intercompany		—			—			66.1			54.8			(120.9		)	—			Intercompany	—		—		66			55.7			(121.7		)	—
	Total assets		$	1,567.00		$	3,193.50		$	3,252.10		$	352.2		$	(4,842.0	)	$	3,522.80		Total assets	$	—	$	—	$	3,326.50		$	383.6		$	(354.6	)	$	3,355.50
	Total current liabilities		$	—		$	28.3		$	176.4		$	33.2		$	—		$	237.9		Total current liabilities	$	—	$	—	$	168.3		$	43.9		$	—		$	212.2
	Long-term debt		—			1,598.20			—			—			—			1,598.20			Deferred income tax liabilities, net	—		—		259.4			29.1			—			288.5
	Deferred income tax liabilities, net		—			—			(1.1		)	23.9			—			22.8			Asset retirement obligation	—		—		23.1			8.6			—			31.7
	Asset retirement obligation		—			—			23.7			8.6			—			32.3			Other liabilities	—		—		65.6			3.1			—			68.7
	Deficit in excess of investment in subsidiaries		—			—			1,368.50			—			(1,368.5		)	—			Intercompany	—		—		55.7			66			(121.7		)	—
	Other liabilities		—			—			62.8			1.8			—			64.6			Total liabilities	—		—		572.1			150.7			(121.7		)	601.1
	Intercompany		—			—			54.8			66.1			(120.9		)	—			Total invested equity	—		—		2,754.40			232.9			(232.9		)	2,754.40
	Total liabilities		—			1,626.50			1,685.10			133.6			(1,489.4		)	1,955.80			Total liabilities and invested equity	$	—	$	—	$	3,326.50		$	383.6		$	(354.6	)	$	3,355.50
	Total stockholders’ equity		1,567.00			1,567.00			1,567.00			218.6			(3,352.6		)	1,567.00
	Total liabilities and shareholders’ equity		$	1,567.00		$	3,193.50		$	3,252.10		$	352.2		$	(4,842.0	)	$	3,522.80			As of December 31, 2012
																					(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
																					Current assets:
																					Cash and cash equivalents	$	—	$	—	$	9.5		$	10.7		$	—		$	20.2
	(a)	Outfront Media Capital Corporation is a co-issuer finance subsidiary with no assets or liabilities and has not been presented herein.
																					Receivables, less allowances	—		—		138			37.1			—			175.1
			As of December 31, 2013																		Other current assets	—		—		98.2			21.5			—			119.7
	(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Current assets:																				Total current assets	—		—		245.7			69.3			—			315
	Cash and cash equivalents		$	—		$	—		$	2.1		$	27.7		$	—		$	29.8
																					Property and equipment, net	—		—		655.8			152.1			—			807.9
	Receivables, less allowances		—			—			146			32.8			—			178.8
																					Goodwill	—		—		1,758.00			119.2			—			1,877.20
	Other current assets		—			—			89.1			19.5			—			108.6
																					Intangible assets	—		—		419.7			0.3			—			420
	Total current assets		—			—			237.2			80			—			317.2
																					Investment in subsidiaries	—		—		241			—			(241.0		)	—
	Property and equipment, net		—			—			628.1			127.3			—			755.4
																					Other assets	—		—		35.2			9.6			—			44.8
	Goodwill		—			—			1,751.60			114.1			—			1,865.70
																					Intercompany	—		—		65.8			56.5			(122.3		)	—
	Intangible assets		—			—			364.2			0.2			—			364.4
																					Total assets	$	—	$	—	$	3,421.20		$	407		$	(363.3	)	$	3,464.90
	Investment in subsidiaries		—			—			232.9			—			(232.9		)	—
	Other assets		—			—			46.5			6.3			—			52.8			Total current liabilities	$	—	$	—	$	158.7		$	46.9		$	—		$	205.6
	Intercompany		—			—			66			55.7			(121.7		)	—			Deferred income tax liabilities, net	—		—		276.8			37			—			313.8
	Total assets		$	—		$	—		$	3,326.50		$	383.6		$	(354.6	)	$	3,355.50		Asset retirement obligation	—		—		28			2.6			—			30.6
																					Other liabilities	—		—		57.3			13.7			—			71
	Total current liabilities		$	—		$	—		$	168.3		$	43.9		$	—		$	212.2
																					Intercompany	—		—		56.5			65.8			(122.3		)	—
	Deferred income tax liabilities, net		—			—			259.4			29.1			—			288.5
																					Total liabilities	—		—		577.3			166			(122.3		)	621
	Asset retirement obligation		—			—			23.1			8.6			—			31.7
																					Total invested equity	—		—		2,843.90			241			(241.0		)	2,843.90
	Other liabilities		—			—			65.6			3.1			—			68.7
																					Total liabilities and invested equity	$	—	$	—	$	3,421.20		$	407		$	(363.3	)	$	3,464.90
	Intercompany		—			—			55.7			66			(121.7		)	—
	Total liabilities		—			—			572.1			150.7			(121.7		)	601.1
	Total invested equity		—			—			2,754.40			232.9			(232.9		)	2,754.40
	Total liabilities and invested equity		$	—		$	—		$	3,326.50		$	383.6		$	(354.6	)	$	3,355.50
Condensed Consolidating Income Statement of Operations
			Nine Months Ended September 30, 2014																			Year Ended December 31, 2013
	(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Revenues:																				Revenues:
	Billboard		$	—		$	—		$	599.7		$	90.5		$	—		$	690.2		Billboard	$	—	$	—	$	796.6		$	129.1		$	—		$	925.7
	Transit and other		—			—			242.7			25.9			—			268.6			Transit and other	—		—		333.5			34.8			—			368.3
	Total revenues		—			—			842.4			116.4			—			958.8			Total revenues	—		—		1,130.10			163.9			—			1,294.00
	Expenses:																				Expenses:
	Operating		—			—			436.2			76.1			—			512.3			Operating	—		—		584.2			102.7			—			686.9
	Selling, general and administrative		0.9			—			136.8			23.4			—			161.1			Selling, general and administrative	—		—		167.7			32.1			—			199.8
	Restructuring charges		—			—			6.2			—			—			6.2			Net (gain) loss on dispositions	—		—		(27.5		)	0.2			—			(27.3		)
	Acquisition costs		—			—			1.4			—			—			1.4			Depreciation	—		—		80.7			23.8			—			104.5
	Net (gain) loss on dispositions		—			—			(1.3		)	(0.1		)	—			(1.4		)	Amortization	—		—		86.1			5.2			—			91.3
	Depreciation		—			—			62.2			17.1			—			79.3			Total expenses	—		—		891.2			164			—			1,055.20
	Amortization		—			—			63.6			3.7			—			67.3			Operating income	—		—		238.9			(0.1		)	—			238.8
	Total expenses		0.9			—			705.1			120.2			—			826.2			Other income (expenses)	—		—		(0.2		)	(1.0		)	—			(1.2		)
	Operating income		(0.9		)	—			137.3			(3.8		)	—			132.6			Income before income taxes and equity earnings of investee	—		—		238.7			(1.1		)	—			237.6
	Interest expense		—			(57.3		)	(0.1		)	0.1			—			(57.3		)	Provision for income taxes	—		—		(93.3		)	(3.3		)	—			(96.6		)
	Other income (expenses)		—			—			—			(0.5		)	—			(0.5		)	Equity in earnings of investee companies, net of tax	—		—		(1.9		)	—			4.4			2.5
	Income before income taxes and equity earnings of investee		(0.9		)	(57.3		)	137.2			(4.2		)	—			74.8			Net income	$	—	$	—	$	143.5		$	(4.4	)	$	4.4		$	143.5
	Provision for income taxes		—			—			205.2			(2.3		)	—			202.9
																					Net income	$	—	$	—	$	143.5		$	(4.4	)	$	4.4		$	143.5
	Equity in earnings of investee companies, net of tax		280			337.3			(62.4		)	0.4			(553.9		)	1.4
																					Other comprehensive income (loss), net of tax:
	Net income		$	279.1		$	280		$	280		$	(6.1	)	$	(553.9	)	$	279.1		Cumulative translation adjustments	—		—		(14.9		)	(14.9		)	14.9			(14.9		)
																					Net actuarial loss	—		—		5.8			5.6			(5.6		)	5.8
	Net income		$	279.1		$	280		$	280		$	(6.1	)	$	(553.9	)	$	279.1
																					Total other comprehensive income (loss), net of tax	—		—		(9.1		)	(9.3		)	9.3			(9.1		)
	Other comprehensive income (loss), net of tax:
	Cumulative translation adjustments		(3.1		)	(3.1		)	(3.1		)	(3.1		)	9.3			(3.1		)	Total comprehensive income	$	—	$	—	$	134.4		$	(13.7	)	$	13.7		$	134.4
	Net actuarial loss		0.2			0.2			0.2			0.2			(0.6		)	0.2
	Deferred tax rate adjustment		(1.2		)	(1.2		)	(1.2		)	(1.2		)	3.6			(1.2		)		Year Ended December 31, 2012
																					(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Total other comprehensive income (loss), net of tax		(4.1		)	(4.1		)	(4.1		)	(4.1		)	12.3			(4.1		)	Revenues:
																					Billboard	$	—	$	—	$	770.7		$	142.9		$	—		$	913.6
	Total comprehensive income		$	275		$	275.9		$	275.9		$	(10.2	)	$	(541.6	)	$	275
																					Transit and other	—		—		327.9			43.1			—			371
																					Total revenues	—		—		1,098.60			186			—			1,284.60
			Nine Months Ended September 30, 2013
	(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			Expenses:
	Revenues:																				Operating	—		—		577.9			122.2			—			700.1
	Billboard		$	—		$	—		$	589.8		$	96		$	—		$	685.8
																					Selling, general and administrative	—		—		148.5			33.3			—			181.8
	Transit and other		—			—			237.8			26.5			—			264.3
																					Restructuring charges	—		—		1.8			0.7			—			2.5
	Total revenues		—			—			827.6			122.5			—			950.1
																					Net (gain) loss on dispositions	—		—		1.6			0.6			—			2.2
	Expenses:
	Operating		—			—			426.1			78.4			—			504.5			Depreciation	—		—		80.4			25.5			—			105.9
	Selling, general and administrative		—			—			122.7			24.1			—			146.8			Amortization	—		—		85.2			5.7			—			90.9
	Net (gain) loss on dispositions		—			—			(10.0		)	0.2			—			(9.8		)	Total expenses	—		—		895.4			188			—			1,083.40
	Depreciation		—			—			60.5			17.8			—			78.3			Operating income (loss)	—		—		203.2			(2.0		)	—			201.2
	Amortization		—			—			64.3			3.9			—			68.2			Other income (expenses)	—		—		(0.1		)	(0.9		)	—			(1.0		)
	Total expenses		—			—			663.6			124.4			—			788			Income before income taxes and equity earnings of investee	—		—		203.1			(2.9		)	—			200.2
	Operating income (loss)		—			—			164			(1.9		)	—			162.1			Provision for income taxes	—		—		(87.3		)	(1.7		)	—			(89.0		)
	Interest expense		—			—			—			—			—			—			Equity in earnings of investee companies, net of tax	—		—		(2.4		)	—			4.6			2.2
	Other income (expenses)		—			—			(0.1		)	0.1			—			—			Net income	$	—	$	—	$	113.4		$	(4.6	)	$	4.6		$	113.4
	Income before income taxes and equity earnings of investee		—			—			163.9			(1.8		)	—			162.1
																					Net income	$	—	$	—	$	113.4		$	(4.6	)	$	4.6		$	113.4
	Provision for income taxes		—			—			(68.2		)	(2.3		)	—			(70.5		)
																					Other comprehensive income (loss), net of tax:
	Equity in earnings of investee companies, net of tax		—			—			(2.2		)	—			4.1			1.9			Cumulative translation adjustments	—		—		11			11			(11.0		)	11
	Net income		$	—		$	—		$	93.5		$	(4.1	)	$	4.1		$	93.5		Net actuarial loss	—		—		(1.4		)	(1.3		)	1.3			(1.4		)
																					Total other comprehensive income (loss), net of tax	—		—		9.6			9.7			(9.7		)	9.6
Net income		$	—		$	—		$	93.5		$	(4.1	)	$	4.1		$	93.5
																				Total comprehensive income	$	—	$	—	$	123		$	5.1		$	(5.1	)	$	123
Other comprehensive income (loss), net of tax:
Cumulative translation adjustments		—			—			(12.3		)	(12.3		)	12.3			(12.3		)
Net actuarial loss		—			—			0.4			0.4			(0.4		)	0.4
																					Year Ended December 31, 2011
Total other comprehensive income (loss), net of tax		—			—			(11.9		)	(11.9		)	11.9			(11.9		)	(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
																				Revenues:
Total comprehensive income		$	—		$	—		$	81.6		$	(16.0	)	$	16		$	81.6		Billboard	$	—	$	—	$	746.8		$	147.4		$	—		$	894.2
																				Transit and other	—		—		304.7			78.2			—			382.9
																				Total revenues	—		—		1,051.50			225.6			—			1,277.10
																				Expenses:
																				Operating	—		—		554.3			135.1			—			689.4
																				Selling, general and administrative	—		—		145.1			33.3			—			178.4
																				Restructuring charges	—		—		2.2			0.8			—			3
																				Net (gain) loss on dispositions	—		—		2.1			(0.1		)	—			2
																				Depreciation	—		—		81.5			27.5			—			109
																				Amortization	—		—		86.7			16.2			—			102.9
																				Total expenses	—		—		871.9			212.8			—			1,084.70
																				Operating income (loss)	—		—		179.6			12.8			—			192.4
																				Other income (expenses)	—		—		(0.1		)	0.9			—			0.8
																				Income before income taxes and equity earnings of investee	—		—		179.5			13.7			—			193.2
																				Provision for income taxes	—		—		(79.2		)	(8.6		)	—			(87.8		)
																				Equity in earnings of investee companies, net of tax	—		—		6.8			—			(5.1		)	1.7
																				Net income	$	—	$	—	$	107.1		$	5.1		$	(5.1	)	$	107.1
																				Net income	$	—	$	—	$	107.1		$	5.1		$	(5.1	)	$	107.1
																				Other comprehensive income (loss), net of tax:
																				Cumulative translation adjustments	—		—		(14.3		)	(14.3		)	14.3			(14.3		)
																				Net actuarial loss	—		—		(3.2		)	(3.0		)	3			(3.2		)
																				Total other comprehensive income (loss), net of tax	—		—		(17.5		)	(17.3		)	17.3			(17.5		)
																				Total comprehensive income	$	—	$	—	$	89.6		$	(12.2	)	$	12.2		$	89.6
Condensed Condensed Consolidating Statement of Cash Flows
			Nine Months Ended September 30, 2014																			Year Ended December 31, 2013
	(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Cash provided by operating activities		$	(0.9	)	$	(25.6	)	$	213.9		$	(2.9	)	$	—		$	184.5		Cash provided by operating activities	$	—	$	—	$	268.2		$	12.9		$	—		$	281.1
	Cash used in investing activities		—			—			(35.3		)	(6.0		)	—			(41.3		)	Cash used in investing activities	—		—		(37.0		)	(6.7		)	—			(43.7		)
	Financing activities:																				Financing activities:
	Proceeds from IPO		615			—			—			—			—			615			Excess tax benefit from stock-based compensation	—		—		5.8			—			—			5.8
	Proceeds from long-term debt borrowings		—			1,598.00			—			—			—			1,598.00			Net cash (distribution to)/contribution from CBS	—		—		(244.4		)	11.8			—			(232.6		)
	Deferred financing fees		—			(24.8		)	—			—			—			(24.8		)	Other	—		—		—			(0.2		)	—			(0.2		)
	Distribution of debt and IPO proceeds to CBS		(515.0		)	(1,523.8		)	—			—			—			(2,038.8		)	Cash used in financing activities	—		—		(238.6		)	11.6			—			(227.0		)
	Net cash contribution from CBS		—			—			39.8			—			—			39.8			Effect of exchange rate on cash and cash equivalents	—		—		—			(0.8		)	—			(0.8		)
	Dividends		(88.8		)	—			—			—			—			(88.8		)	Net increase (decrease) in cash and cash equivalents	—		—		(7.4		)	17			—			9.6
	Intercompany		(10.3		)	206.2			(197.0		)	1.1			—			—			Cash and cash equivalents at beginning of period	—		—		9.5			10.7			—			20.2
	Cash used in financing activities		0.9			255.6			(157.2		)	1.1			—			100.4			Cash and cash equivalents at end of period	$	—	$	—	$	2.1		$	27.7		$	—		$	29.8
	Effect of exchange rate on cash and cash equivalents		—			—			—			(1.2		)	—			(1.2		)
	Net increase (decrease) in cash and cash equivalents		—			230			21.4			(9.0		)	—			242.4
																						Year Ended December 31, 2012
	Cash and cash equivalents at beginning of period		—			—			2.1			27.7			—			29.8			(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
																					Cash provided by operating activities	$	—	$	—	$	277.3		$	28.6		$	—		$	305.9
	Cash and cash equivalents at end of period		$	—		$	230		$	23.5		$	18.7		$	—		$	272.2
																					Cash used in investing activities	—		—		(42.5		)	(5.6		)	—			(48.1		)
																					Financing activities:
																					Excess tax benefit from stock-based compensation	—		—		2.9			—			—			2.9
			Nine Months Ended September 30, 2013
	(in millions)		Parent Company			Subsidiary Issuer			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			Net cash distribution to CBS	—		—		(238.2		)	(41.5		)	—			(279.7		)
	Cash provided by operating activities		$	—		$	—		$	175		$	3.7		$	—		$	178.7
																					Other	—		—		—			(0.2		)	—			(0.2		)
	Cash used in investing activities		—			—			(37.2		)	(3.9		)	—			(41.1		)
																					Cash used in financing activities	—		—		(235.3		)	(41.7		)	—			(277.0		)
	Financing activities:
	Excess tax benefit from stock-based compensation		—			—			5.5			—			—			5.5			Effect of exchange rate on cash and cash equivalents	—		—		—			1.8			—			1.8
	Net cash distribution to CBS		—			—			(143.3		)	4.7			—			(138.6		)	Net increase (decrease) in cash and cash equivalents	—		—		(0.5		)	(16.9		)	—			(17.4		)
	Cash used in financing activities		—			—			(137.8		)	4.7			—			(133.1		)	Cash and cash equivalents at beginning of period	—		—		10			27.6			—			37.6
	Effect of exchange rate on cash and cash equivalents		—			—			—			(0.6		)	—			(0.6		)	Cash and cash equivalents at end of period	$	—	$	—	$	9.5		$	10.7		$	—		$	20.2
	Net increase (decrease) in cash and cash equivalents		—			—			—			3.9			—			3.9
	Cash and cash equivalents at beginning of period		—			—			9.5			10.7			—			20.2				Year Ended December 31, 2011
																					(in millions)	Parent Company		Subsidiary Issuer		Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Cash and cash equivalents at end of period		$	—		$	—		$	9.5		$	14.6		$	—		$	24.1		Cash provided by operating activities	$	—	$	—	$	284.3		$	55.8		$	—		$	340.1
																					Cash used in investing activities	—		—		(43.4		)	(7.3		)	—			(50.7		)
																					Financing activities:
																					Excess tax benefit from stock-based compensation	—		—		2.3			—			—			2.3
																					Net cash distribution to CBS	—		—		(235.3		)	(34.1		)	—			(269.4		)
																					Other	—		—		—			(0.2		)	—			(0.2		)
																					Cash used in financing activities	—		—		(233.0		)	(34.3		)	—			(267.3		)
																					Effect of exchange rate on cash and cash equivalents	—		—		—			(3.5		)	—			(3.5		)
																					Net increase (decrease) in cash and cash equivalents	—		—		7.9			10.7			—			18.6
																					Cash and cash equivalents at beginning of period	—		—		2.1			16.9			—			19
																					Cash and cash equivalents at end of period	$	—	$	—	$	10		$	27.6		$	—		$	37.6

