Rocket Companies 10-Q 6 Feb 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	3 Months Ended
	Dec. 31, 2014	Jan. 23, 2015
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	RKT
Entity Registrant Name	Rock-Tenn CO
Entity Central Index Key	230498
Current Fiscal Year End Date	-21
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		139,920,712

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Net sales	$2,514.20	$2,362.60
Cost of goods sold	2,044.70	1,914.80
Gross profit	469.5	447.8
Selling, general and administrative expenses	243.7	234.8
Pension lump sum settlement and retiree medical curtailment, net	11.9	0
Restructuring and other costs, net	5.4	17.6
Operating profit	208.5	195.4
Interest expense	-23.3	-24
Interest income and other income (expense), net	0.2	-0.8
Equity in income of unconsolidated entities	2.2	1.7
Income before income taxes	187.6	172.3
Income tax expense	-62	-61.7
Consolidated net income	125.6	110.6
Less: Net income attributable to noncontrolling interests	-0.5	-0.9
Net income attributable to Rock-Tenn Company shareholders	$125.10	$109.70
Basic earnings per share attributable to Rock-Tenn Company shareholders	$0.89	$0.76
Diluted earnings per share attributable to Rock-Tenn Company shareholders	$0.88	$0.75
Cash dividends paid per share	$0.19	$0.18

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Consolidated net income	$125.60	$110.60
Other comprehensive loss, net of tax:
Foreign currency translation loss	-17.7	-9.3
Defined benefit pension plans:
Net actuarial loss arising during the period	-2.8	0
Amortization and settlement recognition of net actuarial loss, included in pension cost	17.7	2.6
Prior service cost arising during the period	-13.9	0
Amortization and curtailment recognition of prior service credit, included in pension cost	-5.2	0
Other comprehensive loss	-21.9	-6.7
Comprehensive income	103.7	103.9
Less: Comprehensive income attributable to noncontrolling interests	-0.4	-0.9
Comprehensive income attributable to Rock-Tenn Company shareholders	$103.30	$103

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2014		Sep. 30, 2014
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$32.80		$32.60
Restricted cash	8.8		8.8
Accounts receivable (net of allowances of $26.9 and $25.1)	1,016.80		1,118.70
Inventories	1,031.90		1,029.20
Other current assets	232		243.2
Total current assets	2,322.30		2,432.50
Property, plant and equipment at cost:
Land and buildings	1,284.70		1,280.50
Machinery and equipment	7,147.50		7,076.20
Transportation equipment	16		15.8
Leasehold improvements	25.5		25
Property, plant and equipment, at cost	8,473.70		8,397.50
Less accumulated depreciation and amortization	-2,653.10		-2,564.90
Net property, plant and equipment	5,820.60		5,832.60
Goodwill	1,922.50		1,926.40
Intangibles, net	668.1		691.1
Other assets	164.3		157.1
Assets	10,897.80		11,039.70
Current liabilities:
Current portion of debt	128.2		132.6
Accounts payable	756.8		812.8
Accrued compensation and benefits	171.9		224.4
Other current liabilities	221.4		190.7
Total current liabilities	1,278.30		1,360.50
Long-term debt due after one year	2,679.50		2,852.10
Pension liabilities, net of current portion	1,097		1,090.90
Postretirement benefit liabilities, net of current portion	100		101.7
Deferred income taxes	1,181		1,132.80
Other long-term liabilities	161		180.6
Commitments and contingencies (Note 12)
Redeemable noncontrolling interests	12.9		13.7
Equity:
Preferred stock, $0.01 par value; 50.0 million shares authorized; no shares outstanding	0		0
Class A common stock, $0.01 par value; 175.0 million shares authorized; 139.9 million and 140.0 million shares outstanding at December 31, 2014 and September 30, 2014, respectively	1.4		1.4
Capital in excess of par value	2,849.30		2,839.80
Retained earnings	2,054		1,960.90
Accumulated other comprehensive loss	-517.1	[1]	-495.3	[1]
Total Rock-Tenn Company shareholders’ equity	4,387.60		4,306.80
Noncontrolling interests	0.5		0.6
Total equity	4,388.10		4,307.40
Liabilities and Equity	$10,897.80		$11,039.70
[1]	All amounts are net of tax and noncontrolling interest.

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2014	Sep. 30, 2014
In Millions, except Share data, unless otherwise specified
Allowance for Doubtful Accounts Receivable, Current	$26.90	$25.10
Preferred Stock, Par or Stated Value Per Share	$0.01	$0.01
Preferred Stock, Shares Authorized	50,000,000	50,000,000
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$0.01	$0.01
Common Stock, Shares Authorized	175,000,000	175,000,000
Common Stock, Shares, Outstanding	139,900,000	140,000,000

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Operating activities:
Consolidated net income	$125.60	$110.60
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	151.8	143.2
Deferred income tax expense	58.9	51.5
Share-based compensation expense	10.7	9.5
Loss (gain) on disposal of plant, equipment and other, net	0.6	-2
Equity in income of unconsolidated entities	-2.2	-1.7
Pension and other postretirement funding less (more) than expense	4.6	-35.2
Impairment adjustments and other non-cash items	-2.9	4.1
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	94.8	171
Inventories	-19.1	4.2
Other assets	-5.4	-12.6
Accounts payable	-51.5	-76.6
Income taxes	-5.7	-7.6
Accrued liabilities and other	-27.8	-53.9
Net cash provided by operating activities	332.4	304.5
Investing activities:
Capital expenditures	-126.9	-100.6
Cash paid for purchase of business, net of cash acquired	0	-60
Return of capital from unconsolidated entities	0.2	0.2
Proceeds from sale of property, plant and equipment	3.5	3.3
Proceeds from property, plant and equipment insurance settlement	0	2.7
Net cash used for investing activities	-123.2	-154.4
Financing activities:
Additions to revolving credit facilities	39.4	20
Repayments of revolving credit facilities	-58.7	-21.9
Additions to debt	10.9	46.6
Repayments of debt	-165.6	-131.6
Commercial card program	-0.4	0
Debt issuance costs	-0.1	0
Issuances of common stock, net of related minimum tax withholdings	1.8	-5.9
Purchases of common stock	-8.7	-53
Excess tax benefits from share-based compensation	0	10.2
Advances from (repayments to) unconsolidated entity	0.5	-0.2
Cash dividends paid to shareholders	-26.3	-25.8
Cash distributions paid to noncontrolling interests	-1.2	-0.1
Net cash used for financing activities	-208.4	-161.7
Effect of exchange rate changes on cash and cash equivalents	-0.6	-0.2
Increase (decrease) in cash and cash equivalents	0.2	-11.8
Cash and cash equivalents at beginning of period	32.6	36.4
Cash and cash equivalents at end of period	32.8	24.6
Supplemental disclosure of cash flow information:
Income taxes, net of refunds	8.8	7.4
Interest, net of amounts capitalized	$5.60	$6.40

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (Parentheticals) (NPG Inc. [Member], USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
NPG Inc. [Member]
Fair value of assets acquired, including goodwill	$79.40
Cash consideration, net of cash acquired	59.5
Liabilities assumed	$19.90

General_Discussion_on_Notes_to

General Discussion on Notes to Consolidated Financial Statements	3 Months Ended
	Dec. 31, 2014
Notes to Condensed Consolidated Financial Statements [Abstract]
Nature of Operations	Unless the context otherwise requires, “we”, “us”, “our”, “RockTenn” and “the Company” refer to the business of Rock-Tenn Company, its wholly-owned subsidiaries and its partially-owned consolidated subsidiaries.
	We are one of North America’s leading providers of packaging solutions and manufacturers of containerboard and paperboard. We operate locations in the United States, Canada, Mexico, Chile, Argentina and Puerto Rico.

Interim_Financial_Statements

Interim Financial Statements	3 Months Ended
	Dec. 31, 2014
Interim Financial Statements [Abstract]
Interim Financial Statements	Interim Financial Statements
	Our independent public accounting firm has not audited our accompanying interim financial statements. We derived the Condensed Consolidated Balance Sheet at September 30, 2014 from the audited Consolidated Financial Statements included in Fiscal 2014 Form 10-K. In the opinion of our management, the Condensed Consolidated Financial Statements reflect all adjustments, which are of a normal recurring nature, necessary for a fair presentation of our statements of income for the three months ended December 31, 2014 and December 31, 2013, our comprehensive income for the three months ended December 31, 2014 and December 31, 2013, our financial position at December 31, 2014 and September 30, 2014, and our cash flows for the three months ended December 31, 2014 and December 31, 2013.
	We have condensed or omitted certain notes and other information from the interim financial statements presented in this Quarterly Report on Form 10-Q. Therefore, these interim statements should be read in conjunction with our Fiscal 2014 Form 10-K. The results for the three months ended December 31, 2014 are not necessarily indicative of results that may be expected for the full year.

New_Accounting_Standards

New Accounting Standards	3 Months Ended
	Dec. 31, 2014
New Accounting Standards [Abstract]
New Accounting Standards	New Accounting Standards
	Recently Adopted Standards
	In April 2014, the FASB issued ASU 2014-08 “Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity”. This ASU amends ASC 360 “Property Plant and Equipment” and expands the disclosures for discontinued operations, and requires new disclosures for disposals of individually significant components that do not meet the new definition of a discontinued operation and are classified as assets held for sale. These provisions are effective for annual and interim periods beginning after December 15, 2014 (January 1, 2015 for us). The adoptions of these provisions did not have a material effect on our consolidated financial statements.
	Recently Issued Standards
	In May 2014, the FASB issued ASU 2014-09 which is codified in ASC 606 “Revenue from Contracts with Customers” and supersedes both the revenue recognition requirement to ASC 605 “Revenue Recognition” and most industry-specific guidance. The core principle of ASC 606 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the five steps set forth in ASC 606. An entity must also disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative information about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. These provisions are effective for annual reporting periods beginning after December 15, 2016 (October 1, 2017 for us), including interim periods within that annual period, and can be applied using a full retrospective or modified retrospective approach. The Company is currently evaluating the impact of these provisions.
	In June 2014, the FASB issued ASU 2014-12 “Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period”. This ASU amends ASC 718 “Compensation - Stock Compensation” and clarifies that a performance target in a share-based payment that affects vesting and that could be achieved after the requisite service period should be accounted for as a performance condition and impact compensation cost when it is probable the performance target will be achieved. These provisions are effective for annual periods beginning after December 15, 2015 (October 1, 2016 for us) and based on our current stock compensation awards are not expected to have a material effect on our consolidated financial statements.

Equity_and_Other_Comprehensive

Equity and Other Comprehensive Income	3 Months Ended
	Dec. 31, 2014
Comprehensive Income and Equity [Abstract]
Comprehensive Income and Equity Note	Equity and Other Comprehensive Income
	Equity
	The following is a summary of the changes in total equity for the three months ended December 31, 2014 (in millions):
		Rock-Tenn			Noncontrolling (1)			Total
		Company			Interests			Equity
		Shareholders’
		Equity
	Balance at September 30, 2014	$	4,306.80		$	0.6		$	4,307.40
	Net income	125.1			0.1			125.2
	Other comprehensive loss, net of tax	(21.8		)	—			(21.8		)
	Compensation expense under share-based plans	10.7			—			10.7
	Cash dividends declared (per share - $0.1875)(2)	(26.3		)	—			(26.3		)
	Cash distributions to noncontrolling interests	—			(0.2		)	(0.2		)
	Issuance of Class A common stock, net of stock received for minimum tax withholdings	1.8			—			1.8
	Purchases of Class A common stock	(8.7		)	—			(8.7		)
	Balance at December 31, 2014	$	4,387.60		$	0.5		$	4,388.10
	(1)	Excludes amounts related to contingently redeemable noncontrolling interests which are separately classified outside of permanent equity in the mezzanine section of the Condensed Consolidated Balance Sheets.
	(2)	Includes cash dividends paid, and dividends declared but unpaid, related to the shares reserved but unissued to satisfy Smurfit-Stone bankruptcy claims.
	Stock Repurchase Plan
	Our board of directors has approved a stock repurchase plan that allows for the repurchase of shares of our Common Stock over an indefinite period of time at the discretion of our management. Our stock repurchase plan was last amended in September 2014 following the August 27, 2014 two-for-one stock split of our Common Stock in the form of a 100% stock dividend to shareholders of record as of August 12, 2014 (the “Stock Split”). The stock repurchase plan allows for the repurchase of up to a total of 16.9 million shares of Common Stock. Pursuant to our repurchase plan, in the three months ended December 31, 2014, we repurchased approximately 0.2 million shares for an aggregate cost of $8.7 million. As of December 31, 2014, we had approximately 8.5 million shares of Common Stock available for repurchase under the plan.
	Accumulated Other Comprehensive (Loss) Income
	The tables below summarize the changes in accumulated other comprehensive (loss) income, net of tax, by component for the three months ended December 31, 2014 and December 31, 2013 (in millions):
		Deferred Loss on Cash Flow Hedges			Defined Benefit Pension and Postretirement Plans			Foreign Currency Items			Total (1)
	Balance at September 30, 2014	$	(0.2	)	$	(498.2	)	$	3.1		$	(495.3	)
	Other comprehensive loss before reclassifications	—			(16.7		)	(17.5		)	(34.2		)
	Amounts reclassified from accumulated other comprehensive loss	—			12.4			—			12.4
	Net current period other comprehensive loss	—			(4.3		)	(17.5		)	(21.8		)
	Balance at December 31, 2014	$	(0.2	)	$	(502.5	)	$	(14.4	)	$	(517.1	)
	(1)     All amounts are net of tax and noncontrolling interest.
		Deferred Loss on Cash Flow Hedges			Defined Benefit Pension and Postretirement Plans			Foreign Currency Items			Total (1)
	Balance at September 30, 2013	$	(0.2	)	$	(332.9	)	$	32.5		$	(300.6	)
	Other comprehensive income (loss) before reclassifications	—			—			(9.2		)	(9.2		)
	Amounts reclassified from accumulated other comprehensive loss	—			2.5			—			2.5
	Net current period other comprehensive income (loss)	—			2.5			(9.2		)	(6.7		)
	Balance at December 31, 2013	$	(0.2	)	$	(330.4	)	$	23.3		$	(307.3	)
	(1)     All amounts are net of tax and noncontrolling interest.
	The net of tax components were determined using effective tax rates averaging approximately 38% to 39% for the three months ended December 31, 2014 and December 31, 2013, respectively. Foreign currency translation gains and losses recorded in accumulated other comprehensive (loss) income for the three months ended December 31, 2014 and December 31, 2013 were primarily due to the change in the Canadian/U.S. dollar exchange rates. For the three months ended December 31, 2014, we recorded defined benefit net actuarial losses and prior service costs, net of tax, in other comprehensive income of $2.8 million and $13.9 million, respectively, primarily due to the partial settlement, plan amendments and curtailment of certain defined benefit plans. The deferred income tax expense associated with the net actuarial losses and prior service costs was $1.7 million and $8.8 million, respectively. The amounts reclassified out of other comprehensive income into earnings for these events are summarized in the reclassifications table below. For the three months ended December 31, 2013, there were no defined benefit plan net actuarial gains, losses or prior service costs arising during the period.
	The following tables summarize the reclassifications out of accumulated other comprehensive loss by component (in millions):
		Three Months Ended									Three Months Ended
		31-Dec-14									December 31, 2013
		Pretax			Tax			Net of Tax			Pretax			Tax		Net of Tax
	Amortization of defined benefit pension and postretirement items (1)
	Actuarial losses (2)	$	(28.3	)	$	10.7		$	(17.6	)	$	(4.0	)	$	1.5	$	(2.5	)
	Prior service costs (2)	8.4			(3.2		)	5.2			—			—		—
	Total reclassifications for the period	$	(19.9	)	$	7.5		$	(12.4	)	$	(4.0	)	$	1.5	$	(2.5	)
	(1)	Amounts in parentheses indicate charges to earnings. Amounts pertaining to noncontrolling interests are excluded.
	(2)	These accumulated other comprehensive income components are included in the computation of net periodic pension cost (See “Note 11. Retirement Plans” for additional details).