Description_of_Business_and_Ba1

Description of Business and Basis of Presentation - Narrative (Details) (USD $)

0 Months Ended

9 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Jul. 16, 2014

Jan. 15, 2014

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2014

Dec. 15, 2014

Nov. 20, 2014

Nov. 18, 2014

Oct. 29, 2014

Jan. 31, 2014

Apr. 02, 2014

Mar. 14, 2014

Dec. 31, 2012

Dec. 31, 2011

Nov. 06, 2014

Oct. 01, 2014

Mar. 13, 2014

Dec. 30, 2014

markets

segment

segment

markets

Long-term debt

$1,598,200,000

$0

$0

Common Stock, Outstanding

120,010,462

0

120,000,000

Common Stock, Par Value

$0.01

Stock Issued During Period, Shares, New Issues

100

Number of Largest Markets in Which the Entity Operates, Domestic

25

25

Number of Operating Segments

2

2

Subsequent Event [Line Items]

Approximate Number of Markets in Which the Entity Operates

180

Shares Exchanged by Parent In Tender Offer

97,000,000

% ownership by parent

0.00%

Dividends declared per common share

$0.74

$0

Distribution of net debt proceeds to CBS

2,038,800,000

0

Proceeds from Initial Public Offering Held for Payment Upon Election of REIT Status

100,000,000

Subsequent Event

Long-term debt

1,598,000,000

Subsequent Event [Line Items]

Acquisition cost

15,000,000

690,000,000

Dividends Payable, Date Announced

29-Oct-14

Distributed Earnings

547,700,000

Dividends declared per common share

$0.37

Dividends Payable, Date to be Paid

31-Dec-14

15-Dec-14

Dividends Payable, Date of Record

20-Nov-14

18-Nov-14

Distribution of net debt proceeds to CBS

109,500,000

1,520,000,000

Common Stock

Stockholders' Equity Note, Stock Split, Conversion Ratio

970,000

Common Stock, Outstanding

97,000,000

100

Stock Issued During Period, Shares, New Issues

23,000,000

Common Stock | Subsequent Event

Stockholders' Equity Note, Stock Split, Conversion Ratio

970,000

Common Stock, Outstanding

97,000,000

100

Common Stock, Par Value

0.01

Stock Issued During Period, Shares, New Issues

23,000,000

Subsequent Event [Line Items]

Contingent Stock Dividend

3,000,000

Common Stock | Shares Sold to Underwriter as Part of Total IPO

Stock Issued During Period, Shares, New Issues

3,000,000

Common Stock | Shares Sold to Underwriter as Part of Total IPO | Subsequent Event

Stock Issued During Period, Shares, New Issues

3,000,000

Minimum

Subsequent Event [Line Items]

Approximate Number of Markets in Which the Entity Operates

180

Building and Improvements | Minimum

Property, Plant and Equipment, Useful Life

20 years

20 years

Building and Improvements | Maximum

Property, Plant and Equipment, Useful Life

40 years

40 years

Advertising Structures | Minimum

Property, Plant and Equipment, Useful Life

5 years

5 years

Advertising Structures | Maximum

Property, Plant and Equipment, Useful Life

20 years

20 years

Furniture, Equipment and Other | Minimum

Property, Plant and Equipment, Useful Life

3 years

3 years

Furniture, Equipment and Other | Maximum

Property, Plant and Equipment, Useful Life

10 years

10 years

Bridge Loan [Member]

Subsequent Event [Line Items]

Commitment fee for unused commitments

7,600,000

CBS Corp.

Subsequent Event [Line Items]

Accounts Receivable, Related Parties, Current

300,000

0

CBS Corp. | Subsequent Event

Subsequent Event [Line Items]

Accounts Receivable, Related Parties, Current

9,500,000

Scenario, Forecast [Member] | Minimum

Subsequent Event [Line Items]

% ownership by parent

80.00%

Operating Activities

Prior period misclassification correction

13,800,000

2,700,000

-5,400,000

-2,000,000

Investing Activities

Prior period misclassification correction

$13,800,000

$13,800,000

$2,700,000

($5,400,000)

($2,000,000)

Summary_of_Significant_Account3

Summary of Significant Accounting Policies Property, Plant and Equipment (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Building and Improvements | Minimum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years	20 years
Building and Improvements | Maximum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years	40 years
Advertising Structures | Minimum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years	5 years
Advertising Structures | Maximum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years	20 years
Furniture, Equipment and Other | Minimum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years	3 years
Furniture, Equipment and Other | Maximum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years	10 years

Summary_of_Significant_Account4

Summary of Significant Accounting Policies Narrative (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Summary of Accounting Policies [Line Items]
Customer Billing Term		28 days
Minimum
Summary of Accounting Policies [Line Items]
Customer Contract Term		1 month
Intangible Asset, Useful Life		5 years
Lessee Leasing Arrangements, Operating Leases, Term of Contract		1 month
Lessee Leasing Arrangements, Prepaid Lease Term		1 month
Maximum
Summary of Accounting Policies [Line Items]
Customer Contract Term		12 months
Intangible Asset, Useful Life		40 years
Lessee Leasing Arrangements, Prepaid Lease Term		12 months
Direct Lease Acquisition Cost | Minimum
Summary of Accounting Policies [Line Items]
Intangible Asset, Useful Life	28 days	28 days
Direct Lease Acquisition Cost | Maximum
Summary of Accounting Policies [Line Items]
Intangible Asset, Useful Life	1 year	1 year

Initial_Public_Offering_Narrat

Initial Public Offering - Narrative (Details) (USD $)	0 Months Ended		9 Months Ended
In Millions, except Share data, unless otherwise specified	Apr. 02, 2014	Jan. 15, 2014	Sep. 30, 2014	Sep. 30, 2013
Capital Unit [Line Items]
Proceeds from IPO	$615		$615	$0
Stock Issued During Period, Shares, New Issues		100
Distribution of IPO proceeds to CBS			2,038.80	0
Proceeds from Initial Public Offering Held for Payment Upon Election of REIT Status	100
Common Stock
Capital Unit [Line Items]
Stock Issued During Period, Shares, New Issues	23,000,000
Shares Issued, Price Per Share	$28
Shares Sold to Underwriter as Part of Total IPO | Common Stock
Capital Unit [Line Items]
Stock Issued During Period, Shares, New Issues	3,000,000
IPO Proceeds
Capital Unit [Line Items]
Distribution of IPO proceeds to CBS	$515

Property_and_Equipment_Summary

Property and Equipment - Summary of Property, Plant and Equipment (Details) (USD $)	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Property and Equipment [Line Items]
Property and Equipment	1,890.10	1,892	$1,879.20
Less: accumulated depreciation	1,185.70	1,136.60	1,071.30
Property and equipment, net	704.4	755.4	807.9
Land [Member]
Property and Equipment [Line Items]
Property and Equipment	88.4	88.6	87.8
Building and Improvements
Property and Equipment [Line Items]
Property and Equipment	47.5	45	45.7
Building and Improvements | Minimum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years	20 years
Building and Improvements | Maximum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years	40 years
Advertising Structures
Property and Equipment [Line Items]
Property and Equipment	1,662.40	1,662.30	1,655.90
Advertising Structures | Minimum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years	5 years
Advertising Structures | Maximum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years	20 years
Furniture, Equipment and Other
Property and Equipment [Line Items]
Property and Equipment	76.1	77.2	76.3
Furniture, Equipment and Other | Minimum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years	3 years
Furniture, Equipment and Other | Maximum
Property and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years	10 years
Construction in progress [Member]
Property and Equipment [Line Items]
Property and Equipment	15.7	18.9	$13.50

Property_and_Equipment_Narrati

Property and Equipment - Narrative (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Property, Plant and Equipment [Abstract]

Depreciation

$26.20

$26.40

$25.90

$26

$25.90

$26.70

$26.80

$26.50

$79.30

$78.30

$104.50

$105.90

$109

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets Schedule of Goodwill (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$1,877.20	$1,872.30	$1,860.40
Currency translation adjustments	-5.1	4.9
Dispositions	-6.4
Goodwill, Ending Balance	1,865.70	1,877.20	1,860.40
UNITED STATES
Goodwill [Roll Forward]
Goodwill, Beginning Balance	1,758	1,758
Currency translation adjustments	0	0
Dispositions	-6.4
Goodwill, Ending Balance	1,751.60	1,758
International
Goodwill [Roll Forward]
Goodwill, Beginning Balance	119.2	114.3
Currency translation adjustments	-5.1	4.9
Dispositions	0
Goodwill, Ending Balance	$114.10	$119.20