Earnings_per_Share

Earnings per Share	3 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings Per Share	Earnings per Share
	Certain of our restricted stock awards are considered participating securities as they receive non-forfeitable rights to dividends at the same rate as Common Stock. As participating securities, we include these instruments in the earnings allocation in computing earnings per share under the two-class method described in ASC 260 “Earnings per Share”. The following table sets forth the computation of basic and diluted earnings per share under the two-class method and has been retroactively adjusted to reflect the Stock Split (in millions, except per share data):
		Three Months Ended
		December 31,
		2014			2013
	Basic earnings per share:
	Numerator:
	Net income attributable to Rock-Tenn Company shareholders	$	125.1		$	109.7
	Less: Distributed and undistributed income available to participating securities	(0.1		)	(0.1		)
	Distributed and undistributed income attributable to Rock-Tenn Company shareholders	$	125		$	109.6
	Denominator:
	Basic weighted average shares outstanding	140.3			144
	Basic earnings per share attributable to Rock-Tenn Company shareholders	$	0.89		$	0.76
	Diluted earnings per share:
	Numerator:
	Net income attributable to Rock-Tenn Company shareholders	$	125.1		$	109.7
	Less: Distributed and undistributed income available to participating securities	(0.1		)	(0.1		)
	Distributed and undistributed income attributable to Rock-Tenn Company shareholders	$	125		$	109.6
	Denominator:
	Basic weighted average shares outstanding	140.3			144
	Effect of dilutive stock options and non-participating securities	2.5			2.6
	Diluted weighted average shares outstanding	142.8			146.6
	Diluted earnings per share attributable to Rock-Tenn Company shareholders	$	0.88		$	0.75
	Weighted average shares includes approximately 0.3 million of reserved, but unissued shares at each of December 31, 2014 and December 31, 2013. These reserved shares will be distributed as claims are liquidated or resolved in accordance with the Smurfit-Stone Plan of Reorganization and Confirmation Order.
	Options and restricted stock in the amount of 0.8 million and 0.1 million common shares in the three months ended December 31, 2014 and December 31, 2013, respectively, were not included in computing diluted earnings per share because the effect would have been antidilutive.

Acquisitions_Notes

Acquisitions (Notes)	3 Months Ended
	Dec. 31, 2014
Business Acquisition [Line Items]
Business Combination Disclosure [Text Block]	Acquisitions
	AGI In-Store
	On August 29, 2014, we acquired the stock of AGI In-Store, a manufacturer of permanent point-of-purchase displays and fixtures to the consumer products and retail industries. The purchase price was $70.0 million net of cash acquired of $0.5 million, and an estimated working capital settlement. No debt was assumed. We acquired the AGI In-Store business as we believe it supports our strategy to provide a more holistic portfolio of innovative in-store marketing solutions, including “store-within-a-store” displays, and will enhance cross-selling opportunities and bolster our growing retail presence. We have included the results of AGI In-Store’s operations since the date of the acquisition in our condensed consolidated financial statements in our Merchandising Displays segment. The preliminary purchase price allocation for the acquisition included $26.0 million of customer relationship intangible assets, $13.2 million of goodwill and $5.8 million of liabilities. We are amortizing the customer relationship intangibles over 5 to 10.5 years on a straight-line basis because the amortization pattern was not reliably determinable. The fair value assigned to goodwill is primarily attributable to buyer-specific synergies expected to arise after the acquisition (e.g., enhanced reach of the combined organization and increased vertical integration) and the assembled work force of AGI In-Store. We expect to make an election under section 338(h)(10) of the Code that will increase our tax basis in the acquired assets for an as yet to be determined amount for consideration not to exceed $2.0 million. We are in the process of completing the estimated values of the assets acquired and liabilities assumed, and therefore the allocation of the purchase price is preliminary and subject to revision. We expect the goodwill and intangibles to be amortizable for income tax purposes.
	Tacoma Mill
	On May 16, 2014, we acquired certain assets and liabilities of the Tacoma Mill. The purchase price was $340.6 million including an estimate of the expected working capital settlement. We believe the Tacoma Mill, located in Tacoma, WA, is a strategic fit as the mill has improved our ability to satisfy West Coast customers and generate operating efficiencies across our containerboard system. We have included the results of the Tacoma Mill since the date of the acquisition in our condensed consolidated financial statements in our Corrugated Packaging segment. The preliminary purchase price allocation for the acquisition included $22.6 million for the fair value of an electrical cogeneration contract, $14.6 million of customer relationship intangible assets, $29.0 million of goodwill and $28.9 million of liabilities assumed. We are amortizing the electrical cogeneration contract over the contract life of 7.2 years and the customer relationship intangibles over 20.0 years based on a straight-line basis because the amortization pattern was not reliably determinable. The fair value assigned to goodwill is primarily attributable to buyer-specific synergies expected to arise after the acquisition (e.g., enhanced reach of the combined organization and synergies) and the assembled work force of the Tacoma Mill. We are in the process of finalizing the estimated values of the assets acquired and liabilities assumed and therefore the allocation of the purchase price is preliminary and subject to revision. We expect the goodwill and intangibles to be amortizable for income tax purposes.
	NPG
	On December 20, 2013, we acquired the stock of NPG, a specialty display company. The purchase price was $59.6 million, net of cash acquired of $1.7 million and a working capital settlement. We acquired the NPG business as we believe it is a strong strategic fit that will strengthen our displays business. We have included the results of NPG’s operations in our condensed consolidated financial statements in our Merchandising Displays segment. The purchase price allocation for the acquisition included $14.5 million of customer relationship intangible assets, $27.9 million of goodwill and $19.5 million of liabilities including approximately $0.6 million in debt. We are amortizing the customer relationship intangibles over 9 years based on a straight-line basis because the pattern was not reliably determinable. The fair value assigned to goodwill is primarily attributable to buyer-specific synergies expected to arise after the acquisition (e.g., enhanced reach of the combined organization and increased vertical integration) and the assembled work force of NPG. The goodwill and intangibles resulting from the acquisition will not be amortizable for tax purposes.

Restructuring_and_Other_Costs_

Restructuring and Other Costs, Net	3 Months Ended
	Dec. 31, 2014
Restructuring and Other Costs, Net [Abstract]
Restructuring and Other Costs, Net	Restructuring and Other Costs, Net
	Summary of Restructuring and Other Initiatives
	We recorded pre-tax restructuring and other costs, net, of $5.4 million and $17.6 million for the three months ended December 31, 2014 and December 31, 2013, respectively. Costs recorded in each period are not comparable since the timing and scope of the individual actions associated with a restructuring, an acquisition or an integration can vary. We discuss these charges in more detail below.
	When we close a facility, if necessary, we recognize an impairment charge primarily to reduce the carrying value of equipment or other property to their estimated fair value less cost to sell, and record charges for severance and other employee related costs. Any subsequent change in fair value less cost to sell prior to disposition is recognized as identified; however, no gain is recognized in excess of the cumulative loss previously recorded. At the time of each announced closure, we generally expect to record future charges for equipment relocation, facility carrying costs, costs to terminate a lease or contract before the end of its term and other employee related costs. Although specific circumstances vary, our strategy has generally been to consolidate our sales and operations into large well-equipped plants that operate at high utilization rates and take advantage of available capacity created by operational excellence initiatives. Therefore, we transfer a substantial portion of each plant’s assets and production to our other plants. We believe these actions have allowed us to more effectively manage our business.
	While restructuring costs are not charged to our segments and therefore do not reduce segment income, we highlight the segment to which the charges relate. The following table presents a summary of restructuring and other charges, net, related to active restructuring and other initiatives that we incurred during the three months ended December 31, 2014 and December 31, 2013, the cumulative recorded amount since we started the initiatives, and the total we expect to incur (in millions):
	Summary of Restructuring and Other Costs, Net
	Segment		Period		Net Property,				Severance			Equipment		Facility		Other		Total
					Plant and				and Other			and Inventory		Carrying		Costs
					Equipment (a)				Employee			Relocation		Costs
									Related			Costs
									Costs
	Corrugated		Current Qtr.		$	0.2			$	—		$	0.1	$	0.6	$	0.1	$	1
	Packaging(b)
			Prior Year Qtr.		1.5				—			1.3		1.1		0.1		4
			Cumulative		29.3				29.2			7.2		11.8		5.5		83
			Expected Total		29.3				29.2			7.3		13.8		5.5		85.1
	Consumer Packaging(c)		Current Qtr.		0.1				0.4			—		—		—		0.5
			Prior Year Qtr.		—				(0.1		)	—		—		—		(0.1		)
			Cumulative		4.5				2			0.5		0.4		0.2		7.6
			Expected Total		4.5				2			0.5		0.5		0.2		7.7
	Recycling(d)		Current Qtr.		0.1				—			—		0.3		0.8		1.2
			Prior Year Qtr.		3.4				(0.1		)	0.4		0.4		2.1		6.2
			Cumulative		12.1				1.3			0.8		2.8		7.4		24.4
			Expected Total		12.1				1.3			1.3		3.2		7.5		25.4
	Other(e)		Current Qtr.		—				—			—		—		2.7		2.7
			Prior Year Qtr.		—				—			—		—		7.5		7.5
			Cumulative		0.1				0.2			0.1		—		148.5		148.9
			Expected Total		0.1				0.2			0.1		—		148.5		148.9
	Total		Current Qtr.		$	0.4			$	0.4		$	0.1	$	0.9	$	3.6	$	5.4
			Prior Year Qtr.		$	4.9			$	(0.2	)	$	1.7	$	1.5	$	9.7	$	17.6
			Cumulative		$	46			$	32.7		$	8.6	$	15	$	161.6	$	263.9
			Expected Total		$	46			$	32.7		$	9.2	$	17.5	$	161.7	$	267.1
	(a)	We have defined “Net Property, Plant and Equipment” as used in this Note 6 to represent property, plant and equipment impairment losses, subsequent adjustments to fair value for assets classified as held for sale, subsequent (gains) or losses on sales of property, plant and equipment and related parts and supplies, and accelerated depreciation on such assets, if any.
	(b)	The Corrugated Packaging segment current quarter and prior year quarter charges primarily reflect on-going closure costs at previously closed facilities net of asset sales. The cumulative charges primarily reflect charges associated with the closure of corrugated container plants and the closure of the Matane, Quebec containerboard mill, including gains and losses associated with the sale of assets associated with the closures. We have transferred a substantial portion of each closed facility's production to our other facilities.
	(c)	The Consumer Packaging segment current quarter charges are primarily associated with the closure of a small converting facility and on-going closure activity at previously closed facilities including the Cincinnati, OH specialty recycled paperboard mill. The prior year quarter charges also primarily reflect on-going closure costs associated with previously closed facilities. The cumulative charges primarily reflect charges associated with the closure of converting facilities and a specialty recycled paperboard mill. We have transferred a substantial portion of each closed facility’s production to our other facilities.
	(d)	The Recycling segment current quarter charges are primarily associated with the on-going closure costs at previously closed facilities. The prior year quarter charges primarily reflect charges associated with a collection facility and on-going closure costs associated with previously closed facilities. The cumulative charges primarily reflect the charges associated with the closure of collection facilities including gains and losses associated with the sale of assets associated with the closures.
	(e)	The expenses in the “Other” segment primarily reflect costs that we consider as Corporate, including the “Other Costs” column that primarily reflects costs incurred as a result of the Smurfit-Stone Acquisition, such as merger integration expenses. Also included in the “Other” segment are insignificant costs related to our Merchandising Displays segment. The pre-tax charges in the “Other Costs” column are summarized below (in millions):
		Acquisition				Integration				Total
		Expenses				Expenses
	Current Qtr.	$	0.5			$	2.2			$	2.7
	Prior Year Qtr.	$	1.4			$	6.1			$	7.5
	Acquisition expenses include expenses associated with acquisitions, whether consummated or not, as well as litigation expenses associated with the Smurfit-Stone Acquisition, net of recoveries. Acquisition expenses primarily consist of advisory, legal, accounting, valuation and other professional or consulting fees. Integration expenses primarily reflect severance and other employee costs, professional services including work being performed to facilitate the Smurfit-Stone integration including information systems integration costs, lease expense and other costs. Due to the complexity and duration of the integration activities, the precise amount expected to be incurred has not been quantified above. We expect integration activities related to the Smurfit-Stone Acquisition to continue during fiscal 2015.
	The following table represents a summary of and the changes in the restructuring accrual, which is primarily composed of lease commitments, accrued severance and other employee costs, and a reconciliation of the restructuring accrual charges to the line item “Restructuring and other costs, net” on our Condensed Consolidated Statements of Income (in millions):
		Three Months Ended
		December 31,
		2014				2013
	Accrual at beginning of fiscal year	$	10.9			$	21.8
	Additional accruals	0.2				1.1
	Payments	(2.7		)		(6.7		)
	Adjustment to accruals	0.9				(0.5		)
	Accrual at December 31	$	9.3			$	15.7
	Reconciliation of accruals and charges to restructuring and other costs, net:
		Three Months Ended
		December 31,
		2014				2013
	Additional accruals and adjustments to accruals (see table above)	$	1.1			$	0.6
	Acquisition expenses	0.5				1.4
	Integration expenses	2.1				5.8
	Net property, plant and equipment	0.4				4.9
	Severance and other employee expense	0.4				0.6
	Equipment and inventory relocation costs	0.1				1.7
	Facility carrying costs	0.9				1.5
	Other (income) expense	(0.1		)		1.1
	Total restructuring and other costs, net	$	5.4			$	17.6

Income_Taxes

Income Taxes	3 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Tax Provision	Income Taxes
	The effective tax rates for the three months ended December 31, 2014 and December 31, 2013 were 33.0% and 35.8%, respectively. The effective tax rates for the three months ended December 31, 2014 and December 31, 2013, respectively, were different than the statutory rate primarily due to the impact of state taxes, the ability to claim the domestic manufacturer’s deduction against U.S. taxable earnings and a lower tax rate with respect to foreign earnings.

Inventories

Inventories	3 Months Ended
	Dec. 31, 2014
Inventories [Abstract]
Inventories	Inventories
	We value substantially all of our U.S. inventories at the lower of cost or market, with cost determined on the LIFO inventory valuation method, which we believe generally results in a better matching of current costs and revenues than under the FIFO inventory valuation method. In periods of increasing costs, the LIFO method generally results in higher cost of goods sold than under the FIFO method. In periods of decreasing costs, the results are generally the opposite. Since LIFO is designed for annual determinations, it is possible to make an actual valuation of inventory under the LIFO method only at the end of each fiscal year based on the inventory levels and costs at that time. Accordingly, we base interim LIFO estimates on management’s projection of expected year-end inventory levels and costs. We value all other inventories at the lower of cost or market, with cost determined using methods which approximate cost computed on a FIFO basis. These other inventories represent primarily foreign inventories and certain inventoried spare parts and supplies inventories. Inventories were as follows (in millions):
		December 31,			September 30,
		2014			2014
	Finished goods and work in process	$	422.9		$	421.8
	Raw materials	473.6			465.7
	Spare parts and supplies	223.7			225.3
	Inventories at FIFO cost	1,120.20			1,112.80
	LIFO reserve	(88.3		)	(83.6		)
	Net inventories	$	1,031.90		$	1,029.20

Debt

Debt	3 Months Ended
	Dec. 31, 2014
Debt [Abstract]
Debt Disclosure	Debt
	At December 31, 2014, our Credit Facility and Our Notes were unsecured. For more information regarding certain of our debt characteristics, see “Note 8. Debt” of the Notes to Consolidated Financial Statements section of the Fiscal 2014 Form 10-K. The following were individual components of debt (in millions):
		December 31,		September 30,
		2014		2014
	4.45% notes due March 2019	$	349.8	$	349.8
	3.50% notes due March 2020	348		347.9
	4.90% notes due March 2022	399.4		399.4
	4.00% notes due March 2023	347.1		347
	Term loan facility	947.5		947.5
	Revolving credit and swing facilities	98.2		120.3
	Receivables-backed financing facility	305		460
	Other debt	12.7		12.8
	Total debt	2,807.70		2,984.70
	Less current portion of debt	128.2		132.6
	Long-term debt due after one year	$	2,679.50	$	2,852.10
	A portion of the debt classified as long-term, principally our Credit Facility and Receivables Facility, may be paid down earlier than scheduled at our discretion without penalty. Certain restrictive covenants govern our maximum availability under the Credit Facility and Receivables Facility. We test and report our compliance with these covenants as required and are in compliance with all of our covenants at December 31, 2014.
	Term Loan and Revolving Credit Facility
	On September 27, 2012, we entered into a Credit Facility with an original maximum principal amount of approximately $2.7 billion before scheduled payments. The Credit Facility includes a $1.475 billion, 5-year revolving credit facility and a $1.223 billion amended maximum principal amount, 5-year term loan facility. At December 31, 2014, we had $40.9 million of outstanding letters of credit not drawn upon and available borrowings under the revolving credit portion of the Credit Facility were approximately $1.4 billion.
	Receivables-Backed Financing Facility
	On September 15, 2014, we amended our Receivables Facility and extended the maturity date from December 18, 2015 to October 24, 2017, and continued the size of the facility at $700.0 million. The borrowing rate, which consists of a blend of the market rate for asset-backed commercial paper and the one month LIBOR rate plus a utilization fee, was 0.90% and 0.89% as of December 31, 2014 and September 30, 2014, respectively. The commitment fee for this facility was 0.25% and 0.25% as of December 31, 2014 and September 30, 2014, respectively. At December 31, 2014 and September 30, 2014, maximum available borrowings, excluding amounts outstanding, under this facility were approximately $620.4 million and $647.7 million, respectively. The carrying amount of accounts receivable collateralizing the maximum available borrowings at December 31, 2014 was approximately $803.6 million. We have continuing involvement with the underlying receivables as we provide credit and collections services pursuant to the securitization agreement.
	Proposed Merger
	Our Credit Facility and Receivables Facility include “change of control” default/termination provisions and, accordingly, we anticipate refinancing or amending them in connection with the consummation of the proposed transaction with MeadWestvaco.  Although we believe will be able to obtain any necessary amendments or refinancings at a reasonable cost, there can be no assurance that we will succeed in obtaining such amendments or refinancings. In addition, our Senior Notes require us to make a change of control offer at 101% of the aggregate principal amount thereof, plus accrued and unpaid interest, upon the occurrence of both a change of control and a related down-grade to non-investment grade (or a related withdrawal of the investment grade rating) by both S&P and Moody’s rating agencies within sixty days of the change of control or the public announcement thereof.  We do not currently anticipate a ratings event that would trigger the obligation to make a change of control offer in respect of the Senior Notes but there can be no assurance that such a ratings event will not occur in connection with the transaction or otherwise.