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets Schedule of Finite-Lived Intangible Assets (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]
Gross	$1,320.20	$1,345.10	$1,368.30
Accumulated Amortization	-1,000.10	-980.7	-948.3
Net	320.1	364.4	420
Permits and leasehold agreements
Finite-Lived Intangible Assets [Line Items]
Gross	876	880.6	875.7
Accumulated Amortization	-681	-659	-625.5
Net	195	221.6	250.2
Franchise agreements
Finite-Lived Intangible Assets [Line Items]
Gross	442.1	462.4	476.9
Accumulated Amortization	-317.9	-320.7	-309
Net	124.2	141.7	167.9
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross	2.1	2.1	15.7
Accumulated Amortization	-1.2	-1	-13.8
Net	$0.90	$1.10	$1.90

Goodwill_and_Other_Intangible_4

Goodwill and Other Intangible Assets Schedule of Finite Lived Future Amortization Expense (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]
2014	$57.10
2015	55.2
2016	50.1
2017	27.9
2018	$21

Goodwill_and_Other_Intangible_5

Goodwill and Other Intangible Assets Narrative (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Finite-Lived Intangible Assets [Line Items]

Amortization

$23.10

$22.60

$22.70

$22.90

$23

$23

$22.80

$22.10

$67.30

$68.20

$91.30

$90.90

$102.90

Amortization of direct lease acquisition costs

24.2

22.7

30.9

31.1

32.1

Minimum

Finite-Lived Intangible Assets [Line Items]

Intangible Asset, Useful Life

5 years

Maximum

Finite-Lived Intangible Assets [Line Items]

Intangible Asset, Useful Life

40 years

UNITED STATES

Finite-Lived Intangible Assets [Line Items]

Goodwill, Impaired, Accumulated Impairment Loss

7,190

7,220

7,190

7,220

7,220

International

Finite-Lived Intangible Assets [Line Items]

Goodwill, Impaired, Accumulated Impairment Loss

$489.20

$489.20

$489.20

$489.20

$489.20

Direct Lease Acquisition Cost | Minimum

Finite-Lived Intangible Assets [Line Items]

Intangible Asset, Useful Life

28 days

28 days

Direct Lease Acquisition Cost | Maximum

Finite-Lived Intangible Assets [Line Items]

Intangible Asset, Useful Life

1 year

1 year

Asset_Retirement_Obligation_Na

Asset Retirement Obligation - Narrative (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation Expected Term	50 years	50 years
Asset Retirement Obligations, Description	The obligation is calculated based on the assumption that all of our advertising structures will be removed within the next 50 years.	The obligation is calculated based on the assumption that all of the Company’s advertising structures will be removed within the next 50 years

Asset_Retirement_Obligation_Sc

Asset Retirement Obligation - Schedule of Change in Asset Retirement Obligation (Details) (USD $)	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning of period	$31.70	$30.60	$29.30
Accretion expense	1.7	2.2	1.8
Additions	0.2
Liabilities settled	-0.8	-0.9	-1
Foreign currency translation adjustments	-0.5	-0.2	0.5
End of period	$32.30	$31.70	$30.60

Related_Party_Transactions_Nar

Related Party Transactions - Narrative (Details) (USD $)	3 Months Ended										9 Months Ended		12 Months Ended						0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013		Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		Mar. 31, 2016	Dec. 31, 2014	Dec. 30, 2014
	joint_venture										joint_venture		joint_venture
Related Party Transaction [Line Items]
Revenues	$343.90		$338.20	$332.70	$279.20		$335.80	$331.50	$331.40	$285.90	$958.80	$950.10	$1,294	[1]	$1,284.60	[1]	$1,277.10	[1]
Equity Method Investment, Number of Investments	2										2		2
Equity Method Investments	24.1						11.3				22.6		24.1		11.3
Percentage of Company's ownership in group of assets sold	50.00%
Proceeds from dispositions	17.5										2.3	11.1	28.7		0.5		0.8
Percentage of Company's ownership in group of assets contributed to a joint venture	50.00%
Net gain (loss) on dispositions	17.5	[2]	0.1	-0.1	9.8	[3]	-0.4	-0.3	-0.7	-0.8	1.4	9.8	27.3		-2.2		-2
CBS Corp.
Related Party Transaction [Line Items]
Selling, General and Administrative Expenses from Transactions with Related Party											9.5	48.7	60.9		47.7		46.2
Accounts Receivable, Related Parties, Current	0										0.3		0
Accounts Payable, Related Parties, Current	0										1		0
Revenues											14.5
Revenue from Related Parties											7.7	12.3	14.9		16.6		20.1
Other Related Parties
Related Party Transaction [Line Items]
Revenues											6
Revenue from Related Parties											4.3	5.6	9.3		9.4		11.4
Corporate Joint Venture [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage	50.00%										50.00%		50.00%
Subsequent Event | CBS Corp.
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties, Current																					$9.50
Licensing Agreement, Corporate Name, Term of Agreement After the Split-Off																				31-Dec-14
Licensing Agreement, Mark and Logo, Term of Agreement After the Split-Off																			31-Mar-16
[1]	Revenues classifications are based on customers’ locations.
[2]	During the fourth quarter of 2013, the Company sold 50% of its transit shelter operations in Los Angeles, and the Company and the buyer each subsequently contributed their respective 50% interests in these operations to a 50/50 joint venture they own together. This transaction resulted in a gain of $17.5 million.
[3]	During the first quarter of 2013, the Company exchanged most of its billboards in Salt Lake City for billboards in New Jersey resulting in a gain of $9.8 million.

LongTerm_Debt_Schedule_of_Long

Long-Term Debt - Schedule of Long-Term Debt Instruments (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Long-term debt	$1,598,200,000	$0	$0
Weighted average cost of debt	4.20%	0.00%
Secured Debt | Term loan, due 2021
Debt Instrument [Line Items]
Long-term debt	798,200,000	0
Senior Notes
Debt Instrument [Line Items]
Long-term debt	800,000,000	0
Senior Notes | 5.250% senior unsecured notes, due 2022
Debt Instrument [Line Items]
Long-term debt	400,000,000	0
Senior Notes | 5.625% senior unsecured notes, due 2024
Debt Instrument [Line Items]
Long-term debt	$400,000,000	$0

LongTerm_Debt_Narrative_Detail

Long-Term Debt - Narrative (Details) (USD $)	0 Months Ended	9 Months Ended		3 Months Ended	0 Months Ended
	Jan. 31, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Dec. 31, 2014	Oct. 02, 2014	Dec. 31, 2013	Oct. 01, 2014
Line of Credit Facility [Line Items]
Outstanding letters of credit and surety bonds		$99,300,000		$99,300,000			$78,300,000
Covenant description		The Credit Agreement requires, in connection with the incurrence of certain indebtedness, that we maintain a Consolidated Total Leverage Ratio, which is the ratio of our consolidated total debt to our Consolidated EBITDA for the trailing four consecutive quarters, of no greater than 6.0 to 1.0.
Debt Covenant, Consolidated Total Leverage Ratio		6
Consolidated Total Leverage Ratio		3.9
Debt Instrument [Line Items]
Deferred finance costs		29,300,000		29,300,000
Distribution of net debt proceeds to CBS		2,038,800,000	0
Net proceeds retained from incurrence of debt	50,000,000
Secured Debt | Term loan, due 2021
Debt Instrument [Line Items]
Debt face amount	800,000,000
Maturity date	31-Jan-21
Stated interest rate		2.25%		2.25%
Adjustment to term loan reference rate to arrive at effective rate				plus the greater of the London Interbank Offered Rate (“LIBOR”) or 0.75%
Basis spread on variable rate		0.75%
Interest rate at period end		3.00%		3.00%
Debt discount		1,800,000		1,800,000
Senior Notes | 5.250% senior unsecured notes, due 2022
Debt Instrument [Line Items]
Debt face amount	400,000,000
Maturity date	31-Jan-22
Stated interest rate	5.25%
Allowable early redemption percentage for senior notes		35.00%
Senior Notes | 5.625% senior unsecured notes, due 2024
Debt Instrument [Line Items]
Debt face amount	400,000,000
Maturity date	31-Jan-24
Stated interest rate	5.63%
Allowable early redemption percentage for senior notes		35.00%
Long-term Debt
Debt Instrument [Line Items]
Distribution of net debt proceeds to CBS	1,500,000,000
Fair Value, Inputs, Level 2
Debt Instrument [Line Items]
Long-term debt at fair value		1,600,000,000		1,600,000,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	425,000,000
Credit facility, expiration date	31-Jan-19
Cash adjustment to debt compliance calculation		150,000,000		150,000,000
Commitment fee for unused commitments		1,400,000
Outstanding letters of credit and surety bonds		20,500,000		20,500,000
Covenant description		The Credit Agreement contains certain customary affirmative and negative covenants. As of September 30, 2014, the terms of the Revolving Credit Facility require that as an entity being taxed as a REIT, we are required to maintain a Maximum Consolidated Net Secured Leverage Ratio of no greater than 4.0 to 1.0.
Maximum Consolidated Net Secured Leverage Ratio		1.6
Maximum consolidated net secured coverage ratio, REIT election				4
Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	80,000,000
Subsequent Event
Debt Instrument [Line Items]
Deferred finance costs								10,800,000
Distribution of net debt proceeds to CBS	1,520,000,000				109,500,000
Net proceeds retained from incurrence of debt	50,000,000
Subsequent Event | Secured Debt | Term loan, due 2021
Debt Instrument [Line Items]
Debt face amount	800,000,000
Stated interest rate	2.25%
Adjustment to term loan reference rate to arrive at effective rate	2.25% plus the greater of the London Interbank Offered Rate (“LIBOR”) or 0.75%.
Basis spread on variable rate	0.75%
Interest rate at period end	3.00%
Subsequent Event | Senior Notes | 5.250% senior unsecured notes, due 2022
Debt Instrument [Line Items]
Debt face amount	400,000,000							150,000,000
Maturity date	31-Jan-22
Stated interest rate	5.25%							5.25%
Allowable early redemption percentage for senior notes	35.00%					35.00%
Subsequent Event | Senior Notes | 5.625% senior unsecured notes, due 2024
Debt Instrument [Line Items]
Debt face amount	400,000,000
Maturity date	31-Jan-24
Stated interest rate	5.63%
Allowable early redemption percentage for senior notes	35.00%
Subsequent Event | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	425,000,000
Cash adjustment to debt compliance calculation	150,000,000
Covenant description	The terms of the Revolving Credit Facility require the Company to maintain a maximum consolidated net secured leverage ratio of 3.50 to 1.00, which will be increased to 4.00 to 1.00 if the Company elects to be taxed as a REIT.
Maximum consolidated net secured coverage ratio, REIT election	4
Subsequent Event | Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity	80,000,000
Outstanding letters of credit and surety bonds								$10,200,000

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	($75.10)	($66)	($66)		($75.60)	($58.10)
Other comprehensive income before reclassifications	-3.1	-12.3	-9.7
Amortization of actuarial losses reclassified to net income	0.2	0.4	0.6	[1]
Deferred tax rate adjustment	-1.2	0
Total other comprehensive income (loss), net of tax	-4.1	-11.9	-9.1		9.6	-17.5
Ending balance	-79.2	-77.9	-75.1		-66	-75.6
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	-69.2	-54.3	-54.3		-65.3	-51
Other comprehensive income before reclassifications	-3.1	-12.3	-14.9
Amortization of actuarial losses reclassified to net income	0	0	0	[1]
Deferred tax rate adjustment	0
Total other comprehensive income (loss), net of tax	-3.1	-12.3	-14.9		11	-14.3
Ending balance	-72.3	-66.6	-69.2		-54.3	-65.3
Net Actuarial Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	-5.9	-11.7	-11.7		-10.3	-7.1
Other comprehensive income before reclassifications	0	0	5.2
Amortization of actuarial losses reclassified to net income	0.2	0.4	0.6	[1]
Deferred tax rate adjustment	-1.2
Total other comprehensive income (loss), net of tax	-1	0.4	5.8		-1.4	-3.2
Ending balance	($6.90)	($11.30)	($5.90)		($11.70)	($10.30)
[1]	See Note 11 for additional details of items reclassified from accumulated other comprehensive income to net income.

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income Narrative (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income [Abstract]
Tax benefit (expense) related to actuarial gain (loss) included in other comprehensive income (loss)	($3.30)	$0.30	$2.90

Equity_Narrative_Details

Equity - Narrative (Details) (USD $)

0 Months Ended

9 Months Ended

0 Months Ended

Jul. 16, 2014

Jan. 15, 2014

Sep. 30, 2014

Sep. 30, 2013

Apr. 02, 2014

Mar. 14, 2014

Dec. 31, 2014

Dec. 15, 2014

Nov. 20, 2014

Nov. 18, 2014

Oct. 29, 2014

Jan. 31, 2014

Dec. 31, 2013

Mar. 13, 2014

Dec. 30, 2014

Class of Stock [Line Items]

Stock Issued During Period, Shares, New Issues

100

Common Stock, Issued

120,010,462

120,000,000

0

Common Stock, Outstanding

120,010,462

120,000,000

0

Common Stock, Authorized

450,000,000

0

Common Stock, Par Value

$0.01

Preferred Stock, Shares Authorized

50,000,000

Preferred Stock, Par or Stated Value Per Share

$0.01

Shares Exchanged by Parent In Tender Offer

97,000,000

Preferred Stock, Shares Issued

0

Preferred Stock, Shares Outstanding

0

% ownership by parent

0.00%

Distribution of net debt proceeds to CBS

$2,038,800,000

$0

Proceeds from Initial Public Offering Held for Payment Upon Election of REIT Status

100,000,000

Common Stock

Class of Stock [Line Items]

Stock Issued During Period, Shares, New Issues

23,000,000

Stockholders' Equity Note, Stock Split, Conversion Ratio

970,000

Common Stock, Outstanding

97,000,000

100

Shares Issued, Price Per Share

$28

Shares Sold to Underwriter as Part of Total IPO | Common Stock

Class of Stock [Line Items]

Stock Issued During Period, Shares, New Issues

3,000,000

Subsequent Event

Class of Stock [Line Items]

Dividends Payable, Date of Record

20-Nov-14

18-Nov-14

Dividends Payable, Date Announced

29-Oct-14

Distributed Earnings

547,700,000

Distribution of net debt proceeds to CBS

109,500,000

1,520,000,000

Dividends Payable, Date to be Paid

31-Dec-14

15-Dec-14

Subsequent Event | Common Stock

Class of Stock [Line Items]

Stock Issued During Period, Shares, New Issues

23,000,000

Stockholders' Equity Note, Stock Split, Conversion Ratio

970,000

Common Stock, Outstanding

97,000,000

100

Common Stock, Par Value

0.01

Subsequent Event | Shares Sold to Underwriter as Part of Total IPO | Common Stock

Class of Stock [Line Items]

Stock Issued During Period, Shares, New Issues

3,000,000

CBS Corp.

Class of Stock [Line Items]

Accounts Receivable, Related Parties, Current

300,000

0

CBS Corp. | Subsequent Event

Class of Stock [Line Items]

Accounts Receivable, Related Parties, Current

$9,500,000

Restructuring_Charges_Details

Restructuring Charges (Details) (USD $)	3 Months Ended								9 Months Ended				12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Stock-based compensation	$1.70	$2.60	$1.60	$1.60	$1.40	$1.50	$1.50	$1.30	$10.90		$5.80		$7.50	[1]	$5.70	[1]	$5	[1]
Restructuring reserve	0				1.1				2.5				0		1.1
Restructuring charges					0.1	1.9	0.5	0	6.2	[2]	0	[2]	0		2.5		3
Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Stock-based compensation									$3.50	[2]
[1]	(a)Stock-based compensation is classified as a Corporate expense.
[2]	Restructuring charges (including stock-based compensation of $3.5 million), costs related to the Acquisition and stock-based compensation are classified as Corporate expense.

StockBased_Compensation_Narrat

Stock-Based Compensation - Narrative (Details) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended	9 Months Ended	12 Months Ended		3 Months Ended
In Millions, except Share data, unless otherwise specified	Jul. 16, 2014	Dec. 31, 2013	Mar. 27, 2014	Sep. 30, 2014	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2014	Mar. 18, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangements, Share-based Payment Awards, Options, Conversion Award Ratio	1.9
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term		4 years 4 months 6 days
Share Price		$63.74
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value		$13.80
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term		2 years 10 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value		7.8
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Not yet Recognized, Share-based Awards Other than Options		9.7		20.6
Compensation Cost Not yet Recognized, Period for Recognition		2 years 3 months		2 years 11 months
Conversion of Award Ratio			2.2
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value		16.4			11.4	10.1
Restricted Stock Units (RSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period				3 years			3 years
Restricted Stock Units (RSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period				4 years			4 years
Performance Restricted Stock Units (PRSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Measurement Period Stock-Based Awards				1 year
Performance Restricted Stock Units (PRSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout on Stock-Based Compensation Award (percent)				0.00%
Performance Restricted Stock Units (PRSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout on Stock-Based Compensation Award (percent)				120.00%
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Cost Not yet Recognized, Period for Recognition				2 years 7 months
Compensation Not yet Recognized, Stock Options				0.9
Omnibus Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Available for Grant								8,000,000
Converted from CBS stock options	409,207
Omnibus Stock Incentive Plan | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested Outfront RSUs converted from CBS RSUs			561,021
CBS Corp. Equity and Incentive Plan | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested CBS RSUs converted to Outdoor RSUs			256,172
CBS Corp. Equity and Incentive Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Cost Not yet Recognized, Period for Recognition		3 years
Compensation Not yet Recognized, Stock Options		$1.70
Award Vesting Period		4 years
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Converted Awards, Number	-219,741
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		8 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value		$14.04			$8.83	$7.59

StockBased_Compensation_Schedu

Stock-Based Compensation - Schedule of Allocation of Share-based Compensation Costs by Plan (Details) (USD $)	9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense, before income taxes	$10.90	$5.80	$7.50	$5.70	$5
Tax benefit	-2.8	-2.4	-3	-2.3	-2
Stock-based compensation expense, net of tax	8.1	3.4	4.5	3.4	3
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense, before income taxes			6.8	5.2	4.7
RSUs and PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense, before income taxes	9	5.4
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense, before income taxes	$1.90	$0.40	$0.70	$0.50	$0.30

StockBased_Compensation_Schedu1

Stock-Based Compensation - Schedule of Restricted Stock Units Roll Forward (Details) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 27, 2014	Sep. 30, 2014	Dec. 31, 2013	Mar. 31, 2014
CBS Corp. Equity and Incentive Plan | Restricted Stock Units (RSUs)
RSUs and PRSUs, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Non-Vested, Beginning Balance (USD per share)	$32.09	$36.80	$19.65	$33.16	[1]
Weighted Average Grant Date Fair Value, Grants in Period (USD per share)	$34.66		$47.26
Weighted Average Grant Date Fair Value, Vested (USD per share)	$22.51	$33.16	$17.43
Weighted Average Grant Date Fair Value, Forfeited (USD per share)	$37.67		$31.06
Weighted Average Grant Date Fair Value, Non-Vested, Ending Balance (USD per share)	$36.80	$0	$32.09	$33.16	[1]
Weighted Average Grant Date Fair Value, Converted Awards (USD per share)	$37.77
RSUs and PRSUs, Nonvested, Number of Shares [Roll Forward]
Non-vested as of beginning of period	472,490	323,733	665,282
Employee transfers and grants	11,875		190,484
Vested	-157,723	-67,561	-366,273
Forfeited	-2,909		-17,003
Non-vested of end of period	323,733	0	472,490
CBS RSUs converted to Outfront RSUs	-256,172
CBS RSU's not converted				67,561	[1]
Omnibus Stock Incentive Plan | Restricted Stock Units (RSUs)
RSUs and PRSUs, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Grants in Period (USD per share)		$29.59
Weighted Average Grant Date Fair Value, Vested (USD per share)		$25.91
Weighted Average Grant Date Fair Value, Forfeited (USD per share)		$24.39
Weighted Average Grant Date Fair Value, Converted Awards (USD per share)	$17.24
RSUs and PRSUs, Nonvested, Number of Shares [Roll Forward]
Non-vested Outfront RSUs converted from CBS RSUs	561,021
Employee transfers and grants		478,311
Vested		-5,848
Forfeited		-27,965
Omnibus Stock Incentive Plan | Performance Restricted Stock Units (PRSUs)
RSUs and PRSUs, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Grants in Period (USD per share)		$29.70
Weighted Average Grant Date Fair Value, Vested (USD per share)		$25.88
Weighted Average Grant Date Fair Value, Forfeited (USD per share)		$26.39
RSUs and PRSUs, Nonvested, Number of Shares [Roll Forward]
Employee transfers and grants		168,468
Vested		-6,955
Forfeited		-15,289
Omnibus Stock Incentive Plan | RSUs and PRSUs
RSUs and PRSUs, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Non-Vested, Ending Balance (USD per share)		$23.78
RSUs and PRSUs, Nonvested, Number of Shares [Roll Forward]
Non-vested of end of period		1,151,743
RSUs and PRSUs | Omnibus Stock Incentive Plan
RSUs and PRSUs, Nonvested, Number of Shares [Roll Forward]
Non-vested of end of period		10,030
Dividend equivalents		10,032
Share Based Compensation By Share Based Payment Award Equity Instrument Other Than Options Dividends Forfeited In Period		-2
[1]	Reflects CBS RSUs which vested in April 2014.

StockBased_Compensation_Schedu2

Stock-Based Compensation - Schedule of Stock Options Valuation Assumptions (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	1.38%	2.00%	2.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	35.00%	40.20%	41.16%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.20%	1.01%	2.34%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	5 years	5 years 7 days	5 years 22 days

StockBased_Compensation_Schedu3

Stock-Based Compensation - Schedule of Stock Options Roll Forward (Details) (USD $)	9 Months Ended	12 Months Ended	0 Months Ended	3 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Jul. 16, 2014	Sep. 30, 2014
CBS Corp. Equity and Incentive Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Converted Awards, Number			219,741
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options outstanding, beginning balance	399,581	584,494
Granted		101,611
Exercised	-123,260	-213,102
Forfeited or expired	-38,523	-73,422
Number of options outstanding, ending balance	18,057	399,581		18,057
Exercisable as of September 30, 2014	18,057	184,215		18,057
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price, options outstanding, beginning balance	$29.30	$22.01
Weighted average exercise price, granted		$49.64
Weighted average exercise price, exercised	$22.04	$18.88
Weighted average exercise price, forfeited or expired	$30.75	$29.69
Weighted average exercise price, options outstanding, ending balance	$27.38	$29.30	33.27	$27.38
Weighted average exercise price, options exercisable	$27.38	$21.41		$27.38
Omnibus Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Converted from CBS stock options			409,207
Exercised				-2,426
Forfeited or expired				-16,170
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price, exercised				$14.71
Weighted average exercise price, forfeited or expired				$23.08
Omnibus Stock Incentive Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options outstanding, ending balance	390,611			390,611
Exercisable as of September 30, 2014	166,234			166,234
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted average exercise price, options outstanding, ending balance	$17.67		17.87	$17.67
Weighted average exercise price, options exercisable	$12.29			$12.29

StockBased_Compensation_Schedu4

Stock-Based Compensation - Schedule of Additional Stock Option Information (Details) (CBS Corp. Equity and Incentive Plan, USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit of stock option exercises	$2.50	$0.80	$0.90
Intrinsic value of stock options exercises	6.1	1.9	2.1
CBS Corp.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash paid to CBS by employees of the Company for stock option exercises	$4	$6.50	$0.80

StockBased_Compensation_Schedu5

Stock-Based Compensation Schedule of Options by Exercise Price (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Options, Outstanding	399,581
Number of Options, Exercisable	184,215
CBS Corp. Equity and Incentive Plan | $5 to 9.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$5
Exercise Price Range, Upper Range Limit	$9.99
Number of Options, Outstanding	47,081
Options Outstanding, Remaining Contractual Life (Years)	3 years 1 month 24 days
Options Outstanding, Weighted Average Exercise Price	$5.20
Number of Options, Exercisable	47,081
Options Exercisable, Weighted Average Exercise Price	$5.20
CBS Corp. Equity and Incentive Plan | $10 to 19.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$10
Exercise Price Range, Upper Range Limit	$19.99
Number of Options, Outstanding	42,036
Options Outstanding, Remaining Contractual Life (Years)	4 years 1 month 27 days
Options Outstanding, Weighted Average Exercise Price	$13.43
Number of Options, Exercisable	16,179
Options Exercisable, Weighted Average Exercise Price	$13.43
CBS Corp. Equity and Incentive Plan | $20 to 29.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$20
Exercise Price Range, Upper Range Limit	$29.99
Number of Options, Outstanding	154,985
Options Outstanding, Remaining Contractual Life (Years)	4 years 2 months 19 days
Options Outstanding, Weighted Average Exercise Price	$26.99
Number of Options, Exercisable	67,087
Options Exercisable, Weighted Average Exercise Price	$27
CBS Corp. Equity and Incentive Plan | $30 to 39.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$30
Exercise Price Range, Upper Range Limit	$39.99
Number of Options, Outstanding	53,868
Options Outstanding, Remaining Contractual Life (Years)	2 months 4 days
Options Outstanding, Weighted Average Exercise Price	$31.03
Number of Options, Exercisable	53,868
Options Exercisable, Weighted Average Exercise Price	$31.03
CBS Corp. Equity and Incentive Plan | $40 to 49.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$40
Exercise Price Range, Upper Range Limit	$49.99
Number of Options, Outstanding	53,592
Options Outstanding, Remaining Contractual Life (Years)	7 years 1 month 13 days
Options Outstanding, Weighted Average Exercise Price	$43.21
Number of Options, Exercisable	0
Options Exercisable, Weighted Average Exercise Price	$0
CBS Corp. Equity and Incentive Plan | $50 to 59.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$50
Exercise Price Range, Upper Range Limit	$59.99
Number of Options, Outstanding	48,019
Options Outstanding, Remaining Contractual Life (Years)	7 years 8 months 19 days
Options Outstanding, Weighted Average Exercise Price	$56.81
Number of Options, Exercisable	0
Options Exercisable, Weighted Average Exercise Price	$0

Income_Taxes_Narrative_Details

Income Taxes - Narrative (Details) (USD $)	3 Months Ended	9 Months Ended		12 Months Ended			6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2010
Operating Loss Carryforwards [Line Items]
Cash paid for income taxes		$31.40	$75.30	$112.80	$96.50	$50.90
Unrecognized Tax Benefits	1.2	1.2		4	4.9	5.4		1.9
Operating Loss Carryforwards				47.2
Operating Loss Carryforwards, Not Subject to Expiration				22
Effective income tax rate, excluding noncash benefit from REIT conversion		39.30%	43.50%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	0.8	0.8		3.4
Deferred Tax Benefit Due To REIT Conversion	232.3	232.3
Capital Distribution Per Share	$0.37
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%
Deferred Tax Assets, Valuation Allowance				10.1	8
CBS Corp.
Related Party Transaction [Line Items]
Unrecognized Tax Benefit Transferred to Parent		2.1
Subsequent Event
Operating Loss Carryforwards [Line Items]
Nondeductible Excise Tax Rate							4.00%
Minimum
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date				1-Jan-14
Minimum | Subsequent Event
Operating Loss Carryforwards [Line Items]
Percent Of REIT Taxable Income To Be Distributed							90.00%
Maximum
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date				31-Dec-27
Maximum | Subsequent Event
Operating Loss Carryforwards [Line Items]
Percent Of REIT Taxable Income To Be Distributed							100.00%
Other Assets
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Net, Noncurrent					$2.90

Income_Taxes_Schedule_of_Compe

Income Taxes Schedule of Compenents of Income Tax Expense (Benefit) (Details) (USD $)	9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
United States			$239.80	$201.90	$178.60
Foreign			-2.2	-1.7	14.6
Income before income taxes and equity in earnings of investee companies	74.8	162.1	237.6	200.2	193.2
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal			85.1	71.8	32.5
State and Local			21.8	18.9	10.5
Foreign			5.2	4.9	12
Current Income Tax Expense (Benefit)			112.1	95.6	55
Deferred	-246.4	4.7	-15.5	-6.6	32.8
Provision for income taxes	($202.90)	$70.50	$96.60	$89	$87.80

Income_Taxes_Schedule_of_Effec

Income Taxes Schedule of Effective Income Tax Rate Reconciliation (Details) (USD $)	9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Income Tax Disclosure [Abstract]
Taxes on income at U.S. statutory rate	$21.20	$56.70	$83.20		$70.10		$67.60
State and local taxes, net of federal tax benefit	4.2	9.9	7.6		13.4		13.1
Effect of foreign operations	2.2	1.7	4		2.2		3.4
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount			0		0		3.8
Reversal of deferred tax liability	-232.3	0
Other, net	1.8	2.2	1.8	[1]	3.3	[1]	-0.1	[1]
Provision for income taxes	($202.90)	$70.50	$96.60		$89		$87.80
[1]	(a)For 2012, other primarily reflects a charge related to the Company’s domestic production deduction.