Fair_Value

Fair Value	3 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value	Fair Value
	Assets and Liabilities Measured or Disclosed at Fair Value
	We estimate fair values in accordance with ASC 820 “Fair Value Measurement”. ASC 820 provides a framework for measuring fair value and expands disclosures required about fair value measurements. Specifically, ASC 820 sets forth a definition of fair value and a hierarchy prioritizing the inputs to valuation techniques. ASC 820 defines fair value as the price that would be received from the sale of an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Additionally, ASC 820 defines levels within the hierarchy based on the availability of quoted prices for identical items in active markets, similar items in active or inactive markets and valuation techniques using observable and unobservable inputs. We incorporate credit valuation adjustments to reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in our fair value measurements.
	We disclose the fair value of our pension and postretirement assets and liabilities in our Fiscal 2014 Form 10-K and the fair value of our long-term debt below. We have, or from time to time may have, supplemental retirement savings plans that are nonqualified deferred compensation plans pursuant to which assets are invested primarily in mutual funds, interest rate derivatives, commodity derivatives or other similar classes of assets or liabilities, the fair value of which are not significant.
	The following table summarizes the carrying amount and estimated fair value of our long-term debt (in millions):
		December 31, 2014				September 30, 2014
		Carrying		Fair		Carrying		Fair
		Amount		Value		Amount		Value
	March 2019 Notes(1)	$	349.8	$	371.8	$	349.8	$	376.1
	March 2020 Notes(1)	348		354.4		347.9		357.5
	March 2022 Notes(1)	399.4		430.3		399.4		430
	March 2023 Notes(1)	347.1		355.4		347		357.9
	Term loan facilities(2)	947.5		947.5		947.5		947.5
	Revolving credit and swing facilities(2)	98.2		98.2		120.3		120.3
	Receivables-backed financing facility(2)	305		305		460		460
	Other debt(2)(3)	12.7		12.9		12.8		13
	Total debt	$	2,807.70	$	2,875.50	$	2,984.70	$	3,062.30
	-1	Fair value is categorized as level 2 within the fair value hierarchy since the notes trade infrequently. Fair value is based on quoted market prices.
	-2	Fair value approximates the carrying amount as the variable interest rates reprice frequently at observable current market rates. As such, fair value is categorized as level 2 within the fair value hierarchy.
	-3	Fair value for certain debt is estimated based on the discounted value of future cash flows using observable current market interest rates offered for debt of similar credit risk and maturity. As such, fair value is categorized as level 2 within the fair value hierarchy.
	In the absence of quoted prices in active markets, considerable judgment is required in developing estimates of fair value. Estimates are not necessarily indicative of the amounts we could realize in a current market transaction, or the amounts at which we could settle our debt.
	Accounts Receivable Sales Agreement
	During the first quarter of fiscal 2014, we entered into an agreement (the “A/R Sales Agreement”), to sell to a third party financial institution all of the short term receivables generated from certain customer trade accounts, on a revolving basis, until the agreement is terminated by either party. Transfers under this agreement meet the requirements to be accounted for as sales in accordance with the “Transfers and Servicing” guidance in ASC 860. On February 3, 2014, the A/R Sales Agreement was amended to increase the maximum amount of receivables that may be sold at any point in time to $205 million. During the three months ended December 31, 2014, we sold and derecognized $219.4 million of receivables, $219.8 million of receivables were collected by the third party financial institution, we received $6.4 million from the third-party financial institution and decreased our receivable from the financial institution from $10.4 million at September 30, 2014 to $3.6 million at December 31, 2014. During the three months ended December 31, 2013, we derecognized $98.5 million of receivables, of which $33.5 million was collected by the third party financial institution. The remaining $65.0 million represents the net sale of receivables sold as of December 31, 2013 which were funded by the third-party financial institution. Cash proceeds related to these sales are included in cash from operating activities in the condensed consolidated statement of cash flows in the accounts receivable line item. The loss on sale is not material as it is currently less than 1% per annum of the receivables sold, and is included in other income and expense.
	Although the sales are made without recourse, we maintain continuing involvement with the sold receivables as we provide collections services related to the transferred assets. The associated servicing liability is not material given the high quality of the customers underlying the receivables and the anticipated short collection period.
	Financial Instruments not Recognized at Fair Value
	Financial instruments not recognized at fair value on a recurring or nonrecurring basis include cash and cash equivalents, accounts receivable, certain other current assets, short-term debt, accounts payable, certain other current liabilities, and long-term debt. With the exception of long-term debt, the carrying amounts of these financial instruments approximate their fair values due to their short maturities.
	Fair Value of Nonfinancial Assets and Nonfinancial Liabilities
	We measure certain nonfinancial assets and liabilities at fair value on a nonrecurring basis. These assets and liabilities include cost and equity method investments when they are deemed to be other-than-temporarily impaired, assets acquired and liabilities assumed in an acquisition or in a nonmonetary exchange, and property, plant and equipment and intangible assets that are written down to fair value when they are held for sale or determined to be impaired. During the three months ended December 31, 2014 and December 31, 2013, we did not have any significant nonfinancial assets or nonfinancial liabilities that were measured at fair value on a nonrecurring basis in periods subsequent to initial recognition.

Retirement_Plans

Retirement Plans	3 Months Ended
	Dec. 31, 2014
Retirement Plans [Abstract]
Retirement Plans	Retirement Plans
	We have defined benefit pension plans and other postretirement plans primarily for certain U.S. and Canadian employees. In addition, under several labor contracts, we make payments, based on hours worked, into multiemployer pension plan trusts established for the benefit of certain collective bargaining employees in facilities both inside and outside the U.S. We also have a SERP and other non-qualified defined benefit pension plans that provide unfunded supplemental retirement benefits to certain of our executives and former executives. The SERP provides for incremental pension benefits in excess of those offered in our principal pension plan. For more information regarding our retirement plans see “Note 12. Retirement Plans” of the Notes to Consolidated Financial Statements section of the Fiscal 2014 Form 10-K.
	The following table represents a summary of the components of net pension cost (in millions):
		Three Months Ended
		December 31,
		2014			2013
	Service cost	$	7.7		$	7.9
	Interest cost	49.6			55
	Expected return on plan assets	(65.0		)	(63.9		)
	Amortization of net actuarial loss	8.7			4.3
	Amortization of prior service cost	0.3			0.3
	Settlement loss recognized	20			—
	Company defined benefit plan expense	21.3			3.6
	Multiemployer and other plans	1.3			1.5
	Net pension cost	$	22.6		$	5.1
	During the three months ended December 31, 2014, we contributed an aggregate of $6.4 million to our qualified and supplemental defined benefit pension plans. Based on our current assumptions, we estimate contributing approximately $159 million in fiscal 2015 to our qualified and supplemental defined benefit pension plans excluding the impact of the proposed transaction with MeadWestvaco and other future business combinations, the occurrence of which could cause our estimate to change materially. However, it is possible that our assumptions may change, actual market performance may vary or we may decide to contribute additional amounts. During the three months ended December 31, 2013, we contributed an aggregate of $37.2 million to our qualified and supplemental defined benefit pension plans.
	During the first quarter of fiscal 2015 we partially settled obligations of one of our defined benefit pension plans through lump sum payments to certain eligible former employees who were not currently receiving a monthly benefit. Eligible former employees whose present value of future pension benefits exceed a certain minimum threshold had the option to either voluntarily accept or not accept the offer (the “Pension Offer”) and continue to be entitled to their monthly benefit upon retirement. Former employees with an aggregate pension benefit obligation of $163.7 million accepted the Pension Offer. Lump sum payments of $135.1 million were made out of existing plan assets. The settlement resulted in a gain of $28.6 million which was more than offset by the loss on remeasurement of the pension benefit obligation of approximately $32.5 million that was primarily due to the impact of a lower discount rate and mortality table changes. As a result we recorded a net $3.9 million loss to other comprehensive income. The settlement also resulted in a $20.0 million pre-tax non-cash charge to earnings which is included in the line item “Pension lump sum settlement and retiree medical curtailment, net” on our Condensed Consolidated Statements of Income. The impact of the settlement is included in the net periodic pension cost table above. As a result of the remeasurement, the pension benefit obligation increased $22.1 million due to changes in coverage for certain employees covered by the United Steelworkers master agreement, with an offset recorded to the unrecognized prior service cost component of other comprehensive income.
	The postretirement benefit plans provide certain health care and life insurance benefits for certain salaried and hourly employees who meet specified age and service requirements as defined by the plans. The following table represents a summary of the components of the postretirement benefits costs (in millions):
		Three Months Ended
		December 31,
		2014			2013
	Service cost	$	0.1		$	0.3
	Interest cost	1.2			1.5
	Amortization of net actuarial gain	(0.3		)	(0.2		)
	Amortization of prior service credit	(0.5		)	(0.3		)
	Curtailment gain recognized	(8.1		)	—
	Postretirement plan (income) expense	$	(7.6	)	$	1.3
	During the three months ended December 31, 2014 and December 31, 2013, we contributed an aggregate of $2.7 million and $2.9 million, respectively, to our postretirement benefit plans.
	During the quarter we entered into a master agreement with the United Steelworkers Union that applies to substantially all of our facilities they represent. The agreement covers a number of specific items such as wages, medical coverage and certain other benefit programs. During the first quarter of fiscal 2015, changes in retiree medical coverage for certain employees covered by the United Steelworkers master agreement resulted in the recognition of a $8.1 million pre-tax non-cash curtailment gain included in the line item “Pension lump sum settlement and retiree medical curtailment, net” on our Condensed Consolidated Statements of Income. The aggregate postretirement benefit obligation decreased $0.9 million as a result of the curtailment.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Dec. 31, 2014
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Environmental and Other Matters
	Environmental compliance requirements are a significant factor affecting our business. We employ processes in the manufacture of pulp, paperboard and other products which result in various discharges, emissions and wastes. These processes are subject to numerous federal, state, local and foreign environmental laws and regulations. We operate and expect to continue to operate, under environmental permits and similar authorizations from various governmental authorities that regulate such discharges, emissions and wastes. Environmental programs in the U.S. are primarily established, administered and enforced at the federal level by the EPA. In addition, many of the jurisdictions in which we operate have adopted equivalent or more stringent environmental laws and regulations or have enacted their own parallel environmental programs.
	In 2004, the EPA promulgated a MACT regulation that established air emissions standards and other requirements for industrial, commercial and institutional boilers. The rule was challenged by third parties in litigation, and in 2007, the United States Court of Appeals for the D. C. Circuit issued a decision vacating and remanding the rule to the EPA. Under court order, the EPA published a set of four interrelated rules in March 2011, commonly referred to as Boiler MACT. The EPA also published notice in March 2011 that it would reconsider certain aspects of Boiler MACT in order to address “difficult technical issues” raised during the public comment period. On December 20, 2012, the EPA took final action on its proposed reconsideration of certain provisions of the March 2011 Boiler MACT rules. The Boiler MACT reconsideration rules included certain adjustments based on the EPA’s review of existing and new data provided after the March 2011 standards were issued. For the Company’s boilers where capital may be necessary for compliance, the final December 2012 rule requires compliance by January 31, 2016, subject to a possible one-year extension. Several environmental, industry and other groups have filed legal challenges to the December 2012 final Boiler MACT rules. We cannot predict with certainty how any of the legal challenges will impact our Boiler MACT strategies and costs.
	Certain jurisdictions in which the Company has manufacturing facilities or other investments have taken actions to address climate change. In the U.S., the EPA has issued the Clean Air Act permitting regulations applicable to certain facilities that emit GHG. However, on June 23, 2014, the U.S. Supreme Court issued a decision holding that the EPA may not treat GHG emissions as an air pollutant for purposes of determining whether a source is a major source required to obtain a PSD or Title V permit. The Supreme Court also said that the EPA could continue to require that PSD permits otherwise required based on emissions of conventional pollutants contain limitations on GHG emissions based on the application of best available control technology. The EPA is continuing to examine the implications of the Supreme Court’s decision, including how the EPA will need to revise its permitting regulations and related impacts to state programs. The EPA also has promulgated a rule requiring facilities that emit 25,000 metric tons or more of carbon dioxide equivalent per year to file an annual report of their emissions. Some U.S. states and Canadian provinces in which RockTenn has manufacturing operations are also taking measures to reduce GHG emissions. For example, Quebec, has become a member of the Western Climate Initiative, which is a collaboration among California and certain Canadian provinces, Mexican states and tribes that have joined together to create a cap-and-trade program to reduce GHG emissions. On November 18, 2009, Quebec adopted a target of reducing GHG emissions by 20% below 1990 levels by 2020. In December 2011, Quebec issued a final regulation establishing a regional cap-and-trade program that required reductions in GHG emissions from covered emitters as of January 1, 2013. Enactment of the Quebec cap-and-trade program may require expenditures to meet required GHG emission reduction requirements in future years. Such requirements also may increase energy costs above the level of general inflation and result in direct compliance and other costs. However, we do not believe that compliance with the requirements of the new cap-and-trade program will have a material adverse effect on our operations or financial condition. We have systems in place for tracking the GHG emissions from our energy-intensive facilities, and we carefully monitor developments in climate change laws, regulations and policies to assess the potential impact of such developments on our operations and financial condition.
	In addition to Boiler MACT and GHG, the EPA has finalized a number of other environmental rules that may impact the pulp and paper industry, including National Ambient Air Quality Standards for nitrogen oxide, sulfur dioxide and fine particulate matter. The EPA is also revising existing environmental standards and developing several new rules that may apply to the industry in the future. We cannot currently predict with certainty how any future changes in environmental laws, regulations and/or enforcement practices will affect our business; however, it is possible that our compliance with new environmental standards may require substantial additional capital expenditures and/or operating costs could increase materially.
	On October 1, 2010, our Hopewell, VA containerboard mill received a NOV from EPA Region III alleging certain violations of regulations that require treatment of kraft pulping condensates. The Company and the government have agreed in principle on the terms of the settlement to resolve the allegations set forth in the NOV. We expect to finalize the settlement in the next calendar quarter and do not believe that any fines or compliance obligations required as a condition of settlement will have a significant adverse effect on our results of operations, financial condition or cash flows. We also are involved in various other administrative proceedings relating to environmental matters that arise in the normal course of business. Although the ultimate outcome of such matters cannot be predicted with certainty and we cannot at this time estimate any reasonably possible losses, management does not believe that the currently expected outcome of any environmental proceedings and claim that are pending or threatened against us will have a material adverse effect on our results of operations, financial condition or cash flows.
	We also face potential liability under CERCLA and analogous state laws as a result of releases, or threatened releases, of hazardous substances into the environment from various sites owned and operated by third parties at which Company-generated wastes have allegedly been deposited. Generators of hazardous substances sent to off-site disposal locations at which environmental problems exist, as well as the owners of those sites and certain other classes of persons, all of whom are referred to as PRPs and are, in most instances, subject to joint and several liability for response costs for the investigation and remediation of such sites under CERCLA and analogous state laws, regardless of fault or the lawfulness of the original disposal. Liability is typically shared with other PRPs and costs are commonly allocated according to relative amounts of waste deposited and other factors.
	On January 26, 2009, Smurfit-Stone and certain of its subsidiaries filed a voluntary petition for relief under Chapter 11 of the U.S. Bankruptcy Code. Smurfit-Stone’s Canadian subsidiaries also filed to reorganize in Canada. We believe that matters relating to previously identified third party PRP sites and certain facilities formerly owned or operated by Smurfit-Stone have been or will be satisfied claims in the Smurfit-Stone bankruptcy proceedings. However, we may face additional liability for cleanup activity at sites that existed prior to bankruptcy discharge, but are not currently identified. Some of these liabilities may be satisfied from existing bankruptcy reserves. We may also face liability under CERCLA and analogous state and other laws at other ongoing and future remediation sites where we may be a PRP. In addition to the above mentioned sites, certain of our current or former locations are being studied or remediated under various environmental laws and regulations. Based on current facts and assumptions, we do not believe that the costs of these projects will have a material adverse effect on our results of operations, financial condition or cash flows. However, the discovery of additional contamination or the imposition of additional obligations at these or other sites in the future could result in additional costs.
	We believe that we can assert claims for indemnification pursuant to existing rights we have under settlement and purchase agreements in connection with certain of our existing remediation sites. However, there can be no assurance that we will be successful with respect to any claim regarding these indemnification rights or that, if we are successful, any amounts paid pursuant to the indemnification rights will be sufficient to cover all our costs and expenses. We also cannot predict with certainty whether we will be required to perform remediation projects at other locations, and it is possible that our remediation requirements and costs could increase materially in the future and exceed current reserves. In addition, we cannot currently assess with certainty the impact that future federal, state or other environmental laws, regulations or enforcement practices will have on our results of operations, financial condition or cash flows.
	Our operations are subject to federal, state, local and foreign laws and regulations relating to workplace safety and worker health including OSHA and related regulations. OSHA, among other things, establishes asbestos and noise standards and regulates the use of hazardous chemicals in the workplace. Although we do not use asbestos in manufacturing our products, some of our facilities contain asbestos. For those facilities where asbestos is present, we believe we have properly contained the asbestos and/or we have conducted training of our employees in an effort to ensure that no federal, state or local rules or regulations are violated in the maintenance of our facilities. We do not believe that future compliance with health and safety laws and regulations will have a material adverse effect on our results of operations, financial condition or cash flows.
	As of December 31, 2014, we had approximately $4.3 million reserved for environmental liabilities on an undiscounted basis, of which $2.7 million is included in other long-term liabilities and $1.6 million in other current liabilities. We believe the liability for these matters was adequately reserved at December 31, 2014.
	Litigation
	In late 2010, Smurfit-Stone was one of nine U.S. and Canadian containerboard producers named as defendants in a lawsuit, in the U.S. District Court of the Northern District of Illinois, alleging that these producers violated the Sherman Act by conspiring to limit the supply and fix the prices of containerboard from mid-2005 through November 8, 2010 (“Antitrust Litigation”). RockTenn CP, LLC, as the successor to Smurfit-Stone, is a defendant with respect to the period after Smurfit-Stone’s discharge from bankruptcy in June 30, 2010 through November 8, 2010. The complaint seeks treble damages and costs, including attorney’s fees. The defendants’ motions to dismiss the complaint were denied by the court in April 2011. We believe the allegations are without merit and will defend this lawsuit vigorously. However, at this stage of the litigation, we are unable to predict the ultimate outcome or estimate a range of reasonably possible losses.
	We are a defendant in a number of other lawsuits and claims arising out of the conduct of our business. While the ultimate results of such suits or other proceedings against us cannot be predicted with certainty, management believes the resolution of these other matters will not have a material adverse effect on our consolidated financial condition, results of operations or cash flows.
	Guarantees
	We have made the following guarantees as of December 31, 2014:
	•	we have a 49% ownership interest in Seven Hills. The joint venture partners guarantee funding of net losses in proportion to their share of ownership;
	•	we have a wood chip processing contract with minimum purchase commitments which expires in 2017. As part of the agreement, we guarantee the third party contractors’ debt outstanding and have a security interest in the chipping equipment. At December 31, 2014, the maximum potential amount of future payments related to the guarantee was approximately $5 million, which decreases ratably over the life of the contract. In the event the guarantee on the contract is called, proceeds from the liquidation of the chipping equipment would be based on current market conditions and we may not recover in full the guarantee payments made;
	•	as part of acquisitions we have acquired unconsolidated entities for which we guarantee approximately $4 million in debt, primarily for bank loans; and
	•	we lease certain manufacturing and warehousing facilities and equipment under various operating leases. A substantial number of these leases require us to indemnify the lessor in the event that additional taxes are assessed due to a change in the tax law. We are unable to estimate our maximum exposure under these leases because it is dependent on changes in the tax law.
	Seven Hills Option
	Seven Hills commenced operations on March 29, 2001. Our partner in the Seven Hills joint venture has the option to require us to purchase its interest in Seven Hills, at a formula price, effective on the sixth or any subsequent anniversary of the commencement date by providing us notice two years prior to any such anniversary. The earliest date on which we could be required to purchase our partner’s interest is March 29, 2017. We have not recorded any liability for this unexercised option. We currently project this contingent obligation to purchase our partner’s interest (based on the formula) to be approximately $8 million at December 31, 2014, which would result in a purchase price of approximately 49% of our partner’s net equity reflected on Seven Hills’ December 31, 2014 balance sheet.

Segment_Information

Segment Information	3 Months Ended
	Dec. 31, 2014
Segment Information [Abstract]
Segment Information	Segment Information
	We report our results of operations in the following four reportable segments: Corrugated Packaging, consisting of our containerboard mills and our corrugated converting operations; Consumer Packaging, consisting of our coated and uncoated paperboard mills and consumer packaging converting operations; Merchandising Displays, consisting of our display and contract packaging services; and Recycling, which consists of our recycled fiber brokerage and collection operations. Certain income and expenses are not allocated to our segments and, thus, the information that management uses to make operating decisions and assess performance does not reflect such amounts. Items not allocated to segments are reported as non-allocated expenses or in other line items in the table below after segment income.
	The following table shows selected operating data for our segments (in millions):
		Three Months Ended
		December 31,
		2014			2013
	Net sales (aggregate):
	Corrugated Packaging	$	1,768.20		$	1,651.90
	Consumer Packaging	478.8			472.1
	Merchandising Displays	238.2			184.6
	Recycling	80.3			99.6
	Total	$	2,565.50		$	2,408.20
	Less net sales (intersegment):
	Corrugated Packaging	$	32.5		$	29.7
	Consumer Packaging	7.5			5.7
	Merchandising Displays	5.9			4.4
	Recycling	5.4			5.8
	Total	$	51.3		$	45.6
	Net sales (unaffiliated customers):
	Corrugated Packaging	$	1,735.70		$	1,622.20
	Consumer Packaging	471.3			466.4
	Merchandising Displays	232.3			180.2
	Recycling	74.9			93.8
	Total	$	2,514.20		$	2,362.60
	Segment income:
	Corrugated Packaging	$	183.1		$	157.7
	Consumer Packaging	52.6			57.6
	Merchandising Displays	6.4			19.3
	Recycling	1.8			0.1
	Segment income	243.9			234.7
	Pension lump sum settlement and retiree medical curtailment, net	(11.9		)	—
	Restructuring and other costs, net	(5.4		)	(17.6		)
	Non-allocated expenses	(15.9		)	(20.0		)
	Interest expense	(23.3		)	(24.0		)
	Interest income and other income (expense), net	0.2			(0.8		)
	Income before income taxes	187.6			172.3
	Income tax expense	(62.0		)	(61.7		)
	Consolidated net income	125.6			110.6
	Less: Net income attributable to noncontrolling interests	(0.5		)	(0.9		)
	Net income attributable to Rock-Tenn Company shareholders	$	125.1		$	109.7

Selected_Consolidating_Financi

Selected Consolidating Financial Statements of Parent, Guarantors and Non-Guarantors	3 Months Ended
	Dec. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Financial Statements for Parent, Guarantors and Non-Guarantors [Text Block]
		Selected Consolidating Financial Statements of Parent, Guarantors and Non-Guarantors
	The Company’s Senior Notes are fully and unconditionally guaranteed on a joint and several basis by our Guarantor Subsidiaries. The total assets, stockholders’ equity, revenues, earnings and cash flows from operating activities of the Guarantor Subsidiaries reflect the majority of the consolidated total of such items as of or for the periods reported. The Non-Guarantor Subsidiaries include: foreign operations in Canada, Mexico, Chile, Argentina, Puerto Rico and China, certain non-operating U.S. subsidiaries and joint ventures not 100% owned.
	In accordance with Rule 3-10 of Regulation S-X, the following tables present condensed consolidating financial statements including the Parent, the Guarantor Subsidiaries, the Non-Guarantor Subsidiaries and eliminations. Such financial statements include the Condensed Consolidating Statements of Income for the three months ended December 31, 2014 and December 31, 2013, Condensed Consolidating Balance Sheets as of December 31, 2014 and September 30, 2014 and Condensed Consolidating Statements of Cash Flows for the three months ended December 31, 2014 and December 31, 2013.
	CONDENSED CONSOLIDATING STATEMENTS OF INCOME
		Three Months Ended December 31, 2014
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	Net sales	$	—		$	2,290.40		$	410.1		$	(186.3	)	$	2,514.20
	Cost of goods sold	—			1,870.00			327.9			(153.2		)	2,044.70
	Gross profit	—			420.4			82.2			(33.1		)	469.5
	Selling, general and administrative expenses	—			211.8			31.9			—			243.7
	Pension lump sum settlement and retiree medical curtailment, net	—			11.9			—			—			11.9
	Restructuring and other costs, net	—			5.1			0.3			—			5.4
	Operating profit	—			191.6			50			(33.1		)	208.5
	Interest expense	(23.2		)	(0.4		)	(4.5		)	4.8			(23.3		)
	Interest income and other income (expense), net	1.2			(29.5		)	0.2			28.3			0.2
	Equity in income of unconsolidated entities	—			2.2			—			—			2.2
	Equity in income of consolidated entities	138.5			27.8			—			(166.3		)	—
	Income before income taxes	116.5			191.7			45.7			(166.3		)	187.6
	Income tax benefit (expense)	8.6			(56.6		)	(14.0		)	—			(62.0		)
	Consolidated net income	125.1			135.1			31.7			(166.3		)	125.6
	Less: Net income attributable to noncontrolling interests	—			(0.3		)	(0.2		)	—			(0.5		)
	Net income attributable to Rock-Tenn Company shareholders	$	125.1		$	134.8		$	31.5		$	(166.3	)	$	125.1
	Comprehensive income attributable to Rock-Tenn Company shareholders	$	103.3		$	113.7		$	15.7		$	(129.4	)	$	103.3
	CONDENSED CONSOLIDATING STATEMENTS OF INCOME
		Three Months Ended December 31, 2013
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	Net sales	$	—		$	2,141.80		$	383.7		$	(162.9	)	$	2,362.60
	Cost of goods sold	—			1,731.90			313.9			(131.0		)	1,914.80
	Gross profit	—			409.9			69.8			(31.9		)	447.8
	Selling, general and administrative expenses	0.5			207.3			27			—			234.8
	Restructuring and other costs, net	0.2			16.4			1			—			17.6
	Operating profit	(0.7		)	186.2			41.8			(31.9		)	195.4
	Interest expense	(22.5		)	(1.4		)	(7.2		)	7.1			(24.0		)
	Interest income and other income (expense), net	2.2			(27.5		)	(0.3		)	24.8			(0.8		)
	Equity in income of unconsolidated entities	—			1.7			—			—			1.7
	Equity in income of consolidated entities	122.5			17.8			—			(140.3		)	—
	Income before income taxes	101.5			176.8			34.3			(140.3		)	172.3
	Income tax benefit (expense)	8.2			(59.8		)	(10.1		)	—			(61.7		)
	Consolidated net income	109.7			117			24.2			(140.3		)	110.6
	Less: Net income attributable to noncontrolling interests	—			(0.7		)	(0.2		)	—			(0.9		)
	Net income attributable to Rock-Tenn Company shareholders	$	109.7		$	116.3		$	24		$	(140.3	)	$	109.7
	Comprehensive income attributable to Rock-Tenn Company shareholders	$	103		$	110.3		$	15.2		$	(125.5	)	$	103
	CONDENSED CONSOLIDATING BALANCE SHEETS
		31-Dec-14
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	20.6		$	1.5		$	10.7		$	—		$	32.8
	Restricted cash	8.8			—			—			—			8.8
	Accounts receivable, net	—			104.5			945.3			(33.0		)	1,016.80
	Inventories	—			859.4			172.5			—			1,031.90
	Other current assets	12.6			191.8			36.2			(8.6		)	232
	Intercompany receivables	100.3			18.9			15.8			(135.0		)	—
	Total current assets	142.3			1,176.10			1,180.50			(176.6		)	2,322.30
Net property, plant and equipment	—			5,435.80			384.8			—			5,820.60
Goodwill	—			1,819.50			103			—			1,922.50
Intangibles, net	—			633.3			34.8			—			668.1
Intercompany notes receivable	265.8			681.9			—			(947.7		)	—
Investments in consolidated subsidiaries	6,791.80			400.1			—			(7,191.9		)	—
Other assets	27.8			121.5			20.6			(5.6		)	164.3
	$	7,227.70		$	10,268.20		$	1,723.70		$	(8,321.8	)	$	10,897.80
LIABILITIES AND EQUITY
Current liabilities:
Current portion of debt	$	122.3		$	3.6		$	2.3		$	—		$	128.2
Accounts payable	—			691.8			98			(33.0		)	756.8
Accrued compensation and benefits	—			147			24.9			—			171.9
Other current liabilities	29.9			179.3			20.8			(8.6		)	221.4
Intercompany payables	—			108.9			26.1			(135.0		)	—
Total current liabilities	152.2			1,130.60			172.1			(176.6		)	1,278.30
Long-term debt due after one year	2,308.90			0.2			370.4			—			2,679.50
Intercompany notes payable	374.9			236			336.8			(947.7		)	—
Pension liabilities, net of current portion	—			936.5			160.5			—			1,097.00
Postretirement benefit liabilities, net of current portion	—			57.6			42.4			—			100
Deferred income taxes	—			1,172.50			14.1			(5.6		)	1,181.00
Other long-term liabilities	4.1			153.3			3.6			—			161
Redeemable noncontrolling interests	—			6.7			6.2			—			12.9
Total Rock-Tenn Company shareholders’ equity	4,387.60			6,574.30			617.6			(7,191.9		)	4,387.60
Noncontrolling interests	—			0.5			—			—			0.5
Total equity	4,387.60			6,574.80			617.6			(7,191.9		)	4,388.10
	$	7,227.70		$	10,268.20		$	1,723.70		$	(8,321.8	)	$	10,897.80
CONDENSED CONSOLIDATING BALANCE SHEETS
	30-Sep-14
							Non-
				Guarantor			Guarantor						Consolidated
	Parent			Subsidiaries			Subsidiaries			Eliminations			Total
	(In millions)
ASSETS
Current assets:
Cash and cash equivalents	$	14.5		$	1.7		$	16.4		$	—		$	32.6
Restricted cash	8.8			—			—			—			8.8
Accounts receivable, net	—			93.5			1,048.10			(22.9		)	1,118.70
Inventories	—			852			177.2			—			1,029.20
Other current assets	34.6			205.9			35.4			(32.7		)	243.2
Intercompany receivables	87.2			6.3			13.5			(107.0		)	—
Total current assets	145.1			1,159.40			1,290.60			(162.6		)	2,432.50
Net property, plant and equipment	—			5,432.30			400.3			—			5,832.60
Goodwill	—			1,820.10			106.3			—			1,926.40
Intangibles, net	—			655.9			35.2			—			691.1
Intercompany notes receivable	266.5			607.6			—			(874.1		)	—
Investments in consolidated subsidiaries	6,680.30			390.6			—			(7,070.9		)	—
Other assets	30.8			110.7			21.7			(6.1		)	157.1
	$	7,122.70		$	10,176.60		$	1,854.10		$	(8,113.7	)	$	11,039.70
LIABILITIES AND EQUITY
Current liabilities:
Current portion of debt	$	91.7		$	3.9		$	37		$	—		$	132.6
Accounts payable	—			736.1			99.6			(22.9		)	812.8
Accrued compensation and benefits	—			196.1			28.3			—			224.4
Other current liabilities	14.2			178.6			30.6			(32.7		)	190.7
Intercompany payables	—			82.6			24.4			(107.0		)	—
Total current liabilities	105.9			1,197.30			219.9			(162.6		)	1,360.50
Long-term debt due after one year	2,330.90			0.2			521			—			2,852.10
Intercompany notes payable	374.9			236			263.2			(874.1		)	—
Pension liabilities, net of current portion	—			916.8			174.1			—			1,090.90
Postretirement benefit liabilities, net of current portion	—			57.6			44.1			—			101.7
Deferred income taxes	—			1,126.80			12.1			(6.1		)	1,132.80
Other long-term liabilities	4.2			173.6			2.8			—			180.6
Redeemable noncontrolling interests	—			7.7			6			—			13.7
Total Rock-Tenn Company shareholders’ equity	4,306.80			6,460.00			610.9			(7,070.9		)	4,306.80
Noncontrolling interests	—			0.6			—			—			0.6
Total equity	4,306.80			6,460.60			610.9			(7,070.9		)	4,307.40
	$	7,122.70		$	10,176.60		$	1,854.10		$	(8,113.7	)	$	11,039.70
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
	Three Months Ended December 31, 2014
							Non-
				Guarantor			Guarantor						Consolidated
	Parent			Subsidiaries			Subsidiaries			Eliminations			Total
	(In millions)
Operating activities:
Net cash provided by operating activities	$	42.4		$	47.2		$	249.7		$	(6.9	)	$	332.4
Investing activities:
Capital expenditures	—			(119.1		)	(7.8		)	—			(126.9		)
Return of capital from unconsolidated entities	—			0.2			—			—			0.2
Proceeds from sale of property, plant and equipment	—			3.3			0.2			—			3.5
Intercompany notes issued	—			(83.4		)	—			83.4			—
Intercompany notes proceeds	—			137.7			—			(137.7		)	—
Intercompany return of capital	1.5			—			—			(1.5		)	—
Net cash provided by (used for) investing activities	1.5			(61.3		)	(7.6		)	(55.8		)	(123.2		)
Financing activities:
Additions to revolving credit facilities	39.4			—			—			—			39.4
Repayments of revolving credit facilities	(30.9		)	—			(27.8		)	—			(58.7		)
Additions to debt	—			—			10.9			—			10.9
Repayments of debt	—			—			(165.6		)	—			(165.6		)
Commercial card program	—			(0.4		)	—			—			(0.4		)
Debt issuance costs	(0.1		)	—			—			—			(0.1		)
Issuances of common stock, net of related minimum tax withholdings	1.8			—			—			—			1.8
Purchases of common stock	(8.7		)	—			—			—			(8.7		)
(Repayments to) advances from consolidated entities	(13.0		)	13.8			(0.8		)	—			—
Advances from unconsolidated entity	—			0.5			—			—			0.5
Cash dividends paid to shareholders	(26.3		)	—			—			—			(26.3		)
Cash distributions paid to noncontrolling interests	—			—			(1.2		)	—			(1.2		)
Intercompany notes borrowing	—			—			83.4			(83.4		)	—
Intercompany notes payments	—			—			(137.7		)	137.7			—
Intercompany capital distribution	—			—			(1.5		)	1.5			—
Intercompany dividends	—			—			(6.9		)	6.9			—
Net cash (used for) provided by financing activities	(37.8		)	13.9			(247.2		)	62.7			(208.4		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(0.6		)	—			(0.6		)
Increase (decrease) in cash and cash equivalents	6.1			(0.2		)	(5.7		)	—			0.2
Cash and cash equivalents at beginning of period	14.5			1.7			16.4			—			32.6
Cash and cash equivalents at end of period	$	20.6		$	1.5		$	10.7		$	—		$	32.8
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
	Three Months Ended December 31, 2013
							Non-
				Guarantor			Guarantor						Consolidated
	Parent			Subsidiaries			Subsidiaries			Eliminations			Total
	(In millions)
Operating activities:
Net cash provided by operating activities	$	42.7		$	100		$	168.3		$	(6.5	)	$	304.5
Investing activities:
Capital expenditures	—			(95.0		)	(5.6		)	—			(100.6		)
Cash paid for purchase of business, net of cash acquired	(60.0		)	—			—			—			(60.0		)
Return of capital from unconsolidated entities	—			0.2			—			—			0.2
Proceeds from sale of property, plant and equipment	—			3.1			0.2			—			3.3
Proceeds from property, plant and equipment insurance settlement	—			2.7			—			—			2.7
Intercompany notes issued	—			(13.4		)	—			13.4			—
Intercompany notes proceeds	3.1			88			—			(91.1		)	—
Net cash used for investing activities	(56.9		)	(14.4		)	(5.4		)	(77.7		)	(154.4		)
Financing activities:
Additions to revolving credit facilities	16.7			—			3.3			—			20
Repayments of revolving credit facilities	(0.4		)	—			(21.5		)	—			(21.9		)
Additions to debt	—			—			46.6			—			46.6
Repayments of debt	—			—			(131.6		)	—			(131.6		)
Issuances of common stock, net of related minimum tax withholdings	(5.9		)	—			—			—			(5.9		)
Purchases of common stock	(53.0		)	—			—			—			(53.0		)
Excess tax benefits from share-based compensation	—			10.2			—			—			10.2
Advances from (repayments to) consolidated entities	73.7			(90.7		)	17			—			—
Repayments to unconsolidated entity	—			(0.2		)	—			—			(0.2		)
Cash dividends paid to shareholders	(25.8		)	—			—			—			(25.8		)
Cash distributions paid to noncontrolling interests	—			—			(0.1		)	—			(0.1		)
Intercompany notes borrowing	—			—			13.4			(13.4		)	—
Intercompany notes payments	—			—			(91.1		)	91.1			—
Intercompany dividends	—			—			(6.5		)	6.5			—
Net cash provided by (used for) financing activities	5.3			(80.7		)	(170.5		)	84.2			(161.7		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(0.2		)	—			(0.2		)
(Decrease) increase in cash and cash equivalents	(8.9		)	4.9			(7.8		)	—			(11.8		)
Cash and cash equivalents at beginning of period	14.8			1.2			20.4			—			36.4
Cash and cash equivalents at end of period	$	5.9		$	6.1		$	12.6		$	—		$	24.6
Supplemental schedule of non-cash investing and financing activities:
The Condensed Consolidating Statements of Cash Flows for the three months ended December 31, 2013 do not include a $23.6 million non-cash transaction between a Guarantor Subsidiary and a Non-Guarantor Subsidiary to increase an intercompany capital investment in the Non-Guarantor Subsidiary nor to reflect the corresponding decrease in intercompany notes receivable. The additional investment into a Non-Guarantor Subsidiary was made through a non-cash conversion of an intercompany note receivable in the first quarter of fiscal 2014.
	Three Months Ended December 31, 2013
							Non-
				Guarantor			Guarantor						Consolidated
	Parent			Subsidiaries			Subsidiaries			Eliminations			Total
	(In millions)
Investing activities:
Intercompany capital investment	$	—		$	(23.6	)	$	—		$	23.6		$	—
Intercompany notes receivable	—			23.6			—			(23.6		)	—
Financing activities:
Intercompany capital contributed	$	—		$	—		$	23.6		$	(23.6	)	$	—
Intercompany note payable	—			—			(23.6		)	23.6			—