Income_Taxes_Schedule_of_Defer

Income Taxes Schedule of Deferred Tax Asset and Liability (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Deferred Income Tax Assets:
Provision for expenses and losses	$31.30	$35.40
Postretirement and other employee benefits	9.9	12.7
Tax credit and loss carryforwards	14.6	13.7
Other	0.1	1.9
Total deferred income tax assets	55.9	63.7
Valuation allowance	-10.1	-8
Deferred income tax assets, net	45.8	55.7
Deferred Income Tax Liabilities:
Property, equipment and intangible assets	-309.3	-340.5
Other	-0.5	0
Total deferred income tax liabilities	-309.8	-340.5
Deferred income tax liabilities, net	($264)	($284.80)

Income_Taxes_Schedule_of_Unrec

Income Taxes Schedule of Unrecognized Tax Benefits Roll Forward (Details) (USD $)	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning of period	$4	$4.90	$5.40	$1.90
Additions for current year tax positions	0.1	0.2	3.8	3.5
Reductions for prior year tax positions	-2.9	-1.1	-4.3
Unrecognized Tax Benefits, End of period	$1.20	$4	$4.90	$5.40

Retirement_Benefits_Narrative_

Retirement Benefits - Narrative (Details) (USD $)	9 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation		$41.60	$46.50
Estimated amortization from AOCI of net actuarial losses		0.4
Expected Future Benefit Payments, Next Twelve Months		4.1
Multiemployer Plan, Period Contributions		1.6	1.7	1.8
Defined Contribution Plan, employer contributions		3.7	3.4	3.2
Pension Contributions	1.9
Estimated Future Employer Contributions in Current Fiscal Year	$2
Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Plan Asset Allocations		40.00%
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Plan Asset Allocations		54.00%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Pension Plan's interest in Master Trust		1.00%

Retirement_Benefits_Schedule_o

Retirement Benefits - Schedule of Change in Benefit Obligations (Details) (USD $)	9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]
Benefit obligation, beginning of period	$46	$52.70	$52.70	$46.80
Service cost	1.1	1.3	1.7	1.5	1.3
Interest cost	1.9	1.5	2	2.2	2.2
Actuarial gain (loss)			-5.1	2.7
Benefits paid			-1.6	-2.2
Cumulative translation adjustments			-3.7	1.7
Benefit obligation, end of period			$46	$52.70	$46.80

Retirement_Benefits_Schedule_o1

Retirement Benefits Schedule of Changes in Fair Value of Plan Assets (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Fair value of plan assets, beginning of year	$40.10	$34.20
Actual return on plan assets	4.5	2.8
Employer contributions	3.8	4.1
Benefits paid	-1.6	-2.2
Cumulative translation adjustments	-3.1	1.2
Fair value of plan assets, end of year	$43.70	$40.10

Retirement_Benefits_Schedule_o2

Retirement Benefits Schedule of Net Funded Status (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Compensation and Retirement Disclosure [Abstract]
Funded status, end of year	($2.30)	($12.60)
Other noncurrent liabilities	-2.3	-12.6
Net amounts recognized	($2.30)	($12.60)

Retirement_Benefits_Net_Period

Retirement Benefits Net Periodic Benefit Cost Not Yet Recognized (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Compensation and Retirement Disclosure [Abstract]
Net actuarial loss	($10.20)	($19.30)
Deferred income taxes	4.3	7.6
Net amount recognized in accumulated other comprehensive loss	($5.90)	($11.70)

Retirement_Benefits_Accumulate

Retirement Benefits Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Compensation and Retirement Disclosure [Abstract]
Projected Benefit Obligation	$2	$52.70
Accumulated Benefit Obligation	1.9	46.5
Net amount recognized in accumulated other comprehensive loss	$1.80	$40.10

Retirement_Benefits_Schedule_o3

Retirement Benefits - Schedule of Net Benefit Costs (Details) (USD $)	9 Months Ended				12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]
Service cost	$1.10		$1.30		$1.70	$1.50	$1.30
Interest cost	1.9		1.5		2	2.2	2.2
Expected return on plan assets	-2.1		-1.8		-2.4	-2.1	-2.2
Amortization of actuarial losses	0.3	[1]	0.8	[1]	1	0.9	0.4
Net periodic benefit cost	$1.20		$1.80		$2.30	$2.50	$1.70
[1]	Reflects amounts reclassified from accumulated other comprehensive income (loss) to net income.

Retirement_Benefits_Amounts_Re

Retirement Benefits Amounts Recognized in Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Actuarial gains	$7.20
Amortization of actuarial losses	1	[1]
Cumulative translation adjustments	0.9
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	9.1
Deferred income taxes	-3.3
Recognized in other comprehensive loss, net of tax	$5.80
[1]	Reflects amounts reclassified from accumulated other comprehensive income (loss) to net income.

Retirement_Benefits_Defined_Be

Retirement Benefits Defined Benefit Assumptions (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Benefit obligations - Discount Rate	5.00%	4.00%
Rate of Compensation Increase	3.00%	3.00%
Net periodic cost - Discount Rate	4.00%	4.50%
Expected Long-term Return on Assets	6.00%	6.20%
Net periodic cost - Rate of Compensation Increase	3.00%	3.00%

Retirement_Benefits_Schedule_o4

Retirement Benefits Schedule of Allocation of Plan Assets (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
In Millions, unless otherwise specified
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$43.70		$40.10		$34.20
Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.3		6
Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	37.4		34.1
Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.6	[1]	2
Cash and Cash Equivalents | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0.1
Cash and Cash Equivalents | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.6	[1]	1.9	[1]
Cash and Cash Equivalents | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Other Security Investments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.1		0.1
Other Security Investments | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Other Security Investments | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.1		0.1
Other Security Investments | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Fixed Income Securities | Government-Related Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7.7		8.9
Fixed Income Securities | Government-Related Securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1.4		2.1
Fixed Income Securities | Government-Related Securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.3		6.8
Fixed Income Securities | Government-Related Securities | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Fixed Income Securities | Corporate Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	9.6	[2]	9.1	[2]
Fixed Income Securities | Corporate Bonds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[2]	0	[2]
Fixed Income Securities | Corporate Bonds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	9.6	[2]	9.1	[2]
Fixed Income Securities | Corporate Bonds | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[2]	0	[2]
Equity Securities | US Equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7.5		5.8
Equity Securities | US Equity | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4.9		3.8
Equity Securities | US Equity | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.6	[3]	2	[3]
Equity Securities | US Equity | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Equity Securities | International Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	16.2		14.2
Equity Securities | International Equity Securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Equity Securities | International Equity Securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	16.2	[3]	14.2	[3]
Equity Securities | International Equity Securities | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$0		$0
[1]	Assets categorized as Level 2 reflect investments in money market funds.
[2]	Securities of diverse industries, substantially all investment grade.
[3]	Assets categorized as Level 2 reflect investments in common collective funds.

Retirement_Benefits_Schedule_o5

Retirement Benefits Schedule of Expected Benefit Payments (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Compensation and Retirement Disclosure [Abstract]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	$1.30
Defined Benefit Plan, Expected Future Benefit Payments, Year Two	1.3
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	1.4
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	1.5
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	1.7
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	$13.10

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended								9 Months Ended				12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income	$50	$37.20	$36.40	$19.90	$18.80	$38.70	$37.20	$18.70	$279.10		$93.50		$143.50	$113.40	$107.10
Weighted average shares for basic EPS									112.3		112.3		97	97	97
Dilutive potential shares from granted RSUs and PRSUs									0.5	[1]	0.5	[1]
Weighted average shares for diluted EPS									112.8		112.8		97	97	97
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount									0.1
[1]	The potential impact of an aggregate 0.1 million granted RSUs, PRSUs and stock options for the nine months ended September 30, 2014, was antidilutive.

Commitment_and_Contingencies_N

Commitment and Contingencies - Narrative (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]
Outstanding letters of credit and surety bonds	$78.30			$99.30
Related Party Transaction [Line Items]
Operating Leases, Future Minimum Payments Due	674
Operating Leases, Rent Expense	292	283.2	279.3
Operating Leases, Rent Expense, Contingent Rentals	35.7	28.6	24.7
CBS Corp.
Related Party Transaction [Line Items]
Indemnification of Letters of Credit and Surety Bonds	$78.30			$0

Commitment_and_Contingencies_S

Commitment and Contingencies Schedule of Future Minimum Lease Payments, Operating Lease (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Other Commitments [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$89.70
Operating Leases, Future Minimum Payments, Due in Two Years	84.2
Operating Leases, Future Minimum Payments, Due in Three Years	73
Operating Leases, Future Minimum Payments, Due in Four Years	59.8
Operating Leases, Future Minimum Payments, Due in Five Years	51.8
Operating Leases, Future Minimum Payments, Due Thereafter	315.5
Operating Leases, Future Minimum Payments Due	674
Guaranteed Minimum Franchise Payments [Member]
Other Commitments [Line Items]
Other Commitment, Due in Next Twelve Months	150.8
Other Commitment, Due in Second Year	97.2
Other Commitment, Due in Third Year	22.7
Other Commitment, Due in Fourth Year	14.7
Other Commitment, Due in Fifth Year	7.2
Other Commitment, Due after Fifth Year	38.7
Other Commitment	$331.30

Segment_Information_Reconcilia

Segment Information - Reconciliation of Revenue from Segments to Consolidated (Details) (USD $)	3 Months Ended								9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Revenues	$343.90	$338.20	$332.70	$279.20	$335.80	$331.50	$331.40	$285.90	$958.80	$950.10	$1,294	[1]	$1,284.60	[1]	$1,277.10	[1]
UNITED STATES
Segment Reporting Information [Line Items]
Revenues	302.5	296.5	285.9	245.2	287.4	284.9	281.7	244.6	842.4	827.6	1,130.10	[1]	1,098.60	[1]	1,051.50	[1]
International
Segment Reporting Information [Line Items]
Revenues	41.4	41.7	46.8	34	48.4	46.6	49.7	41.3	116.4	122.5	163.9		186		225.6
CANADA
Segment Reporting Information [Line Items]
Revenues											84.7	[1]	99.2	[1]	138.1	[1]
Latin America [Member]
Segment Reporting Information [Line Items]
Revenues											$79.20	[1]	$86.80	[1]	$87.50	[1]
[1]	Revenues classifications are based on customers’ locations.

Segment_Information_Adjusted_O

Segment Information Adjusted OIBDA by Segment and Reconciliation to Consolidated Net Income (Details) (USD $)	3 Months Ended										9 Months Ended				12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013		Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting Information [Line Items]
Net income	$50		$37.20	$36.40	$19.90		$18.80	$38.70	$37.20	$18.70	$279.10		$93.50		$143.50		$113.40		$107.10
Provision for income taxes											202.9		-70.5		-96.6		-89		-87.8
Equity in earnings of investee companies, net of tax											-1.4		-1.9		-2.5		-2.2		-1.7
Income before income taxes and equity in earnings of investee companies											74.8		162.1		237.6		200.2		193.2
Interest Expense											57.3		0
Other (income) expense, net											0.5		0		1.2		1		-0.8
Operating income	76.7		64.6	62.8	34.7		46	63.7	61.3	30.2	132.6		162.1		238.8		201.2		192.4
Restructuring charges							0.1	1.9	0.5	0	6.2	[1]	0	[1]	0		2.5		3
Acquisition costs											1.4	[1]	0	[1]
Net (gain) loss on dispositions	-17.5	[2]	-0.1	0.1	-9.8	[3]	0.4	0.3	0.7	0.8	-1.4		-9.8		-27.3		2.2		2
Depreciation and amortization											146.6		146.5		195.8		196.8		211.9
Depreciation	26.2		26.4	25.9	26		25.9	26.7	26.8	26.5	79.3		78.3		104.5		105.9		109
Amortization	23.1		22.6	22.7	22.9		23	23	22.8	22.1	67.3		68.2		91.3		90.9		102.9
Stock-based compensation											7.4	[1]	5.8	[1]
Adjusted OIBDA	110.2		116.1	113.1	75.4		96.8	117.1	113.6	80.9	292.8		304.6		414.8		408.4		414.3
Capital expenditures											43.6		41.5		60.9		48.2		43.6
Stock-based compensation	1.7		2.6	1.6	1.6		1.4	1.5	1.5	1.3	10.9		5.8		7.5	[4]	5.7	[4]	5	[4]
UNITED STATES
Segment Reporting Information [Line Items]
Operating income	81.7		72	65.2	48.2		57.5	64.5	59.3	35.1	168.5		185.4		267.1		216.4		192.2
Net (gain) loss on dispositions											-1.3		-10
Depreciation and amortization											125.8		124.8		166.8		165.6		168.2
Adjusted OIBDA	106.2		113.6	106.5	80.1		98.7	108.1	101.9	76.7	293		300.2		406.4		385.4		364.7
Capital expenditures											37.4		37.1		54.1		42.5		36.8
International
Segment Reporting Information [Line Items]
Operating income	1.8		0.6	4.1	-6.6		-7.9	2.7	5.1	-1.9	-3.8		-1.9		-0.1		-2		12.8
Net (gain) loss on dispositions											-0.1		0.2
Depreciation and amortization											20.8		21.7		29		31.2		43.7
Adjusted OIBDA	9.1		7.9	11.5	0.6		0.3	11	13.3	5.9	16.9		20		29.1		30.5		57.2
Capital expenditures											6.2		4.4		6.8		5.7		6.8
Corporate
Segment Reporting Information [Line Items]
Operating income	-6.8		-8	-6.5	-6.9		-3.6	-3.5	-3.1	-3	-32.1		-21.4		-28.2		-13.2		-12.6
Adjusted OIBDA	-5.1		-5.4	-4.9	-5.3		-2.2	-2	-1.6	-1.7	-17.1		-15.6		-20.7		-7.5		-7.6
Restructuring Charges
Segment Reporting Information [Line Items]
Stock-based compensation											$3.50	[1]
[1]	Restructuring charges (including stock-based compensation of $3.5 million), costs related to the Acquisition and stock-based compensation are classified as Corporate expense.
[2]	During the fourth quarter of 2013, the Company sold 50% of its transit shelter operations in Los Angeles, and the Company and the buyer each subsequently contributed their respective 50% interests in these operations to a 50/50 joint venture they own together. This transaction resulted in a gain of $17.5 million.
[3]	During the first quarter of 2013, the Company exchanged most of its billboards in Salt Lake City for billboards in New Jersey resulting in a gain of $9.8 million.
[4]	(a)Stock-based compensation is classified as a Corporate expense.