Subsequent_Events

Subsequent Events	3 Months Ended
	Dec. 31, 2014
Subsequent Event [Line Items]
Subsequent Events [Text Block]	Subsequent Events
	On January 25, 2015, RockTenn and MeadWestvaco, entered into a Business Combination Agreement (the “Agreement”), pursuant to which RockTenn and MeadWestvaco have agreed, subject to the terms and conditions of the Agreement, to effect a strategic combination of their respective businesses by: (i) RockTenn forming a new holding company organized under the laws of Delaware, the name of which shall be mutually agreed upon by RockTenn and MeadWestvaco (“TopCo”), (ii) RockTenn merging with a newly formed wholly owned direct subsidiary of TopCo, with RockTenn surviving such merger as a direct wholly owned subsidiary of TopCo (the “RockTenn Merger”), and (iii) MeadWestvaco merging with and into a newly formed wholly owned direct subsidiary of TopCo, with such subsidiary surviving such merger as a direct wholly owned subsidiary of TopCo (the “MeadWestvaco Merger” and, together with the RockTenn Merger, the “Mergers”). The boards of directors of each of RockTenn and MeadWestvaco have unanimously approved the Agreement and the transactions contemplated thereby. The transaction, which is expected to close in the second calendar quarter of 2015, requires the approval of shareholders of both the Company and MeadWestvaco and is subject to the receipt of certain regulatory approvals and other customary closing conditions. For additional information regarding the transaction see RockTenn’s Current Report on Form 8-K filed on January 26, 2015 with respect to the press release announcing the merger and RockTenn’s Current Report on Form 8-K filed on January 27, 2015 with respect to entering into the Agreement.

Equity_and_Other_Comprehensive1

Equity and Other Comprehensive Income (Tables)	3 Months Ended
	Dec. 31, 2014
Comprehensive Income and Equity [Abstract]
Schedule of Stockholders Equity	The following is a summary of the changes in total equity for the three months ended December 31, 2014 (in millions):
		Rock-Tenn			Noncontrolling (1)			Total
		Company			Interests			Equity
		Shareholders’
		Equity
	Balance at September 30, 2014	$	4,306.80		$	0.6		$	4,307.40
	Net income	125.1			0.1			125.2
	Other comprehensive loss, net of tax	(21.8		)	—			(21.8		)
	Compensation expense under share-based plans	10.7			—			10.7
	Cash dividends declared (per share - $0.1875)(2)	(26.3		)	—			(26.3		)
	Cash distributions to noncontrolling interests	—			(0.2		)	(0.2		)
	Issuance of Class A common stock, net of stock received for minimum tax withholdings	1.8			—			1.8
	Purchases of Class A common stock	(8.7		)	—			(8.7		)
	Balance at December 31, 2014	$	4,387.60		$	0.5		$	4,388.10
	(1)	Excludes amounts related to contingently redeemable noncontrolling interests which are separately classified outside of permanent equity in the mezzanine section of the Condensed Consolidated Balance Sheets.
	(2)	Includes cash dividends paid, and dividends declared but unpaid, related to the shares reserved but unissued to satisfy Smurfit-Stone bankruptcy claims.
Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The tables below summarize the changes in accumulated other comprehensive (loss) income, net of tax, by component for the three months ended December 31, 2014 and December 31, 2013 (in millions):
		Deferred Loss on Cash Flow Hedges			Defined Benefit Pension and Postretirement Plans			Foreign Currency Items			Total (1)
	Balance at September 30, 2014	$	(0.2	)	$	(498.2	)	$	3.1		$	(495.3	)
	Other comprehensive loss before reclassifications	—			(16.7		)	(17.5		)	(34.2		)
	Amounts reclassified from accumulated other comprehensive loss	—			12.4			—			12.4
	Net current period other comprehensive loss	—			(4.3		)	(17.5		)	(21.8		)
	Balance at December 31, 2014	$	(0.2	)	$	(502.5	)	$	(14.4	)	$	(517.1	)
	(1)     All amounts are net of tax and noncontrolling interest.
		Deferred Loss on Cash Flow Hedges			Defined Benefit Pension and Postretirement Plans			Foreign Currency Items			Total (1)
	Balance at September 30, 2013	$	(0.2	)	$	(332.9	)	$	32.5		$	(300.6	)
	Other comprehensive income (loss) before reclassifications	—			—			(9.2		)	(9.2		)
	Amounts reclassified from accumulated other comprehensive loss	—			2.5			—			2.5
	Net current period other comprehensive income (loss)	—			2.5			(9.2		)	(6.7		)
	Balance at December 31, 2013	$	(0.2	)	$	(330.4	)	$	23.3		$	(307.3	)
	(1)     All amounts are net of tax and noncontrolling interest.
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	The following tables summarize the reclassifications out of accumulated other comprehensive loss by component (in millions):
		Three Months Ended									Three Months Ended
		31-Dec-14									December 31, 2013
		Pretax			Tax			Net of Tax			Pretax			Tax		Net of Tax
	Amortization of defined benefit pension and postretirement items (1)
	Actuarial losses (2)	$	(28.3	)	$	10.7		$	(17.6	)	$	(4.0	)	$	1.5	$	(2.5	)
	Prior service costs (2)	8.4			(3.2		)	5.2			—			—		—
	Total reclassifications for the period	$	(19.9	)	$	7.5		$	(12.4	)	$	(4.0	)	$	1.5	$	(2.5	)
	(1)	Amounts in parentheses indicate charges to earnings. Amounts pertaining to noncontrolling interests are excluded.
	(2)	These accumulated other comprehensive income components are included in the computation of net periodic pension cost (See “Note 11. Retirement Plans” for additional details).

Earnings_per_Share_Tables

Earnings per Share (Tables)	3 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of earnings per share, basic and diluted	The following table sets forth the computation of basic and diluted earnings per share under the two-class method and has been retroactively adjusted to reflect the Stock Split (in millions, except per share data):
		Three Months Ended
		December 31,
		2014			2013
	Basic earnings per share:
	Numerator:
	Net income attributable to Rock-Tenn Company shareholders	$	125.1		$	109.7
	Less: Distributed and undistributed income available to participating securities	(0.1		)	(0.1		)
	Distributed and undistributed income attributable to Rock-Tenn Company shareholders	$	125		$	109.6
	Denominator:
	Basic weighted average shares outstanding	140.3			144
	Basic earnings per share attributable to Rock-Tenn Company shareholders	$	0.89		$	0.76
	Diluted earnings per share:
	Numerator:
	Net income attributable to Rock-Tenn Company shareholders	$	125.1		$	109.7
	Less: Distributed and undistributed income available to participating securities	(0.1		)	(0.1		)
	Distributed and undistributed income attributable to Rock-Tenn Company shareholders	$	125		$	109.6
	Denominator:
	Basic weighted average shares outstanding	140.3			144
	Effect of dilutive stock options and non-participating securities	2.5			2.6
	Diluted weighted average shares outstanding	142.8			146.6
	Diluted earnings per share attributable to Rock-Tenn Company shareholders	$	0.88		$	0.75

Restructuring_and_Other_Costs_1

Restructuring and Other Costs, Net (Tables)	3 Months Ended
	Dec. 31, 2014
Restructuring and Other Costs, Net [Abstract]
Schedule of restructuring and other costs, net	The following table presents a summary of restructuring and other charges, net, related to active restructuring and other initiatives that we incurred during the three months ended December 31, 2014 and December 31, 2013, the cumulative recorded amount since we started the initiatives, and the total we expect to incur (in millions):
	Summary of Restructuring and Other Costs, Net
	Segment		Period		Net Property,				Severance			Equipment		Facility		Other		Total
					Plant and				and Other			and Inventory		Carrying		Costs
					Equipment (a)				Employee			Relocation		Costs
									Related			Costs
									Costs
	Corrugated		Current Qtr.		$	0.2			$	—		$	0.1	$	0.6	$	0.1	$	1
	Packaging(b)
			Prior Year Qtr.		1.5				—			1.3		1.1		0.1		4
			Cumulative		29.3				29.2			7.2		11.8		5.5		83
			Expected Total		29.3				29.2			7.3		13.8		5.5		85.1
	Consumer Packaging(c)		Current Qtr.		0.1				0.4			—		—		—		0.5
			Prior Year Qtr.		—				(0.1		)	—		—		—		(0.1		)
			Cumulative		4.5				2			0.5		0.4		0.2		7.6
			Expected Total		4.5				2			0.5		0.5		0.2		7.7
	Recycling(d)		Current Qtr.		0.1				—			—		0.3		0.8		1.2
			Prior Year Qtr.		3.4				(0.1		)	0.4		0.4		2.1		6.2
			Cumulative		12.1				1.3			0.8		2.8		7.4		24.4
			Expected Total		12.1				1.3			1.3		3.2		7.5		25.4
	Other(e)		Current Qtr.		—				—			—		—		2.7		2.7
			Prior Year Qtr.		—				—			—		—		7.5		7.5
			Cumulative		0.1				0.2			0.1		—		148.5		148.9
			Expected Total		0.1				0.2			0.1		—		148.5		148.9
	Total		Current Qtr.		$	0.4			$	0.4		$	0.1	$	0.9	$	3.6	$	5.4
			Prior Year Qtr.		$	4.9			$	(0.2	)	$	1.7	$	1.5	$	9.7	$	17.6
			Cumulative		$	46			$	32.7		$	8.6	$	15	$	161.6	$	263.9
			Expected Total		$	46			$	32.7		$	9.2	$	17.5	$	161.7	$	267.1
	(a)	We have defined “Net Property, Plant and Equipment” as used in this Note 6 to represent property, plant and equipment impairment losses, subsequent adjustments to fair value for assets classified as held for sale, subsequent (gains) or losses on sales of property, plant and equipment and related parts and supplies, and accelerated depreciation on such assets, if any.
	(b)	The Corrugated Packaging segment current quarter and prior year quarter charges primarily reflect on-going closure costs at previously closed facilities net of asset sales. The cumulative charges primarily reflect charges associated with the closure of corrugated container plants and the closure of the Matane, Quebec containerboard mill, including gains and losses associated with the sale of assets associated with the closures. We have transferred a substantial portion of each closed facility's production to our other facilities.
	(c)	The Consumer Packaging segment current quarter charges are primarily associated with the closure of a small converting facility and on-going closure activity at previously closed facilities including the Cincinnati, OH specialty recycled paperboard mill. The prior year quarter charges also primarily reflect on-going closure costs associated with previously closed facilities. The cumulative charges primarily reflect charges associated with the closure of converting facilities and a specialty recycled paperboard mill. We have transferred a substantial portion of each closed facility’s production to our other facilities.
	(d)	The Recycling segment current quarter charges are primarily associated with the on-going closure costs at previously closed facilities. The prior year quarter charges primarily reflect charges associated with a collection facility and on-going closure costs associated with previously closed facilities. The cumulative charges primarily reflect the charges associated with the closure of collection facilities including gains and losses associated with the sale of assets associated with the closures.
	(e)	The expenses in the “Other” segment primarily reflect costs that we consider as Corporate, including the “Other Costs” column that primarily reflects costs incurred as a result of the Smurfit-Stone Acquisition, such as merger integration expenses. Also included in the “Other” segment are insignificant costs related to our Merchandising Displays segment. The pre-tax charges in the “Other Costs” column are summarized below (in millions):
		Acquisition				Integration				Total
		Expenses				Expenses
	Current Qtr.	$	0.5			$	2.2			$	2.7
	Prior Year Qtr.	$	1.4			$	6.1			$	7.5
	Acquisition expenses include expenses associated with acquisitions, whether consummated or not, as well as litigation expenses associated with the Smurfit-Stone Acquisition, net of recoveries. Acquisition expenses primarily consist of advisory, legal, accounting, valuation and other professional or consulting fees. Integration expenses primarily reflect severance and other employee costs, professional services including work being performed to facilitate the Smurfit-Stone integration including information systems integration costs, lease expense and other costs. Due to the complexity and duration of the integration activities, the precise amount expected to be incurred has not been quantified above. We expect integration activities related to the Smurfit-Stone Acquisition to continue during fiscal 2015.
Schedule of Restructuring and Other Costs Reserve By Type of Cost	The following table represents a summary of and the changes in the restructuring accrual, which is primarily composed of lease commitments, accrued severance and other employee costs, and a reconciliation of the restructuring accrual charges to the line item “Restructuring and other costs, net” on our Condensed Consolidated Statements of Income (in millions):
		Three Months Ended
		December 31,
		2014				2013
	Accrual at beginning of fiscal year	$	10.9			$	21.8
	Additional accruals	0.2				1.1
	Payments	(2.7		)		(6.7		)
	Adjustment to accruals	0.9				(0.5		)
	Accrual at December 31	$	9.3			$	15.7
	Reconciliation of accruals and charges to restructuring and other costs, net:
		Three Months Ended
		December 31,
		2014				2013
	Additional accruals and adjustments to accruals (see table above)	$	1.1			$	0.6
	Acquisition expenses	0.5				1.4
	Integration expenses	2.1				5.8
	Net property, plant and equipment	0.4				4.9
	Severance and other employee expense	0.4				0.6
	Equipment and inventory relocation costs	0.1				1.7
	Facility carrying costs	0.9				1.5
	Other (income) expense	(0.1		)		1.1
	Total restructuring and other costs, net	$	5.4			$	17.6
Schedule of Restructuring Costs Included in Other Expenses
		The expenses in the “Other” segment primarily reflect costs that we consider as Corporate, including the “Other Costs” column that primarily reflects costs incurred as a result of the Smurfit-Stone Acquisition, such as merger integration expenses. Also included in the “Other” segment are insignificant costs related to our Merchandising Displays segment. The pre-tax charges in the “Other Costs” column are summarized below (in millions):
		Acquisition				Integration				Total
		Expenses				Expenses
	Current Qtr.	$	0.5			$	2.2			$	2.7
	Prior Year Qtr.	$	1.4			$	6.1			$	7.5
	Acquisition expenses include expenses associated with acquisitions, whether consummated or not, as well as litigation expenses associated with the Smurfit-Stone Acquisition, net of recoveries. Acquisition expenses primarily consist of advisory, legal, accounting, valuation and other professional or consulting fees. Integration expenses primarily reflect severance and other employee costs, professional services including work being performed to facilitate the Smurfit-Stone integration including information systems integration costs, lease expense and other costs. Due to the complexity and duration of the integration activities, the precise amount expected to be incurred has not been quantified above. We expect integration activities related to the Smurfit-Stone Acquisition to continue during fiscal 2015.

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Dec. 31, 2014
Inventories [Abstract]
Schedule of inventories	Inventories were as follows (in millions):
		December 31,			September 30,
		2014			2014
	Finished goods and work in process	$	422.9		$	421.8
	Raw materials	473.6			465.7
	Spare parts and supplies	223.7			225.3
	Inventories at FIFO cost	1,120.20			1,112.80
	LIFO reserve	(88.3		)	(83.6		)
	Net inventories	$	1,031.90		$	1,029.20

Debt_Tables

Debt (Tables)	3 Months Ended
	Dec. 31, 2014
Debt [Abstract]
Components of debt	The following were individual components of debt (in millions):
		December 31,		September 30,
		2014		2014
	4.45% notes due March 2019	$	349.8	$	349.8
	3.50% notes due March 2020	348		347.9
	4.90% notes due March 2022	399.4		399.4
	4.00% notes due March 2023	347.1		347
	Term loan facility	947.5		947.5
	Revolving credit and swing facilities	98.2		120.3
	Receivables-backed financing facility	305		460
	Other debt	12.7		12.8
	Total debt	2,807.70		2,984.70
	Less current portion of debt	128.2		132.6
	Long-term debt due after one year	$	2,679.50	$	2,852.10

Fair_Value_Tables

Fair Value (Tables)	3 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value of Debt	The following table summarizes the carrying amount and estimated fair value of our long-term debt (in millions):
		December 31, 2014				September 30, 2014
		Carrying		Fair		Carrying		Fair
		Amount		Value		Amount		Value
	March 2019 Notes(1)	$	349.8	$	371.8	$	349.8	$	376.1
	March 2020 Notes(1)	348		354.4		347.9		357.5
	March 2022 Notes(1)	399.4		430.3		399.4		430
	March 2023 Notes(1)	347.1		355.4		347		357.9
	Term loan facilities(2)	947.5		947.5		947.5		947.5
	Revolving credit and swing facilities(2)	98.2		98.2		120.3		120.3
	Receivables-backed financing facility(2)	305		305		460		460
	Other debt(2)(3)	12.7		12.9		12.8		13
	Total debt	$	2,807.70	$	2,875.50	$	2,984.70	$	3,062.30
	-1	Fair value is categorized as level 2 within the fair value hierarchy since the notes trade infrequently. Fair value is based on quoted market prices.
	-2	Fair value approximates the carrying amount as the variable interest rates reprice frequently at observable current market rates. As such, fair value is categorized as level 2 within the fair value hierarchy.
	-3	Fair value for certain debt is estimated based on the discounted value of future cash flows using observable current market interest rates offered for debt of similar credit risk and maturity. As such, fair value is categorized as level 2 within the fair value hierarchy.

Retirement_Plans_Tables

Retirement Plans (Tables)	3 Months Ended
	Dec. 31, 2014
Retirement Plans [Abstract]
Summary of components of net pension cost and summary of components of postretirement benefit costs	The following table represents a summary of the components of the postretirement benefits costs (in millions):
		Three Months Ended
		December 31,
		2014			2013
	Service cost	$	0.1		$	0.3
	Interest cost	1.2			1.5
	Amortization of net actuarial gain	(0.3		)	(0.2		)
	Amortization of prior service credit	(0.5		)	(0.3		)
	Curtailment gain recognized	(8.1		)	—
	Postretirement plan (income) expense	$	(7.6	)	$	1.3
	The following table represents a summary of the components of net pension cost (in millions):
		Three Months Ended
		December 31,
		2014			2013
	Service cost	$	7.7		$	7.9
	Interest cost	49.6			55
	Expected return on plan assets	(65.0		)	(63.9		)
	Amortization of net actuarial loss	8.7			4.3
	Amortization of prior service cost	0.3			0.3
	Settlement loss recognized	20			—
	Company defined benefit plan expense	21.3			3.6
	Multiemployer and other plans	1.3			1.5
	Net pension cost	$	22.6		$	5.1

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Dec. 31, 2014
Segment Information [Abstract]
Certain operating data for segments	The following table shows selected operating data for our segments (in millions):
		Three Months Ended
		December 31,
		2014			2013
	Net sales (aggregate):
	Corrugated Packaging	$	1,768.20		$	1,651.90
	Consumer Packaging	478.8			472.1
	Merchandising Displays	238.2			184.6
	Recycling	80.3			99.6
	Total	$	2,565.50		$	2,408.20
	Less net sales (intersegment):
	Corrugated Packaging	$	32.5		$	29.7
	Consumer Packaging	7.5			5.7
	Merchandising Displays	5.9			4.4
	Recycling	5.4			5.8
	Total	$	51.3		$	45.6
	Net sales (unaffiliated customers):
	Corrugated Packaging	$	1,735.70		$	1,622.20
	Consumer Packaging	471.3			466.4
	Merchandising Displays	232.3			180.2
	Recycling	74.9			93.8
	Total	$	2,514.20		$	2,362.60
	Segment income:
	Corrugated Packaging	$	183.1		$	157.7
	Consumer Packaging	52.6			57.6
	Merchandising Displays	6.4			19.3
	Recycling	1.8			0.1
	Segment income	243.9			234.7
	Pension lump sum settlement and retiree medical curtailment, net	(11.9		)	—
	Restructuring and other costs, net	(5.4		)	(17.6		)
	Non-allocated expenses	(15.9		)	(20.0		)
	Interest expense	(23.3		)	(24.0		)
	Interest income and other income (expense), net	0.2			(0.8		)
	Income before income taxes	187.6			172.3
	Income tax expense	(62.0		)	(61.7		)
	Consolidated net income	125.6			110.6
	Less: Net income attributable to noncontrolling interests	(0.5		)	(0.9		)
	Net income attributable to Rock-Tenn Company shareholders	$	125.1		$	109.7

Selected_Consolidating_Financi1

Selected Consolidating Financial Statements of Parent, Guarantors and Non-Guarantors (Tables)	3 Months Ended
	Dec. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Statements of Income [Table Text Block]	CONDENSED CONSOLIDATING STATEMENTS OF INCOME
		Three Months Ended December 31, 2014
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	Net sales	$	—		$	2,290.40		$	410.1		$	(186.3	)	$	2,514.20
	Cost of goods sold	—			1,870.00			327.9			(153.2		)	2,044.70
	Gross profit	—			420.4			82.2			(33.1		)	469.5
	Selling, general and administrative expenses	—			211.8			31.9			—			243.7
	Pension lump sum settlement and retiree medical curtailment, net	—			11.9			—			—			11.9
	Restructuring and other costs, net	—			5.1			0.3			—			5.4
	Operating profit	—			191.6			50			(33.1		)	208.5
	Interest expense	(23.2		)	(0.4		)	(4.5		)	4.8			(23.3		)
	Interest income and other income (expense), net	1.2			(29.5		)	0.2			28.3			0.2
	Equity in income of unconsolidated entities	—			2.2			—			—			2.2
	Equity in income of consolidated entities	138.5			27.8			—			(166.3		)	—
	Income before income taxes	116.5			191.7			45.7			(166.3		)	187.6
	Income tax benefit (expense)	8.6			(56.6		)	(14.0		)	—			(62.0		)
	Consolidated net income	125.1			135.1			31.7			(166.3		)	125.6
	Less: Net income attributable to noncontrolling interests	—			(0.3		)	(0.2		)	—			(0.5		)
	Net income attributable to Rock-Tenn Company shareholders	$	125.1		$	134.8		$	31.5		$	(166.3	)	$	125.1
	Comprehensive income attributable to Rock-Tenn Company shareholders	$	103.3		$	113.7		$	15.7		$	(129.4	)	$	103.3
	CONDENSED CONSOLIDATING STATEMENTS OF INCOME
		Three Months Ended December 31, 2013
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	Net sales	$	—		$	2,141.80		$	383.7		$	(162.9	)	$	2,362.60
	Cost of goods sold	—			1,731.90			313.9			(131.0		)	1,914.80
	Gross profit	—			409.9			69.8			(31.9		)	447.8
	Selling, general and administrative expenses	0.5			207.3			27			—			234.8
	Restructuring and other costs, net	0.2			16.4			1			—			17.6
	Operating profit	(0.7		)	186.2			41.8			(31.9		)	195.4
	Interest expense	(22.5		)	(1.4		)	(7.2		)	7.1			(24.0		)
	Interest income and other income (expense), net	2.2			(27.5		)	(0.3		)	24.8			(0.8		)
	Equity in income of unconsolidated entities	—			1.7			—			—			1.7
	Equity in income of consolidated entities	122.5			17.8			—			(140.3		)	—
	Income before income taxes	101.5			176.8			34.3			(140.3		)	172.3
	Income tax benefit (expense)	8.2			(59.8		)	(10.1		)	—			(61.7		)
	Consolidated net income	109.7			117			24.2			(140.3		)	110.6
	Less: Net income attributable to noncontrolling interests	—			(0.7		)	(0.2		)	—			(0.9		)
	Net income attributable to Rock-Tenn Company shareholders	$	109.7		$	116.3		$	24		$	(140.3	)	$	109.7
	Comprehensive income attributable to Rock-Tenn Company shareholders	$	103		$	110.3		$	15.2		$	(125.5	)	$	103
Condensed Consolidating Balance Sheets [Table Text Block]	CONDENSED CONSOLIDATING BALANCE SHEETS
		31-Dec-14
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	20.6		$	1.5		$	10.7		$	—		$	32.8
	Restricted cash	8.8			—			—			—			8.8
	Accounts receivable, net	—			104.5			945.3			(33.0		)	1,016.80
	Inventories	—			859.4			172.5			—			1,031.90
	Other current assets	12.6			191.8			36.2			(8.6		)	232
	Intercompany receivables	100.3			18.9			15.8			(135.0		)	—
	Total current assets	142.3			1,176.10			1,180.50			(176.6		)	2,322.30
	Net property, plant and equipment	—			5,435.80			384.8			—			5,820.60
	Goodwill	—			1,819.50			103			—			1,922.50
	Intangibles, net	—			633.3			34.8			—			668.1
	Intercompany notes receivable	265.8			681.9			—			(947.7		)	—
	Investments in consolidated subsidiaries	6,791.80			400.1			—			(7,191.9		)	—
	Other assets	27.8			121.5			20.6			(5.6		)	164.3
		$	7,227.70		$	10,268.20		$	1,723.70		$	(8,321.8	)	$	10,897.80
	LIABILITIES AND EQUITY
	Current liabilities:
	Current portion of debt	$	122.3		$	3.6		$	2.3		$	—		$	128.2
	Accounts payable	—			691.8			98			(33.0		)	756.8
	Accrued compensation and benefits	—			147			24.9			—			171.9
	Other current liabilities	29.9			179.3			20.8			(8.6		)	221.4
	Intercompany payables	—			108.9			26.1			(135.0		)	—
	Total current liabilities	152.2			1,130.60			172.1			(176.6		)	1,278.30
	Long-term debt due after one year	2,308.90			0.2			370.4			—			2,679.50
	Intercompany notes payable	374.9			236			336.8			(947.7		)	—
	Pension liabilities, net of current portion	—			936.5			160.5			—			1,097.00
	Postretirement benefit liabilities, net of current portion	—			57.6			42.4			—			100
	Deferred income taxes	—			1,172.50			14.1			(5.6		)	1,181.00
	Other long-term liabilities	4.1			153.3			3.6			—			161
	Redeemable noncontrolling interests	—			6.7			6.2			—			12.9
	Total Rock-Tenn Company shareholders’ equity	4,387.60			6,574.30			617.6			(7,191.9		)	4,387.60
	Noncontrolling interests	—			0.5			—			—			0.5
	Total equity	4,387.60			6,574.80			617.6			(7,191.9		)	4,388.10
		$	7,227.70		$	10,268.20		$	1,723.70		$	(8,321.8	)	$	10,897.80
	CONDENSED CONSOLIDATING BALANCE SHEETS
		30-Sep-14
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	ASSETS
	Current assets:
	Cash and cash equivalents	$	14.5		$	1.7		$	16.4		$	—		$	32.6
	Restricted cash	8.8			—			—			—			8.8
	Accounts receivable, net	—			93.5			1,048.10			(22.9		)	1,118.70
	Inventories	—			852			177.2			—			1,029.20
	Other current assets	34.6			205.9			35.4			(32.7		)	243.2
	Intercompany receivables	87.2			6.3			13.5			(107.0		)	—
	Total current assets	145.1			1,159.40			1,290.60			(162.6		)	2,432.50
	Net property, plant and equipment	—			5,432.30			400.3			—			5,832.60
	Goodwill	—			1,820.10			106.3			—			1,926.40
	Intangibles, net	—			655.9			35.2			—			691.1
	Intercompany notes receivable	266.5			607.6			—			(874.1		)	—
	Investments in consolidated subsidiaries	6,680.30			390.6			—			(7,070.9		)	—
	Other assets	30.8			110.7			21.7			(6.1		)	157.1
		$	7,122.70		$	10,176.60		$	1,854.10		$	(8,113.7	)	$	11,039.70
	LIABILITIES AND EQUITY
Current liabilities:
Current portion of debt	$	91.7		$	3.9		$	37		$	—		$	132.6
Accounts payable	—			736.1			99.6			(22.9		)	812.8
Accrued compensation and benefits	—			196.1			28.3			—			224.4
Other current liabilities	14.2			178.6			30.6			(32.7		)	190.7
Intercompany payables	—			82.6			24.4			(107.0		)	—
Total current liabilities	105.9			1,197.30			219.9			(162.6		)	1,360.50
Long-term debt due after one year	2,330.90			0.2			521			—			2,852.10
Intercompany notes payable	374.9			236			263.2			(874.1		)	—
Pension liabilities, net of current portion	—			916.8			174.1			—			1,090.90
Postretirement benefit liabilities, net of current portion	—			57.6			44.1			—			101.7
Deferred income taxes	—			1,126.80			12.1			(6.1		)	1,132.80
Other long-term liabilities	4.2			173.6			2.8			—			180.6
Redeemable noncontrolling interests	—			7.7			6			—			13.7
Total Rock-Tenn Company shareholders’ equity	4,306.80			6,460.00			610.9			(7,070.9		)	4,306.80
Noncontrolling interests	—			0.6			—			—			0.6
Total equity	4,306.80			6,460.60			610.9			(7,070.9		)	4,307.40
	$	7,122.70		$	10,176.60		$	1,854.10		$	(8,113.7	)	$	11,039.70
Condensed Consolidating Statements of Cash Flows [Table Text Block]
		Three Months Ended December 31, 2014
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	Operating activities:
	Net cash provided by operating activities	$	42.4		$	47.2		$	249.7		$	(6.9	)	$	332.4
	Investing activities:
	Capital expenditures	—			(119.1		)	(7.8		)	—			(126.9		)
	Return of capital from unconsolidated entities	—			0.2			—			—			0.2
	Proceeds from sale of property, plant and equipment	—			3.3			0.2			—			3.5
	Intercompany notes issued	—			(83.4		)	—			83.4			—
	Intercompany notes proceeds	—			137.7			—			(137.7		)	—
	Intercompany return of capital	1.5			—			—			(1.5		)	—
	Net cash provided by (used for) investing activities	1.5			(61.3		)	(7.6		)	(55.8		)	(123.2		)
	Financing activities:
	Additions to revolving credit facilities	39.4			—			—			—			39.4
	Repayments of revolving credit facilities	(30.9		)	—			(27.8		)	—			(58.7		)
	Additions to debt	—			—			10.9			—			10.9
	Repayments of debt	—			—			(165.6		)	—			(165.6		)
	Commercial card program	—			(0.4		)	—			—			(0.4		)
	Debt issuance costs	(0.1		)	—			—			—			(0.1		)
	Issuances of common stock, net of related minimum tax withholdings	1.8			—			—			—			1.8
	Purchases of common stock	(8.7		)	—			—			—			(8.7		)
	(Repayments to) advances from consolidated entities	(13.0		)	13.8			(0.8		)	—			—
	Advances from unconsolidated entity	—			0.5			—			—			0.5
	Cash dividends paid to shareholders	(26.3		)	—			—			—			(26.3		)
	Cash distributions paid to noncontrolling interests	—			—			(1.2		)	—			(1.2		)
	Intercompany notes borrowing	—			—			83.4			(83.4		)	—
	Intercompany notes payments	—			—			(137.7		)	137.7			—
	Intercompany capital distribution	—			—			(1.5		)	1.5			—
	Intercompany dividends	—			—			(6.9		)	6.9			—
	Net cash (used for) provided by financing activities	(37.8		)	13.9			(247.2		)	62.7			(208.4		)
	Effect of exchange rate changes on cash and cash equivalents	—			—			(0.6		)	—			(0.6		)
	Increase (decrease) in cash and cash equivalents	6.1			(0.2		)	(5.7		)	—			0.2
	Cash and cash equivalents at beginning of period	14.5			1.7			16.4			—			32.6
	Cash and cash equivalents at end of period	$	20.6		$	1.5		$	10.7		$	—		$	32.8
	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
		Three Months Ended December 31, 2013
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	Operating activities:
	Net cash provided by operating activities	$	42.7		$	100		$	168.3		$	(6.5	)	$	304.5
	Investing activities:
	Capital expenditures	—			(95.0		)	(5.6		)	—			(100.6		)
	Cash paid for purchase of business, net of cash acquired	(60.0		)	—			—			—			(60.0		)
	Return of capital from unconsolidated entities	—			0.2			—			—			0.2
	Proceeds from sale of property, plant and equipment	—			3.1			0.2			—			3.3
	Proceeds from property, plant and equipment insurance settlement	—			2.7			—			—			2.7
	Intercompany notes issued	—			(13.4		)	—			13.4			—
	Intercompany notes proceeds	3.1			88			—			(91.1		)	—
	Net cash used for investing activities	(56.9		)	(14.4		)	(5.4		)	(77.7		)	(154.4		)
	Financing activities:
	Additions to revolving credit facilities	16.7			—			3.3			—			20
	Repayments of revolving credit facilities	(0.4		)	—			(21.5		)	—			(21.9		)
	Additions to debt	—			—			46.6			—			46.6
	Repayments of debt	—			—			(131.6		)	—			(131.6		)
	Issuances of common stock, net of related minimum tax withholdings	(5.9		)	—			—			—			(5.9		)
	Purchases of common stock	(53.0		)	—			—			—			(53.0		)
	Excess tax benefits from share-based compensation	—			10.2			—			—			10.2
	Advances from (repayments to) consolidated entities	73.7			(90.7		)	17			—			—
Repayments to unconsolidated entity	—			(0.2		)	—			—			(0.2		)
Cash dividends paid to shareholders	(25.8		)	—			—			—			(25.8		)
Cash distributions paid to noncontrolling interests	—			—			(0.1		)	—			(0.1		)
Intercompany notes borrowing	—			—			13.4			(13.4		)	—
Intercompany notes payments	—			—			(91.1		)	91.1			—
Intercompany dividends	—			—			(6.5		)	6.5			—
Net cash provided by (used for) financing activities	5.3			(80.7		)	(170.5		)	84.2			(161.7		)
Effect of exchange rate changes on cash and cash equivalents	—			—			(0.2		)	—			(0.2		)
(Decrease) increase in cash and cash equivalents	(8.9		)	4.9			(7.8		)	—			(11.8		)
Cash and cash equivalents at beginning of period	14.8			1.2			20.4			—			36.4
Cash and cash equivalents at end of period	$	5.9		$	6.1		$	12.6		$	—		$	24.6
Supplemental schedule of non-cash investing and financing activities:
The Condensed Consolidating Statements of Cash Flows for the three months ended December 31, 2013 do not include a $23.6 million non-cash transaction between a Guarantor Subsidiary and a Non-Guarantor Subsidiary to increase an intercompany capital investment in the Non-Guarantor Subsidiary nor to reflect the corresponding decrease in intercompany notes receivable. The additional investment into a Non-Guarantor Subsidiary was made through a non-cash conversion of an intercompany note receivable in the first quarter of fiscal 2014.
	Three Months Ended December 31, 2013
							Non-
				Guarantor			Guarantor						Consolidated
	Parent			Subsidiaries			Subsidiaries			Eliminations			Total
	(In millions)
Investing activities:
Intercompany capital investment	$	—		$	(23.6	)	$	—		$	23.6		$	—
Intercompany notes receivable	—			23.6			—			(23.6		)	—
Financing activities:
Intercompany capital contributed	$	—		$	—		$	23.6		$	(23.6	)	$	—
Intercompany note payable	—			—			(23.6		)	23.6			—
Condensed Consolidating Statements of Cash Flows, Supplemental Information [Table Text Block]	The Condensed Consolidating Statements of Cash Flows for the three months ended December 31, 2013 do not include a $23.6 million non-cash transaction between a Guarantor Subsidiary and a Non-Guarantor Subsidiary to increase an intercompany capital investment in the Non-Guarantor Subsidiary nor to reflect the corresponding decrease in intercompany notes receivable. The additional investment into a Non-Guarantor Subsidiary was made through a non-cash conversion of an intercompany note receivable in the first quarter of fiscal 2014.
		Three Months Ended December 31, 2013
								Non-
					Guarantor			Guarantor						Consolidated
		Parent			Subsidiaries			Subsidiaries			Eliminations			Total
		(In millions)
	Investing activities:
	Intercompany capital investment	$	—		$	(23.6	)	$	—		$	23.6		$	—
	Intercompany notes receivable	—			23.6			—			(23.6		)	—
	Financing activities:
	Intercompany capital contributed	$	—		$	—		$	23.6		$	(23.6	)	$	—
	Intercompany note payable	—			—			(23.6		)	23.6			—