Segment_Information_Reconcilia1

Segment Information - Reconciliation of Assets from Segment to Consolidated (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Segment Reporting Information [Line Items]
Assets	$3,522.80	$3,355.50	$3,464.90
UNITED STATES
Segment Reporting Information [Line Items]
Assets	2,967	3,027.60	3,114.40
International
Segment Reporting Information [Line Items]
Assets	297.3	327.9	350.5
Corporate
Segment Reporting Information [Line Items]
Assets	$258.50	$0

Segment_Information_Long_Lived

Segment Information - Long Lived Assets by Geographic Areas (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Millions, unless otherwise specified
Segment Reporting Information [Line Items]
Long-Lived Assets	$3,014.20	[1]	$3,135.70	[1]
UNITED STATES
Segment Reporting Information [Line Items]
Long-Lived Assets	2,768.50	[1]	2,782.70	[1]
CANADA
Segment Reporting Information [Line Items]
Long-Lived Assets	138.1	[1]	193.7	[1]
Latin America [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	$107.60	[1]	$159.30	[1]
[1]	(a)Reflects total assets less current assets, investments and noncurrent deferred tax assets.

Segment_Information_Narrative_

Segment Information - Narrative (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
	segment	segment
Segment Reporting [Abstract]
Number of Operating Segments	2	2

Subsequent_Events_Narrative_De

Subsequent Events Narrative (Details) (USD $)

0 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

3 Months Ended

0 Months Ended

Jan. 31, 2014

Jan. 15, 2014

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2014

Oct. 29, 2014

Nov. 06, 2014

Sep. 30, 2014

Oct. 02, 2014

Apr. 02, 2014

Dec. 31, 2013

Dec. 31, 2012

Oct. 01, 2014

Feb. 18, 2014

Subsequent Event [Line Items]

Long-term debt

$1,598,200,000

$1,598,200,000

$0

$0

Proceeds from Initial Public Offering Held for Payment Upon Election of REIT Status

100,000,000

Deferred finance costs

29,300,000

29,300,000

Covenant description

The Credit Agreement requires, in connection with the incurrence of certain indebtedness, that we maintain a Consolidated Total Leverage Ratio, which is the ratio of our consolidated total debt to our Consolidated EBITDA for the trailing four consecutive quarters, of no greater than 6.0 to 1.0.

Distribution of net debt proceeds to CBS

2,038,800,000

0

Net proceeds retained from incurrence of debt

50,000,000

Stock Issued During Period, Shares, New Issues

100

Subsequent Event

Subsequent Event [Line Items]

Long-term debt

1,598,000,000

Distributed Earnings

547,700,000

Acquisition cost

15,000,000

690,000,000

Deferred finance costs

10,800,000

Number of Businesses Acquired

2

Proceeds from Debt, Net of Issuance Costs

1,570,000,000

Distribution of net debt proceeds to CBS

1,520,000,000

109,500,000

Net proceeds retained from incurrence of debt

50,000,000

Senior Notes

Subsequent Event [Line Items]

Long-term debt

800,000,000

800,000,000

0

Term loan, due 2021 | Secured Debt

Subsequent Event [Line Items]

Long-term debt

798,200,000

798,200,000

0

Debt face amount

800,000,000

Stated interest rate

2.25%

2.25%

Maturity date

31-Jan-21

Debt discount

1,800,000

1,800,000

Adjustment to term loan reference rate to arrive at effective rate

plus the greater of the London Interbank Offered Rate (“LIBOR”) or 0.75%

Interest rate at period end

3.00%

3.00%

Basis spread on variable rate

0.75%

Term loan, due 2021 | Secured Debt | Subsequent Event

Subsequent Event [Line Items]

Long-term debt

798,000,000

Debt face amount

800,000,000

Stated interest rate

2.25%

Adjustment to term loan reference rate to arrive at effective rate

2.25% plus the greater of the London Interbank Offered Rate (“LIBOR”) or 0.75%.

Interest rate at period end

3.00%

Basis spread on variable rate

0.75%

Senior Notes Due 2025 | Senior Notes | Subsequent Event

Subsequent Event [Line Items]

Allowable early redemption percentage for senior notes

35.00%

Debt face amount

450,000,000

Stated interest rate

5.88%

5.250% senior unsecured notes, due 2022 | Senior Notes

Subsequent Event [Line Items]

Long-term debt

400,000,000

400,000,000

0

Allowable early redemption percentage for senior notes

35.00%

Debt face amount

400,000,000

Stated interest rate

5.25%

Maturity date

31-Jan-22

5.250% senior unsecured notes, due 2022 | Senior Notes | Subsequent Event

Subsequent Event [Line Items]

Long-term debt

400,000,000

Allowable early redemption percentage for senior notes

35.00%

35.00%

Debt face amount

400,000,000

150,000,000

Stated interest rate

5.25%

5.25%

Maturity date

31-Jan-22

5.250% senior unsecured notes, due 2022 | Unsecured Debt | Subsequent Event

Subsequent Event [Line Items]

Debt discount

800,000

800,000

New Senior Notes | Subsequent Event

Subsequent Event [Line Items]

Deferred finance costs

1,600,000

1,600,000

5.625% senior unsecured notes, due 2024 | Senior Notes

Subsequent Event [Line Items]

Long-term debt

400,000,000

400,000,000

0

Allowable early redemption percentage for senior notes

35.00%

Debt face amount

400,000,000

Stated interest rate

5.63%

Maturity date

31-Jan-24

5.625% senior unsecured notes, due 2024 | Senior Notes | Subsequent Event

Subsequent Event [Line Items]

Long-term debt

400,000,000

Allowable early redemption percentage for senior notes

35.00%

Debt face amount

400,000,000

Stated interest rate

5.63%

Maturity date

31-Jan-24

Revolving Credit Facility

Subsequent Event [Line Items]

Maximum borrowing capacity

425,000,000

Cash adjustment to debt compliance calculation

150,000,000

150,000,000

Covenant description

The Credit Agreement contains certain customary affirmative and negative covenants. As of September 30, 2014, the terms of the Revolving Credit Facility require that as an entity being taxed as a REIT, we are required to maintain a Maximum Consolidated Net Secured Leverage Ratio of no greater than 4.0 to 1.0.

Maximum consolidated net secured coverage ratio, REIT election

4

Revolving Credit Facility | Subsequent Event

Subsequent Event [Line Items]

Long-term debt

0

Maximum borrowing capacity

425,000,000

Cash adjustment to debt compliance calculation

150,000,000

Covenant description

The terms of the Revolving Credit Facility require the Company to maintain a maximum consolidated net secured leverage ratio of 3.50 to 1.00, which will be increased to 4.00 to 1.00 if the Company elects to be taxed as a REIT.

Debt Covenant, Maximum Consolidated Net Secured Leverage Ratio

3.5

Maximum consolidated net secured coverage ratio, REIT election

4

Letter of Credit

Subsequent Event [Line Items]

Maximum borrowing capacity

80,000,000

Letter of Credit | Subsequent Event

Subsequent Event [Line Items]

Maximum borrowing capacity

$80,000,000

Debt Instrument, Redemption, Period One [Member] | Term loan, due 2021 | Secured Debt | Subsequent Event

Subsequent Event [Line Items]

Debt Instrument, Prepayment Fee, Percent on Debt Redeemed

1.00%

Subsequent_Events_Schedule_of_

Subsequent Events Schedule of Long Term Debt (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2014
Debt Instrument [Line Items]
Long-term debt	$1,598,200,000	$0	$0
Subsequent Event
Debt Instrument [Line Items]
Long-term debt				1,598,000,000
Secured Debt | Term loan, due 2021
Debt Instrument [Line Items]
Long-term debt	798,200,000	0
Secured Debt | Term loan, due 2021 | Subsequent Event
Debt Instrument [Line Items]
Long-term debt				798,000,000
Senior Notes
Debt Instrument [Line Items]
Long-term debt	800,000,000	0
Senior Notes | 5.250% senior unsecured notes, due 2022
Debt Instrument [Line Items]
Long-term debt	400,000,000	0
Senior Notes | 5.250% senior unsecured notes, due 2022 | Subsequent Event
Debt Instrument [Line Items]
Long-term debt				400,000,000
Senior Notes | 5.625% senior unsecured notes, due 2024
Debt Instrument [Line Items]
Long-term debt	400,000,000	0
Senior Notes | 5.625% senior unsecured notes, due 2024 | Subsequent Event
Debt Instrument [Line Items]
Long-term debt				$400,000,000

Subsequent_Events_Unaudited_Na

Subsequent Events (Unaudited) Narrative (Details) (USD $)	0 Months Ended	9 Months Ended	0 Months Ended
In Millions, unless otherwise specified	Oct. 02, 2014	Sep. 30, 2014	Jan. 31, 2014	Oct. 01, 2014
Subsequent Event [Line Items]
Deferred finance costs		29.3
Subsequent Event
Subsequent Event [Line Items]
Deferred finance costs				10.8
Senior Notes Due 2025 | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Allowable early redemption percentage for senior notes	35.00%
Stated interest rate				5.88%
Debt face amount				450
New Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Deferred finance costs		1.6
5.250% senior unsecured notes, due 2022 | Senior Notes
Subsequent Event [Line Items]
Allowable early redemption percentage for senior notes		35.00%
Stated interest rate			5.25%
Debt face amount			400
5.250% senior unsecured notes, due 2022 | Senior Notes | Subsequent Event
Subsequent Event [Line Items]
Allowable early redemption percentage for senior notes	35.00%		35.00%
Stated interest rate			5.25%	5.25%
Debt face amount			400	150
5.250% senior unsecured notes, due 2022 | Unsecured Debt | Subsequent Event
Subsequent Event [Line Items]
Debt discount		0.8

Quarterly_Financial_Data_Detai

Quarterly Financial Data (Details) (USD $)	3 Months Ended										9 Months Ended				12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013		Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Quarterly Financial Data [Line Items]
Revenues	$343.90		$338.20	$332.70	$279.20		$335.80	$331.50	$331.40	$285.90	$958.80		$950.10		$1,294	[1]	$1,284.60	[1]	$1,277.10	[1]
Adjusted OIBDA	110.2		116.1	113.1	75.4		96.8	117.1	113.6	80.9	292.8		304.6		414.8		408.4		414.3
Restructuring charges							-0.1	-1.9	-0.5	0	-6.2	[2]	0	[2]	0		-2.5		-3
Net gain (loss) on dispositions	17.5	[3]	0.1	-0.1	9.8	[4]	-0.4	-0.3	-0.7	-0.8	1.4		9.8		27.3		-2.2		-2
Depreciation	-26.2		-26.4	-25.9	-26		-25.9	-26.7	-26.8	-26.5	-79.3		-78.3		-104.5		-105.9		-109
Amortization	-23.1		-22.6	-22.7	-22.9		-23	-23	-22.8	-22.1	-67.3		-68.2		-91.3		-90.9		-102.9
Stock-based Compensation	-1.7		-2.6	-1.6	-1.6		-1.4	-1.5	-1.5	-1.3	-10.9		-5.8		-7.5	[5]	-5.7	[5]	-5	[5]
Operating Income (Loss)	76.7		64.6	62.8	34.7		46	63.7	61.3	30.2	132.6		162.1		238.8		201.2		192.4
Net income	50		37.2	36.4	19.9		18.8	38.7	37.2	18.7	279.1		93.5		143.5		113.4		107.1
Percentage of Company's ownership in group of assets sold	50.00%
Percentage of Company's ownership in group of assets contributed to a joint venture	50.00%
UNITED STATES
Quarterly Financial Data [Line Items]
Revenues	302.5		296.5	285.9	245.2		287.4	284.9	281.7	244.6	842.4		827.6		1,130.10	[1]	1,098.60	[1]	1,051.50	[1]
Adjusted OIBDA	106.2		113.6	106.5	80.1		98.7	108.1	101.9	76.7	293		300.2		406.4		385.4		364.7
Net gain (loss) on dispositions											1.3		10
Operating Income (Loss)	81.7		72	65.2	48.2		57.5	64.5	59.3	35.1	168.5		185.4		267.1		216.4		192.2
International
Quarterly Financial Data [Line Items]
Revenues	41.4		41.7	46.8	34		48.4	46.6	49.7	41.3	116.4		122.5		163.9		186		225.6
Adjusted OIBDA	9.1		7.9	11.5	0.6		0.3	11	13.3	5.9	16.9		20		29.1		30.5		57.2
Net gain (loss) on dispositions											0.1		-0.2
Operating Income (Loss)	1.8		0.6	4.1	-6.6		-7.9	2.7	5.1	-1.9	-3.8		-1.9		-0.1		-2		12.8
Corporate
Quarterly Financial Data [Line Items]
Adjusted OIBDA	-5.1		-5.4	-4.9	-5.3		-2.2	-2	-1.6	-1.7	-17.1		-15.6		-20.7		-7.5		-7.6
Operating Income (Loss)	($6.80)		($8)	($6.50)	($6.90)		($3.60)	($3.50)	($3.10)	($3)	($32.10)		($21.40)		($28.20)		($13.20)		($12.60)
[1]	Revenues classifications are based on customers’ locations.
[2]	Restructuring charges (including stock-based compensation of $3.5 million), costs related to the Acquisition and stock-based compensation are classified as Corporate expense.
[3]	During the fourth quarter of 2013, the Company sold 50% of its transit shelter operations in Los Angeles, and the Company and the buyer each subsequently contributed their respective 50% interests in these operations to a 50/50 joint venture they own together. This transaction resulted in a gain of $17.5 million.
[4]	During the first quarter of 2013, the Company exchanged most of its billboards in Salt Lake City for billboards in New Jersey resulting in a gain of $9.8 million.
[5]	(a)Stock-based compensation is classified as a Corporate expense.