Equity_and_Other_Comprehensive2

Equity and Other Comprehensive Income (Details) (USD $)	0 Months Ended	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Aug. 27, 2014	Dec. 31, 2014		Dec. 31, 2013	Sep. 12, 2014
Stockholders' Equity Note, Stock Split, Conversion Ratio	2
Stock Dividend Rate, Class A Common Stock	100.00%
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period		$4,307.40
Net income		125.2
Other comprehensive loss, net of tax		-21.8
Compensation expense under share-based plans		10.7
Cash dividends declared (per share - $0.1875)(2)		-26.3	[1]
Cash distributions to noncontrolling interests		-0.2
Issuance of Class A common stock, net of stock received for minimum tax withholdings		1.8
Purchases of Class A common stock		-8.7
Balance at end of period		4,388.10
Cash dividends paid per share		$0.19		$0.18
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period		4,306.80
Net income		125.1
Other comprehensive loss, net of tax		-21.8
Compensation expense under share-based plans		10.7
Cash dividends declared (per share - $0.1875)(2)		-26.3	[1]
Cash distributions to noncontrolling interests		0
Issuance of Class A common stock, net of stock received for minimum tax withholdings		1.8
Purchases of Class A common stock		-8.7
Balance at end of period		4,387.60
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period		0.6	[2]
Net income		0.1	[2]
Other comprehensive loss, net of tax		0	[2]
Compensation expense under share-based plans		0	[2]
Cash dividends declared (per share - $0.1875)(2)		0	[2]
Cash distributions to noncontrolling interests		-0.2	[2]
Issuance of Class A common stock, net of stock received for minimum tax withholdings		0	[2]
Purchases of Class A common stock		0
Balance at end of period		0.5	[2]
Maximum [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effective Tax Rate, Net of Tax Components of Other Comprehensive Income		39.00%		39.00%
Minimum [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effective Tax Rate, Net of Tax Components of Other Comprehensive Income		38.00%		38.00%
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchases of Class A common stock		($8.70)
Stock Repurchase Program, Number of Shares Authorized to be Repurchased					16.9
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased		8.5
Treasury Stock, Shares, Acquired		0.2
[1]	Includes cash dividends paid, and dividends declared but unpaid, related to the shares reserved but unissued to satisfy Smurfit-Stone bankruptcy claims.
[2]	Excludes amounts related to contingently redeemable noncontrolling interests which are separately classified outside of permanent equity in the mezzanine section of the Condensed Consolidated Balance Sheets.

Equity_and_Other_Comprehensive3

Equity and Other Comprehensive Income Schedule of Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	($495.30)	[1]	($300.60)	[1]
Other comprehensive loss before reclassifications	-34.2	[1]	-9.2	[1]
Amounts reclassified from accumulated other comprehensive loss (income)	12.4	[1]	2.5	[1]
Net current period other comprehensive income (loss)	-21.8	[1]	-6.7	[1]
Balance at end of period	-517.1	[1]	-307.3	[1]
Net actuarial loss arising during the period	-2.8		0
Prior service cost arising during the period	13.9		0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	1.7
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit), Tax	-8.8
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	-0.2	[1]	-0.2	[1]
Other comprehensive loss before reclassifications	0	[1]	0	[1]
Amounts reclassified from accumulated other comprehensive loss (income)	0	[1]	0	[1]
Net current period other comprehensive income (loss)	0	[1]	0	[1]
Balance at end of period	-0.2	[1]	-0.2	[1]
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	-498.2	[1]	-332.9	[1]
Other comprehensive loss before reclassifications	-16.7	[1]	0	[1]
Amounts reclassified from accumulated other comprehensive loss (income)	12.4	[1]	2.5	[1]
Net current period other comprehensive income (loss)	-4.3	[1]	2.5	[1]
Balance at end of period	-502.5	[1]	-330.4	[1]
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	3.1	[1]	32.5	[1]
Other comprehensive loss before reclassifications	-17.5	[1]	-9.2	[1]
Amounts reclassified from accumulated other comprehensive loss (income)	0	[1]	0	[1]
Net current period other comprehensive income (loss)	-17.5	[1]	-9.2	[1]
Balance at end of period	($14.40)	[1]	$23.30	[1]
[1]	All amounts are net of tax and noncontrolling interest.

Equity_and_Other_Comprehensive4

Equity and Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization and settlement recognition of net actuarial loss, included in pension cost	$17.70		$2.60
Amortization and curtailment recognition of prior service credit, included in pension cost	-5.2		0
Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of net actuarial loss, Pre-Tax Amount	-28.3	[1],[2]	-4	[1],[2]
Amortization of net actuarial loss, Tax	10.7	[1],[2]	1.5	[1],[2]
Amortization and settlement recognition of net actuarial loss, included in pension cost	-17.6	[1],[2]	-2.5	[1],[2]
Amortization of prior service cost, Pre-Tax Amount	8.4	[1],[2]	0	[1],[2]
Amortization of prior service cost, Tax	-3.2	[1],[2]	0	[1],[2]
Amortization and curtailment recognition of prior service credit, included in pension cost	5.2	[1],[2]	0	[1],[2]
Total Reclassifications From Other Comprehensive Income Before Tax	-19.9	[1]	-4	[1]
Total Reclassifications From Other Comprehensive Income Tax Portion	7.5	[1]	1.5	[1]
Total Reclassifications From Other Comprehensive Income Net Of Tax	($12.40)	[1]	($2.50)	[1]
[1]	Amounts in parentheses indicate charges to earnings. Amounts pertaining to noncontrolling interests are excluded.
[2]	These accumulated other comprehensive income components are included in the computation of net periodic pension cost (See “Note 11. Retirement Plans” for additional details).

Earnings_per_Share_Details

Earnings per Share (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net income attributable to Rock-Tenn Company shareholders	$125.10	$109.70
Less: Distributed and undistributed income available to participating securities	-0.1	-0.1
Distributed and undistributed income attributable to Rock-Tenn Company shareholders	125	109.6
Basic weighted average shares outstanding	140.3	144
Basic earnings per share attributable to Rock-Tenn Company shareholders	$0.89	$0.76
Less: Distributed and undistributed income available to participating securities	-0.1	-0.1
Distributed and undistributed income attributable to Rock-Tenn Company shareholders	$125	$109.60
Effect of dilutive stock options and non-participating securities	2.5	2.6
Diluted weighted average shares outstanding	142.8	146.6
Diluted earnings per share attributable to Rock-Tenn Company shareholders	$0.88	$0.75
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.8	0.1
Smurfit Stone [Member]
Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Weighted average shares reserved	0.3	0.3

Acquisitions_Details

Acquisitions (Details) (USD $)	0 Months Ended		1 Months Ended
In Millions, unless otherwise specified	Aug. 29, 2014	16-May-14	Dec. 20, 2013	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill				$1,922.50	$1,926.40
A.G. Industries, Inc. [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition	29-Aug-14
Business Acquisition, Cost of Acquired Entity, Purchase Price Net of Cash Acquired	70
Goodwill	13.2
Liabilities assumed	5.8
Maximum Cost of the Sec 338(h)(10) Election	2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	0.5
Simpson Tacoma Kraft Paper Mill [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition		16-May-14
Business Acquisition, Cost of Acquired Entity, Purchase Price Net of Cash Acquired		340.6
Goodwill		29
Liabilities assumed		28.9
NPG Inc. [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition			20-Dec-13
Business Acquisition, Cost of Acquired Entity, Purchase Price Net of Cash Acquired			59.6
Goodwill			27.9
Liabilities assumed			19.5			19.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			1.7
Business Acquisition, Purchase Price Allocation, Notes Payable and LT Debt			0.6
Contract-Based Intangible Assets [Member] | Simpson Tacoma Kraft Paper Mill [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		22.6
Finite-Lived Intangible Asset, Useful Life		7 years 2 months
Customer Relationships [Member] | A.G. Industries, Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	26
Customer Relationships [Member] | Simpson Tacoma Kraft Paper Mill [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		14.6
Finite-Lived Intangible Asset, Useful Life		20 years 0 months
Customer Relationships [Member] | NPG Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$14.50
Finite-Lived Intangible Asset, Useful Life			9 years 0 months
Maximum [Member] | Customer Relationships [Member] | A.G. Industries, Inc. [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years 6 months
Minimum [Member] | Customer Relationships [Member] | A.G. Industries, Inc. [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years 0 months