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Statements Narrative (Details) (Parent Company)	Sep. 30, 2014	Dec. 31, 2013
Subsequent Event [Line Items]
Equity Method Investment, Ownership Percentage	100.00%
Subsequent Event
Subsequent Event [Line Items]
Equity Method Investment, Ownership Percentage		100.00%

Condensed_Consolidating_Financ3

Condensed Consolidating Financial Statements Condensed Balance Sheet (Details) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Condensed Consolidating Financial Statements [Abstract]
Billboard	$690,200,000	$685,800,000	$925,700,000	$913,600,000	$894,200,000
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	272,200,000	24,100,000	29,800,000	20,200,000	37,600,000	19,000,000
Receivables, less allowance	175,600,000		178,800,000	175,100,000
Other current assets	113,000,000		108,600,000	119,700,000
Total current assets	560,800,000		317,200,000	315,000,000
Property and equipment, net	704,400,000		755,400,000	807,900,000
Goodwill	1,860,400,000		1,865,700,000	1,877,200,000	1,872,300,000
Intangible assets	320,100,000		364,400,000	420,000,000
Investments in subsidiaries	0		0	0
Other assets	77,100,000		52,800,000	44,800,000
Intercompany	0		0	0
Total assets	3,522,800,000		3,355,500,000	3,464,900,000
Total current liabilities	237,900,000		212,200,000	205,600,000
Long-term debt	1,598,200,000		0	0
Deferred income tax liabilities, net	22,800,000		288,500,000	313,800,000
Asset retirement obligation	32,300,000		31,700,000	30,600,000	29,300,000
Deficit In Excess Of Investment In Subsidiaries	0
Other liabilities	64,600,000		68,700,000	71,000,000
Intercompany	0		0	0
Total liabilities	1,955,800,000		601,100,000	621,000,000
Total invested equity		2,798,600,000	2,754,400,000	2,843,900,000	2,990,600,000
Total stockholders' equity	1,567,000,000
Total liabilities and invested equity/shareholders' equity	3,522,800,000		3,355,500,000	3,464,900,000
Transit and other	268,600,000	264,300,000	368,300,000	371,000,000	382,900,000
Parent Company
Condensed Consolidating Financial Statements [Abstract]
Billboard	0	0	0	0	0
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0	0	0
Receivables, less allowance	0		0	0
Other current assets	0		0	0
Total current assets	0		0	0
Property and equipment, net	0		0	0
Goodwill	0		0	0
Intangible assets	0		0	0
Investments in subsidiaries	1,567,000,000		0	0
Other assets	0		0	0
Intercompany	0		0	0
Total assets	1,567,000,000		0	0
Total current liabilities	0		0	0
Long-term debt	0
Deferred income tax liabilities, net	0		0	0
Asset retirement obligation	0		0	0
Deficit In Excess Of Investment In Subsidiaries	0
Other liabilities	0		0	0
Intercompany	0		0	0
Total liabilities	0		0	0
Total invested equity			0	0
Total stockholders' equity	1,567,000,000
Total liabilities and invested equity/shareholders' equity	1,567,000,000		0	0
Transit and other	0	0	0	0	0
Subsidiary Issuers
Condensed Consolidating Financial Statements [Abstract]
Billboard	0	0	0	0	0
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	230,000,000	0	0	0	0	0
Receivables, less allowance	0		0	0
Other current assets	4,100,000		0	0
Total current assets	234,100,000		0	0
Property and equipment, net	0		0	0
Goodwill	0		0	0
Intangible assets	0		0	0
Investments in subsidiaries	2,935,500,000		0	0
Other assets	23,900,000		0	0
Intercompany	0		0	0
Total assets	3,193,500,000		0	0
Total current liabilities	28,300,000		0	0
Long-term debt	1,598,200,000
Deferred income tax liabilities, net	0		0	0
Asset retirement obligation	0		0	0
Deficit In Excess Of Investment In Subsidiaries	0
Other liabilities	0		0	0
Intercompany	0		0	0
Total liabilities	1,626,500,000		0	0
Total invested equity			0	0
Total stockholders' equity	1,567,000,000
Total liabilities and invested equity/shareholders' equity	3,193,500,000		0	0
Transit and other	0	0	0	0	0
Guarantor Subsidiaries
Condensed Consolidating Financial Statements [Abstract]
Billboard	599,700,000	589,800,000	796,600,000	770,700,000	746,800,000
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	23,500,000	9,500,000	2,100,000	9,500,000	10,000,000	2,100,000
Receivables, less allowance	140,900,000		146,000,000	138,000,000
Other current assets	87,400,000		89,100,000	98,200,000
Total current assets	251,800,000		237,200,000	245,700,000
Property and equipment, net	596,200,000		628,100,000	655,800,000
Goodwill	1,751,400,000		1,751,600,000	1,758,000,000
Intangible assets	319,900,000		364,200,000	419,700,000
Investments in subsidiaries	218,600,000		232,900,000	241,000,000
Other assets	48,100,000		46,500,000	35,200,000
Intercompany	66,100,000		66,000,000	65,800,000
Total assets	3,252,100,000		3,326,500,000	3,421,200,000
Total current liabilities	176,400,000		168,300,000	158,700,000
Long-term debt	0
Deferred income tax liabilities, net	-1,100,000		259,400,000	276,800,000
Asset retirement obligation	23,700,000		23,100,000	28,000,000
Deficit In Excess Of Investment In Subsidiaries	1,368,500,000
Other liabilities	62,800,000		65,600,000	57,300,000
Intercompany	54,800,000		55,700,000	56,500,000
Total liabilities	1,685,100,000		572,100,000	577,300,000
Total invested equity			2,754,400,000	2,843,900,000
Total stockholders' equity	1,567,000,000
Total liabilities and invested equity/shareholders' equity	3,252,100,000		3,326,500,000	3,421,200,000
Transit and other	242,700,000	237,800,000	333,500,000	327,900,000	304,700,000
Non-Guarantor Subsidiaries
Condensed Consolidating Financial Statements [Abstract]
Billboard	90,500,000	96,000,000	129,100,000	142,900,000	147,400,000
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	18,700,000	14,600,000	27,700,000	10,700,000	27,600,000	16,900,000
Receivables, less allowance	34,700,000		32,800,000	37,100,000
Other current assets	21,500,000		19,500,000	21,500,000
Total current assets	74,900,000		80,000,000	69,300,000
Property and equipment, net	108,200,000		127,300,000	152,100,000
Goodwill	109,000,000		114,100,000	119,200,000
Intangible assets	200,000		200,000	300,000
Investments in subsidiaries	0		0	0
Other assets	5,100,000		6,300,000	9,600,000
Intercompany	54,800,000		55,700,000	56,500,000
Total assets	352,200,000		383,600,000	407,000,000
Total current liabilities	33,200,000		43,900,000	46,900,000
Long-term debt	0
Deferred income tax liabilities, net	23,900,000		29,100,000	37,000,000
Asset retirement obligation	8,600,000		8,600,000	2,600,000
Deficit In Excess Of Investment In Subsidiaries	0
Other liabilities	1,800,000		3,100,000	13,700,000
Intercompany	66,100,000		66,000,000	65,800,000
Total liabilities	133,600,000		150,700,000	166,000,000
Total invested equity			232,900,000	241,000,000
Total stockholders' equity	218,600,000
Total liabilities and invested equity/shareholders' equity	352,200,000		383,600,000	407,000,000
Transit and other	25,900,000	26,500,000	34,800,000	43,100,000	78,200,000
Eliminations
Condensed Consolidating Financial Statements [Abstract]
Billboard	0	0	0	0	0
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0	0	0
Receivables, less allowance	0		0	0
Other current assets	0		0	0
Total current assets	0		0	0
Property and equipment, net	0		0	0
Goodwill	0		0	0
Intangible assets	0		0	0
Investments in subsidiaries	-4,721,100,000		-232,900,000	-241,000,000
Other assets	0		0	0
Intercompany	-120,900,000		-121,700,000	-122,300,000
Total assets	-4,842,000,000		-354,600,000	-363,300,000
Total current liabilities	0		0	0
Long-term debt	0
Deferred income tax liabilities, net	0		0	0
Asset retirement obligation	0		0	0
Deficit In Excess Of Investment In Subsidiaries	-1,368,500,000
Other liabilities	0		0	0
Intercompany	-120,900,000		-121,700,000	-122,300,000
Total liabilities	-1,489,400,000		-121,700,000	-122,300,000
Total invested equity			-232,900,000	-241,000,000
Total stockholders' equity	-3,352,600,000
Total liabilities and invested equity/shareholders' equity	-4,842,000,000		-354,600,000	-363,300,000
Transit and other	$0	$0	$0	$0	$0

Condensed_Consolidating_Financ4

Condensed Consolidating Financial Statements Condensed Income Statements (Details) (USD $)	3 Months Ended										9 Months Ended				12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013		Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Condensed Income Statements, Captions [Line Items]
Billboard											$690.20		$685.80		$925.70		$913.60		$894.20
Transit and other											268.6		264.3		368.3		371		382.9
Total revenues	343.9		338.2	332.7	279.2		335.8	331.5	331.4	285.9	958.8		950.1		1,294	[1]	1,284.60	[1]	1,277.10	[1]
Operating											512.3		504.5		686.9		700.1		689.4
Selling, general and administrative											161.1		146.8		199.8		181.8		178.4
Restructuring charges							0.1	1.9	0.5	0	6.2	[2]	0	[2]	0		2.5		3
Acquisition costs											1.4	[2]	0	[2]
Net (gain) loss on dispositions	-17.5	[3]	-0.1	0.1	-9.8	[4]	0.4	0.3	0.7	0.8	-1.4		-9.8		-27.3		2.2		2
Depreciation	26.2		26.4	25.9	26		25.9	26.7	26.8	26.5	79.3		78.3		104.5		105.9		109
Amortization	23.1		22.6	22.7	22.9		23	23	22.8	22.1	67.3		68.2		91.3		90.9		102.9
Total expenses											826.2		788		1,055.20		1,083.40		1,084.70
Operating Income (Loss)	76.7		64.6	62.8	34.7		46	63.7	61.3	30.2	132.6		162.1		238.8		201.2		192.4
Interest income (expense), net											-57.3		0
Other income (expense), net											-0.5		0		-1.2		-1		0.8
Income before income taxes and equity in earnings of investee companies											74.8		162.1		237.6		200.2		193.2
Equity in earnings of investee companies, net of tax											1.4		1.9		2.5		2.2		1.7
Benefit (provision) for income taxes											202.9		-70.5		-96.6		-89		-87.8
Net income	50		37.2	36.4	19.9		18.8	38.7	37.2	18.7	279.1		93.5		143.5		113.4		107.1
Cumulative translation adjustments											-3.1		-12.3		-14.9		11		-14.3
Amortization of net actuarial loss											0.2		0.4		5.8		-1.4		-3.2
Deferred tax rate adjustment											-1.2		0
Total other comprehensive income (loss), net of tax											-4.1		-11.9		-9.1		9.6		-17.5
Total comprehensive income											275		81.6		134.4		123		89.6
Parent Company
Condensed Income Statements, Captions [Line Items]
Billboard											0		0		0		0		0
Transit and other											0		0		0		0		0
Total revenues											0		0		0		0		0
Operating											0		0		0		0		0
Selling, general and administrative											0.9		0		0		0		0
Restructuring charges											0						0		0
Acquisition costs											0
Net (gain) loss on dispositions											0		0		0		0		0
Depreciation											0		0		0		0		0
Amortization											0		0		0		0		0
Total expenses											0.9		0		0		0		0
Operating Income (Loss)											-0.9		0		0		0		0
Interest income (expense), net											0		0
Other income (expense), net											0		0		0		0		0
Income before income taxes and equity in earnings of investee companies											-0.9		0		0		0		0
Equity in earnings of investee companies, net of tax											280		0		0		0		0
Benefit (provision) for income taxes											0		0		0		0		0
Net income											279.1		0		0		0		0
Cumulative translation adjustments											-3.1		0		0		0		0
Amortization of net actuarial loss											0.2		0		0		0		0
Deferred tax rate adjustment											-1.2
Total other comprehensive income (loss), net of tax											-4.1		0		0		0		0
Total comprehensive income											275		0		0		0		0
Subsidiary Issuers
Condensed Income Statements, Captions [Line Items]
Billboard											0		0		0		0		0
Transit and other											0		0		0		0		0
Total revenues											0		0		0		0		0
Operating											0		0		0		0		0
Selling, general and administrative											0		0		0		0		0
Restructuring charges											0						0		0
Acquisition costs											0
Net (gain) loss on dispositions											0		0		0		0		0
Depreciation											0		0		0		0		0
Amortization											0		0		0		0		0
Total expenses											0		0		0		0		0
Operating Income (Loss)											0		0		0		0		0
Interest income (expense), net											-57.3		0
Other income (expense), net											0		0		0		0		0
Income before income taxes and equity in earnings of investee companies											-57.3		0		0		0		0
Equity in earnings of investee companies, net of tax											337.3		0		0		0		0
Benefit (provision) for income taxes											0		0		0		0		0
Net income											280		0		0		0		0
Cumulative translation adjustments											-3.1		0		0		0		0
Amortization of net actuarial loss											0.2		0		0		0		0
Deferred tax rate adjustment											-1.2
Total other comprehensive income (loss), net of tax											-4.1		0		0		0		0
Total comprehensive income											275.9		0		0		0		0
Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Billboard											599.7		589.8		796.6		770.7		746.8
Transit and other											242.7		237.8		333.5		327.9		304.7
Total revenues											842.4		827.6		1,130.10		1,098.60		1,051.50
Operating											436.2		426.1		584.2		577.9		554.3
Selling, general and administrative											136.8		122.7		167.7		148.5		145.1
Restructuring charges											6.2						1.8		2.2
Acquisition costs											1.4
Net (gain) loss on dispositions											-1.3		-10		-27.5		1.6		2.1
Depreciation											62.2		60.5		80.7		80.4		81.5
Amortization											63.6		64.3		86.1		85.2		86.7
Total expenses											705.1		663.6		891.2		895.4		871.9
Operating Income (Loss)											137.3		164		238.9		203.2		179.6
Interest income (expense), net											-0.1		0
Other income (expense), net											0		-0.1		-0.2		-0.1		-0.1
Income before income taxes and equity in earnings of investee companies											137.2		163.9		238.7		203.1		179.5
Equity in earnings of investee companies, net of tax											-62.4		-2.2		-1.9		-2.4		6.8
Benefit (provision) for income taxes											205.2		-68.2		-93.3		-87.3		-79.2
Net income											280		93.5		143.5		113.4		107.1
Cumulative translation adjustments											-3.1		-12.3		-14.9		11		-14.3
Amortization of net actuarial loss											0.2		0.4		5.8		-1.4		-3.2
Deferred tax rate adjustment											-1.2
Total other comprehensive income (loss), net of tax											-4.1		-11.9		-9.1		9.6		-17.5
Total comprehensive income											275.9		81.6		134.4		123		89.6
Non-Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Billboard											90.5		96		129.1		142.9		147.4
Transit and other											25.9		26.5		34.8		43.1		78.2
Total revenues											116.4		122.5		163.9		186		225.6
Operating											76.1		78.4		102.7		122.2		135.1
Selling, general and administrative											23.4		24.1		32.1		33.3		33.3
Restructuring charges											0						0.7		0.8
Acquisition costs											0
Net (gain) loss on dispositions											-0.1		0.2		0.2		0.6		-0.1
Depreciation											17.1		17.8		23.8		25.5		27.5
Amortization											3.7		3.9		5.2		5.7		16.2
Total expenses											120.2		124.4		164		188		212.8
Operating Income (Loss)											-3.8		-1.9		-0.1		-2		12.8
Interest income (expense), net											0.1		0
Other income (expense), net											-0.5		0.1		-1		-0.9		0.9
Income before income taxes and equity in earnings of investee companies											-4.2		-1.8		-1.1		-2.9		13.7
Equity in earnings of investee companies, net of tax											0.4		0		0		0		0
Benefit (provision) for income taxes											-2.3		-2.3		-3.3		-1.7		-8.6
Net income											-6.1		-4.1		-4.4		-4.6		5.1
Cumulative translation adjustments											-3.1		-12.3		-14.9		11		-14.3
Amortization of net actuarial loss											0.2		0.4		5.6		-1.3		-3
Deferred tax rate adjustment											-1.2
Total other comprehensive income (loss), net of tax											-4.1		-11.9		-9.3		9.7		-17.3
Total comprehensive income											-10.2		-16		-13.7		5.1		-12.2
Eliminations
Condensed Income Statements, Captions [Line Items]
Billboard											0		0		0		0		0
Transit and other											0		0		0		0		0
Total revenues											0		0		0		0		0
Operating											0		0		0		0		0
Selling, general and administrative											0		0		0		0		0
Restructuring charges											0						0		0
Acquisition costs											0
Net (gain) loss on dispositions											0		0		0		0		0
Depreciation											0		0		0		0		0
Amortization											0		0		0		0		0
Total expenses											0		0		0		0		0
Operating Income (Loss)											0		0		0		0		0
Interest income (expense), net											0		0
Other income (expense), net											0		0		0		0		0
Income before income taxes and equity in earnings of investee companies											0		0		0		0		0
Equity in earnings of investee companies, net of tax											-553.9		4.1		4.4		4.6		-5.1
Benefit (provision) for income taxes											0		0		0		0		0
Net income											-553.9		4.1		4.4		4.6		-5.1
Cumulative translation adjustments											9.3		12.3		14.9		-11		14.3
Amortization of net actuarial loss											-0.6		-0.4		-5.6		1.3		3
Deferred tax rate adjustment											3.6
Total other comprehensive income (loss), net of tax											12.3		11.9		9.3		-9.7		17.3
Total comprehensive income											($541.60)		$16		$13.70		($5.10)		$12.20
[1]	Revenues classifications are based on customers’ locations.
[2]	Restructuring charges (including stock-based compensation of $3.5 million), costs related to the Acquisition and stock-based compensation are classified as Corporate expense.
[3]	During the fourth quarter of 2013, the Company sold 50% of its transit shelter operations in Los Angeles, and the Company and the buyer each subsequently contributed their respective 50% interests in these operations to a 50/50 joint venture they own together. This transaction resulted in a gain of $17.5 million.
[4]	During the first quarter of 2013, the Company exchanged most of its billboards in Salt Lake City for billboards in New Jersey resulting in a gain of $9.8 million.

Condensed_Consolidating_Financ5

Condensed Consolidating Financial Statements Condensed Cash Flow Statements (Details) (USD $)	9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Cash Flow Statements, Captions [Line Items]
Net cash flow provided by operating activities	$184.50	$178.70	$281.10	$305.90	$340.10
Net cash flow used for investing activities	-41.3	-41.1	-43.7	-48.1	-50.7
Proceeds from IPO	615	0
Proceeds from long-term debt borrowings	1,598	0
Deferred financing fees	-24.8	0
Distribution of debt and IPO proceeds to CBS	-2,038.80	0
Excess tax benefit from stock-based compensation	0	5.5	5.8	2.9	2.3
Net cash contribution from (distribution to) CBS	39.8	-138.6	-232.6	-279.7	-269.4
Other			-0.2	-0.2	-0.2
Dividends	-88.8	0
Intercompany	0
Net cash flow provided by (used for) financing activities	100.4	-133.1	-227	-277	-267.3
Effect of exchange rate changes on cash and cash equivalents	-1.2	-0.6	-0.8	1.8	-3.5
Net increase in cash and cash equivalents	242.4	3.9	9.6	-17.4	18.6
Cash and cash equivalents at beginning of period	29.8	20.2	20.2	37.6	19
Cash and cash equivalents at end of period	272.2	24.1	29.8	20.2	37.6
Parent Company
Condensed Cash Flow Statements, Captions [Line Items]
Net cash flow provided by operating activities	-0.9	0	0	0	0
Net cash flow used for investing activities	0	0	0	0	0
Proceeds from IPO	615
Proceeds from long-term debt borrowings	0
Deferred financing fees	0
Distribution of debt and IPO proceeds to CBS	-515
Excess tax benefit from stock-based compensation		0	0	0	0
Net cash contribution from (distribution to) CBS	0	0	0	0	0
Other			0	0	0
Dividends	-88.8
Intercompany	-10.3
Net cash flow provided by (used for) financing activities	0.9	0	0	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0	0	0	0
Net increase in cash and cash equivalents	0	0	0	0	0
Cash and cash equivalents at beginning of period	0	0	0	0	0
Cash and cash equivalents at end of period	0	0	0	0	0
Subsidiary Issuers
Condensed Cash Flow Statements, Captions [Line Items]
Net cash flow provided by operating activities	-25.6	0	0	0	0
Net cash flow used for investing activities	0	0	0	0	0
Proceeds from IPO	0
Proceeds from long-term debt borrowings	1,598
Deferred financing fees	-24.8
Distribution of debt and IPO proceeds to CBS	-1,523.80
Excess tax benefit from stock-based compensation		0	0	0	0
Net cash contribution from (distribution to) CBS	0	0	0	0	0
Other			0	0	0
Dividends	0
Intercompany	206.2
Net cash flow provided by (used for) financing activities	255.6	0	0	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0	0	0	0
Net increase in cash and cash equivalents	230	0	0	0	0
Cash and cash equivalents at beginning of period	0	0	0	0	0
Cash and cash equivalents at end of period	230	0	0	0	0
Guarantor Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
Net cash flow provided by operating activities	213.9	175	268.2	277.3	284.3
Net cash flow used for investing activities	-35.3	-37.2	-37	-42.5	-43.4
Proceeds from IPO	0
Proceeds from long-term debt borrowings	0
Deferred financing fees	0
Distribution of debt and IPO proceeds to CBS	0
Excess tax benefit from stock-based compensation		5.5	5.8	2.9	2.3
Net cash contribution from (distribution to) CBS	39.8	-143.3	-244.4	-238.2	-235.3
Other			0	0	0
Dividends	0
Intercompany	-197
Net cash flow provided by (used for) financing activities	-157.2	-137.8	-238.6	-235.3	-233
Effect of exchange rate changes on cash and cash equivalents	0	0	0	0	0
Net increase in cash and cash equivalents	21.4	0	-7.4	-0.5	7.9
Cash and cash equivalents at beginning of period	2.1	9.5	9.5	10	2.1
Cash and cash equivalents at end of period	23.5	9.5	2.1	9.5	10
Non-Guarantor Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
Net cash flow provided by operating activities	-2.9	3.7	12.9	28.6	55.8
Net cash flow used for investing activities	-6	-3.9	-6.7	-5.6	-7.3
Proceeds from IPO	0
Proceeds from long-term debt borrowings	0
Deferred financing fees	0
Distribution of debt and IPO proceeds to CBS	0
Excess tax benefit from stock-based compensation		0	0	0	0
Net cash contribution from (distribution to) CBS	0	4.7	11.8	-41.5	-34.1
Other			-0.2	-0.2	-0.2
Dividends	0
Intercompany	1.1
Net cash flow provided by (used for) financing activities	1.1	4.7	11.6	-41.7	-34.3
Effect of exchange rate changes on cash and cash equivalents	-1.2	-0.6	-0.8	1.8	-3.5
Net increase in cash and cash equivalents	-9	3.9	17	-16.9	10.7
Cash and cash equivalents at beginning of period	27.7	10.7	10.7	27.6	16.9
Cash and cash equivalents at end of period	18.7	14.6	27.7	10.7	27.6
Eliminations
Condensed Cash Flow Statements, Captions [Line Items]
Net cash flow provided by operating activities	0	0	0	0	0
Net cash flow used for investing activities	0	0	0	0	0
Proceeds from IPO	0
Proceeds from long-term debt borrowings	0
Deferred financing fees	0
Distribution of debt and IPO proceeds to CBS	0
Excess tax benefit from stock-based compensation		0	0	0	0
Net cash contribution from (distribution to) CBS	0	0	0	0	0
Other			0	0	0
Dividends	0
Intercompany	0
Net cash flow provided by (used for) financing activities	0	0	0	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0	0	0	0
Net increase in cash and cash equivalents	0	0	0	0	0
Cash and cash equivalents at beginning of period	0	0	0	0	0
Cash and cash equivalents at end of period	$0	$0	$0	$0	$0

Schedule_II_Valuation_and_Qual1

Schedule II - Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$19.30		$22.40		$29.60
Balance Acquired through Acquisitions	0		0		0
Charged to Costs and Expenses	0.4		3.1		3
Charged to Other Accounts	0	[1]	0.2	[1]	0	[1]
Deductions	4		6.4		10.2
Balance at End of Period	15.7		19.3		22.4
Valuation Allowance of Deferred Tax Assets
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	8		7.5		6.3
Balance Acquired through Acquisitions	0		0		0
Charged to Costs and Expenses	3		0.7		1.3
Charged to Other Accounts	0	[1]	0	[1]	0	[1]
Deductions	0.9		0.2		0.1
Balance at End of Period	$10.10		$8		$7.50
[1]	Reflects increase in allowance related to foreign currency translation adjustments.

III_Schedule_of_Real_Estate_an

III - Schedule of Real Estate and Accumulated Depreciation (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross carrying amount at the end of the year	$1,662.30	$1,655.90	$1,627.10
Accumulated Depreciation	-1,052.70	-990	-911
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the beginning of the year	1,655.90	1,627.10	1,607.30
Additions for construction of / improvements to structures	50.6	47	43.9
Assets sold or written-off	-14.9	-32.3	-8.9
Foreign exchange	-29.3	14.1	-15.2
Balance at the end of the year	1,662.30	1,655.90	1,627.10
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the beginning of the year	990	911	827.1
Depreciation	97.5	98.8	101.3
Foreign exchange	-21.1	9.9	-10.2
Assets sold or written off	-13.7	-29.7	-7.2
Balance at the end of the year	1,052.70	990	911
UNITED STATES
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of Displays	45,094
Encumbrances	0
Gross carrying amount at the end of the year	1,266.60
Accumulated Depreciation	-768
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of the year	1,266.60
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of the year	768
CANADA
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of Displays	6,054
Encumbrances	0
Gross carrying amount at the end of the year	348.7
Accumulated Depreciation	-258.3
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of the year	348.7
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of the year	258.3
MEXICO
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of Displays	4,657
Encumbrances	0
Gross carrying amount at the end of the year	33.1
Accumulated Depreciation	-20.5
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of the year	33.1
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of the year	20.5
ARGENTINA
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of Displays	585
Encumbrances	0
Gross carrying amount at the end of the year	1.9
Accumulated Depreciation	-0.6
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of the year	1.9
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of the year	0.6
BRAZIL
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of Displays	771
Encumbrances	0
Gross carrying amount at the end of the year	5.7
Accumulated Depreciation	-0.9
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of the year	5.7
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of the year	0.9
URUGUAY
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of Displays	156
Encumbrances	0
Gross carrying amount at the end of the year	2
Accumulated Depreciation	-1.1
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of the year	2
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of the year	1.1
CHILE
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of Displays	890
Encumbrances	0
Gross carrying amount at the end of the year	4.3
Accumulated Depreciation	-3.3
SEC Schedule III, Reconciliation of Carrying Amount of Real Estate Investments [Roll Forward]
Balance at the end of the year	4.3
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at the end of the year	$3.30
Minimum | UNITED STATES
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	5 years
Minimum | CANADA
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	5 years
Minimum | MEXICO
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	5 years
Minimum | ARGENTINA
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	5 years
Minimum | BRAZIL
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	5 years
Minimum | URUGUAY
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	5 years
Minimum | CHILE
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	5 years
Maximum | UNITED STATES
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	20 years
Maximum | CANADA
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	20 years
Maximum | MEXICO
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	20 years
Maximum | ARGENTINA
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	20 years
Maximum | BRAZIL
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	20 years
Maximum | URUGUAY
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	20 years
Maximum | CHILE
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Life Used for Depreciation	20 years
Assets
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of Assets Which Exceed Concentration Risk %	0
Concentration Risk, Percentage	5.00%