Restructuring_and_Other_Costs_2

Restructuring and Other Costs, Net (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	$5.40		$17.60
Restructuring and Related Cost, Cost Incurred to Date	263.9
Restructuring and Related Cost, Expected Cost	267.1
Acquisition Expenses	0.5		1.4
Integration expenses	2.1		5.8
Net Property, Plant and Equipment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.4	[1]	4.9	[1]
Restructuring and Related Cost, Cost Incurred to Date	46	[1]
Restructuring and Related Cost, Expected Cost	46	[1]
Employee severance and other EE costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.4		-0.2
Restructuring and Related Cost, Cost Incurred to Date	32.7
Restructuring and Related Cost, Expected Cost	32.7
Equipment and Inventory Relocation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.1		1.7
Restructuring and Related Cost, Cost Incurred to Date	8.6
Restructuring and Related Cost, Expected Cost	9.2
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.9		1.5
Restructuring and Related Cost, Cost Incurred to Date	15
Restructuring and Related Cost, Expected Cost	17.5
Other Costs Related to Restructuring and Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	3.6		9.7
Restructuring and Related Cost, Cost Incurred to Date	161.6
Restructuring and Related Cost, Expected Cost	161.7
Corrugated Packaging [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	1	[2]	4	[2]
Restructuring and Related Cost, Cost Incurred to Date	83	[2]
Restructuring and Related Cost, Expected Cost	85.1	[2]
Corrugated Packaging [Member] | Net Property, Plant and Equipment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.2	[1],[2]	1.5	[1],[2]
Restructuring and Related Cost, Cost Incurred to Date	29.3	[1],[2]
Restructuring and Related Cost, Expected Cost	29.3	[1],[2]
Corrugated Packaging [Member] | Employee severance and other EE costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[2]	0	[2]
Restructuring and Related Cost, Cost Incurred to Date	29.2	[2]
Restructuring and Related Cost, Expected Cost	29.2	[2]
Corrugated Packaging [Member] | Equipment and Inventory Relocation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.1	[2]	1.3	[2]
Restructuring and Related Cost, Cost Incurred to Date	7.2	[2]
Restructuring and Related Cost, Expected Cost	7.3	[2]
Corrugated Packaging [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.6	[2]	1.1	[2]
Restructuring and Related Cost, Cost Incurred to Date	11.8	[2]
Restructuring and Related Cost, Expected Cost	13.8	[2]
Corrugated Packaging [Member] | Other Costs Related to Restructuring and Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.1	[2]	0.1	[2]
Restructuring and Related Cost, Cost Incurred to Date	5.5	[2]
Restructuring and Related Cost, Expected Cost	5.5	[2]
Consumer Packaging [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.5	[3]	-0.1	[3]
Restructuring and Related Cost, Cost Incurred to Date	7.6	[3]
Restructuring and Related Cost, Expected Cost	7.7	[3]
Consumer Packaging [Member] | Net Property, Plant and Equipment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.1	[1],[3]	0	[1],[3]
Restructuring and Related Cost, Cost Incurred to Date	4.5	[1],[3]
Restructuring and Related Cost, Expected Cost	4.5	[1],[3]
Consumer Packaging [Member] | Employee severance and other EE costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.4	[3]	-0.1	[3]
Restructuring and Related Cost, Cost Incurred to Date	2	[3]
Restructuring and Related Cost, Expected Cost	2	[3]
Consumer Packaging [Member] | Equipment and Inventory Relocation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[3]	0	[3]
Restructuring and Related Cost, Cost Incurred to Date	0.5	[3]
Restructuring and Related Cost, Expected Cost	0.5	[3]
Consumer Packaging [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[3]	0	[3]
Restructuring and Related Cost, Cost Incurred to Date	0.4	[3]
Restructuring and Related Cost, Expected Cost	0.5	[3]
Consumer Packaging [Member] | Other Costs Related to Restructuring and Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[3]	0	[3]
Restructuring and Related Cost, Cost Incurred to Date	0.2	[3]
Restructuring and Related Cost, Expected Cost	0.2	[3]
Recycling [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	1.2	[4]	6.2	[4]
Restructuring and Related Cost, Cost Incurred to Date	24.4	[4]
Restructuring and Related Cost, Expected Cost	25.4	[4]
Recycling [Member] | Net Property, Plant and Equipment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.1	[1],[4]	3.4	[1],[4]
Restructuring and Related Cost, Cost Incurred to Date	12.1	[1],[4]
Restructuring and Related Cost, Expected Cost	12.1	[1],[4]
Recycling [Member] | Employee severance and other EE costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[4]	-0.1	[4]
Restructuring and Related Cost, Cost Incurred to Date	1.3	[4]
Restructuring and Related Cost, Expected Cost	1.3	[4]
Recycling [Member] | Equipment and Inventory Relocation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[4]	0.4	[4]
Restructuring and Related Cost, Cost Incurred to Date	0.8	[4]
Restructuring and Related Cost, Expected Cost	1.3	[4]
Recycling [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.3	[4]	0.4	[4]
Restructuring and Related Cost, Cost Incurred to Date	2.8	[4]
Restructuring and Related Cost, Expected Cost	3.2	[4]
Recycling [Member] | Other Costs Related to Restructuring and Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0.8	[4]	2.1	[4]
Restructuring and Related Cost, Cost Incurred to Date	7.4	[4]
Restructuring and Related Cost, Expected Cost	7.5	[4]
All Other Segments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	2.7	[5]	7.5	[5]
Restructuring and Related Cost, Cost Incurred to Date	148.9	[5]
Restructuring and Related Cost, Expected Cost	148.9	[5]
Acquisition, Transaction and Other Related Costs	2.7		7.5
Acquisition Expenses	0.5		1.4
Integration expenses	2.2		6.1
All Other Segments [Member] | Net Property, Plant and Equipment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[1],[5]	0	[1],[5]
Restructuring and Related Cost, Cost Incurred to Date	0.1	[1],[5]
Restructuring and Related Cost, Expected Cost	0.1	[1],[5]
All Other Segments [Member] | Employee severance and other EE costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[5]	0	[5]
Restructuring and Related Cost, Cost Incurred to Date	0.2	[5]
Restructuring and Related Cost, Expected Cost	0.2	[5]
All Other Segments [Member] | Equipment and Inventory Relocation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[5]	0	[5]
Restructuring and Related Cost, Cost Incurred to Date	0.1	[5]
Restructuring and Related Cost, Expected Cost	0.1	[5]
All Other Segments [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	0	[5]	0	[5]
Restructuring and Related Cost, Cost Incurred to Date	0	[5]
Restructuring and Related Cost, Expected Cost	0	[5]
All Other Segments [Member] | Other Costs Related to Restructuring and Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and other costs, net	2.7	[5]	7.5	[5]
Restructuring and Related Cost, Cost Incurred to Date	148.5	[5]
Restructuring and Related Cost, Expected Cost	$148.50	[5]
[1]	We have defined “Net Property, Plant and Equipment” as used in this Note 6 to represent property, plant and equipment impairment losses, subsequent adjustments to fair value for assets classified as held for sale, subsequent (gains) or losses on sales of property, plant and equipment and related parts and supplies, and accelerated depreciation on such assets, if any.
[2]	The Corrugated Packaging segment current quarter and prior year quarter charges primarily reflect on-going closure costs at previously closed facilities net of asset sales. The cumulative charges primarily reflect charges associated with the closure of corrugated container plants and the closure of the Matane, Quebec containerboard mill, including gains and losses associated with the sale of assets associated with the closures. We have transferred a substantial portion of each closed facility's production to our other facilities.
[3]	The Consumer Packaging segment current quarter charges are primarily associated with the closure of a small converting facility and on-going closure activity at previously closed facilities including the Cincinnati, OH specialty recycled paperboard mill. The prior year quarter charges also primarily reflect on-going closure costs associated with previously closed facilities. The cumulative charges primarily reflect charges associated with the closure of converting facilities and a specialty recycled paperboard mill. We have transferred a substantial portion of each closed facility’s production to our other facilities.
[4]	The Recycling segment current quarter charges are primarily associated with the on-going closure costs at previously closed facilities. The prior year quarter charges primarily reflect charges associated with a collection facility and on-going closure costs associated with previously closed facilities. The cumulative charges primarily reflect the charges associated with the closure of collection facilities including gains and losses associated with the sale of assets associated with the closures.
[5]	The expenses in the “Other” segment primarily reflect costs that we consider as Corporate, including the “Other Costs” column that primarily reflects costs incurred as a result of the Smurfit-Stone Acquisition, such as merger integration expenses. Also included in the “Other” segment are insignificant costs related to our Merchandising Displays segment. The pre-tax charges in the “Other Costs” column are summarized below (in millions): AcquisitionExpenses IntegrationExpenses TotalCurrent Qtr.$0.5 $2.2 $2.7Prior Year Qtr.$1.4 $6.1 $7.5Acquisition expenses include expenses associated with acquisitions, whether consummated or not, as well as litigation expenses associated with the Smurfit-Stone Acquisition, net of recoveries. Acquisition expenses primarily consist of advisory, legal, accounting, valuation and other professional or consulting fees. Integration expenses primarily reflect severance and other employee costs, professional services including work being performed to facilitate the Smurfit-Stone integration including information systems integration costs, lease expense and other costs. Due to the complexity and duration of the integration activities, the precise amount expected to be incurred has not been quantified above. We expect integration activities related to the Smurfit-Stone Acquisition to continue during fiscal 2015.

Restructuring_and_Other_Costs_3

Restructuring and Other Costs, Net Restructuring Accrual (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Accrual at beginning of period	$10.90	$21.80
Additional accruals	0.2	1.1
Payments	-2.7	-6.7
Adjustment to accruals	0.9	-0.5
Accrual at end of period	$9.30	$15.70

Restructuring_and_Other_Costs_4

Restructuring and Other Costs, Net Restructuring Costs (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Additional accruals and adjustments to accruals (see table above)	$1.10	$0.60
Acquisition expenses	0.5	1.4
Integration expenses	2.1	5.8
Net property, plant and equipment	0.4	4.9
Severance and other employee expense (income)	0.4	0.6
Equipment and inventory relocation costs	0.1	1.7
Facility carrying costs	0.9	1.5
Other (income) expense	-0.1	1.1
Restructuring and other costs, net	$5.40	$17.60

Income_Taxes_Details

Income Taxes (Details)	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Effective tax rates	33.00%	35.80%

Inventories_Details

Inventories (Details) (USD $)	Dec. 31, 2014	Sep. 30, 2014
In Millions, unless otherwise specified
Finished goods and work in process	$422.90	$421.80
Raw materials	473.6	465.7
Spare parts and supplies	223.7	225.3
Inventories at FIFO cost	1,120.20	1,112.80
LIFO reserve	-88.3	-83.6
Net inventories	$1,031.90	$1,029.20

Debt_Details

Debt (Details) (USD $)	Dec. 31, 2014	Sep. 30, 2014	Sep. 27, 2012
Debt Instrument [Line Items]
Long-term debt	$2,807,700,000	$2,984,700,000
Current portion of debt	128,200,000	132,600,000
Long-term debt due after one year	2,679,500,000	2,852,100,000
Percentage of Senior Notes Aggregate Principal Amount for Change of Control	101.00%
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Long-term debt	12,700,000	12,800,000
March 2019 Notes [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt	349,800,000	349,800,000
March 2020 Notes [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt	348,000,000	347,900,000
March 2022 Notes [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt	399,400,000	399,400,000
March 2023 Notes [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt	347,100,000	347,000,000
Credit Facility [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity			2,700,000,000
Term Loan Facilities [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Long-term debt	947,500,000	947,500,000
Revolving Credit Facility [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity			1,475,000,000
Debt Instrument, Term, in Years			5
Credit Facility, remaining borrowing capacity	1,400,000,000
Revolving Credit Facility [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Letters of credit outstanding, amount	40,900,000
Revolving Credit Facility [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Long-term debt	98,200,000	120,300,000
Term Loan Facility [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Credit Facility, maximum borrowing capacity			1,223,000,000
Debt Instrument, Term, in Years			5
Receivables Facility [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Long-term debt	305,000,000	460,000,000
Interest rate	0.90%	0.89%
Asset Securitization Facility Commitment Fee Percentage	0.25%	0.25%
Receivables backed financing, maximum borrowing amount	700,000,000
Debt Instrument, Maximum Borrowing Capacity, Amount	620,400,000	647,700,000
Loans and Leases Receivable, Collateral for Secured Borrowings	$803,600,000

Fair_Value_Fair_Value_by_Balan

Fair Value Fair Value by Balance Sheet Grouping (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013	Sep. 30, 2014		Feb. 03, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	$2,875.50			$3,062.30
Maximum Eligible Receivables That May Be Sold						205
Decrease in accounts receivable from transfers, net	6.4		65
Transfers of Financial Assets Accounted for as Sale, Initial Fair Value of Assets Obtained as Proceeds	219.4		98.5
Cash Flows Between Transferor and Transferee, Proceeds from Collections Reinvested in Revolving Period Transfers	219.8		33.5
Receivable from Financial Institution, Current	3.6			10.4
Notes Payable, Other Payables [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	12.9	[1],[2]		13	[1],[2]
March 2019 Notes [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	371.8	[3]		376.1	[3]
March 2020 Notes [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	354.4	[3]		357.5	[3]
March 2022 Notes [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	430.3	[3]		430	[3]
March 2023 Notes [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	355.4	[3]		357.9	[3]
Term Loan Facilities [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	947.5	[1]		947.5	[1]
Revolving Credit Facility [Member] | Line of Credit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	98.2	[1]		120.3	[1]
Receivables Facility [Member] | Secured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	305	[1]		460	[1]
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	2,807.70			2,984.70
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Notes Payable, Other Payables [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	12.7			12.8
Carrying (Reported) Amount, Fair Value Disclosure [Member] | March 2019 Notes [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	349.8			349.8
Carrying (Reported) Amount, Fair Value Disclosure [Member] | March 2020 Notes [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	348			347.9
Carrying (Reported) Amount, Fair Value Disclosure [Member] | March 2022 Notes [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	399.4			399.4
Carrying (Reported) Amount, Fair Value Disclosure [Member] | March 2023 Notes [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	347.1			347
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Term Loan Facilities [Member] | Unsecured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	947.5			947.5
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Revolving Credit Facility [Member] | Line of Credit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	98.2			120.3
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Receivables Facility [Member] | Secured Debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of debt	$305			$460
[1]	Fair value approximates the carrying amount as the variable interest rates reprice frequently at observable current market rates. As such, fair value is categorized as level 2 within the fair value hierarchy.
[2]	Fair value for certain debt is estimated based on the discounted value of future cash flows using observable current market interest rates offered for debt of similar credit risk and maturity. As such, fair value is categorized as level 2 within the fair value hierarchy.
[3]	Fair value is categorized as level 2 within the fair value hierarchy since the notes trade infrequently. Fair value is based on quoted market prices.

Retirement_Plans_Details

Retirement Plans (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$7.70	$7.90
Interest cost	49.6	55
Expected return on plan assets	-65	-63.9
Amortization of net actuarial (gain) loss	8.7	4.3
Amortization of prior service (credit) cost	0.3	0.3
Settlement loss recognized	20	0
Company defined benefit plan expense	21.3	3.6
Multiemployer and other plans	1.3	1.5
Net pension cost	22.6	5.1
Fiscal year anticipated contributions by employer	159
Contributions by employer to pension and supplemental retirement plans	6.4	37.2
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)	22.1
Lump Sum Pension Settlement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Settlement loss recognized	20
Defined Benefit Plan, Settlements, Benefit Obligation	163.7
Defined Benefit Plan, Settlements, Plan Assets	135.1
Gain Recorded to Other Comprehensive Income Related to the Settlement and Remeasurement of Pension Offer	28.6
Defined Benefit Plan, Actuarial Gain (Loss)	-32.5
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Actuarial Gain (Loss), before Tax	-3.9
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.1	0.3
Interest cost	1.2	1.5
Amortization of net actuarial (gain) loss	-0.3	-0.2
Amortization of prior service (credit) cost	-0.5	-0.3
Defined Benefit Plan, Recognized Net (Gain) Loss Due to Curtailments	-8.1	0
Postretirement plan (income) expense	-7.6	1.3
Contributions by employer to pension and supplemental retirement plans	2.7	2.9
Defined Benefit Plan, Effect of Settlements and Curtailments on Accumulated Benefit Obligation	$0.90

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified	T
Commitments and Contingencies [Line Items]
Number of tons of CO2 equal to or greater than produced by facility subject to EPA rule	25,000
Accrual for Environmental Loss Contingencies	$4.30
Seven Hills [Member]
Commitments and Contingencies [Line Items]
Equity Method Investment, Ownership Percentage	49.00%
Unrecorded Contingent Purchase Obligation, Amount	8
Percent of Ownership Acquired, Contingent Purchase Obligation	49.00%
Other Entities [Member] | Guarantee Type, Other [Member]
Commitments and Contingencies [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	4
Smurfit Stone [Member]
Commitments and Contingencies [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	5
Other Long Term Liabilities [Member]
Commitments and Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	2.7
Other Current Liabilities [Member]
Commitments and Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	$1.60

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$2,565.50		$2,408.20
Net sales	2,514.20		2,362.60
Pension lump sum settlement and retiree medical curtailment, net	-11.9		0
Restructuring and other costs, net	-5.4		-17.6
Interest expense	-23.3		-24
Interest income and other income (expense), net	0.2		-0.8
Income before income taxes	187.6		172.3
Income tax expense	-62		-61.7
Consolidated net income	125.6		110.6
Less: Net income attributable to noncontrolling interests	-0.5		-0.9
Net income attributable to Rock-Tenn Company shareholders	125.1		109.7
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	2,514.20		2,362.60
Segment Reporting Information, Segment Income	243.9		234.7
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	51.3		45.6
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Pension lump sum settlement and retiree medical curtailment, net	-11.9		0
Non-allocated expenses	-15.9		-20
Interest expense	-23.3		-24
Interest income and other income (expense), net	0.2		-0.8
Corporate, Non-Segment and Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Restructuring and other costs, net	-5.4		-17.6
Corrugated Packaging [Member]
Segment Reporting Information [Line Items]
Revenues	1,768.20		1,651.90
Restructuring and other costs, net	-1	[1]	-4	[1]
Corrugated Packaging [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,735.70		1,622.20
Segment Reporting Information, Segment Income	183.1		157.7
Corrugated Packaging [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	32.5		29.7
Consumer Packaging [Member]
Segment Reporting Information [Line Items]
Revenues	478.8		472.1
Restructuring and other costs, net	-0.5	[2]	0.1	[2]
Consumer Packaging [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	471.3		466.4
Segment Reporting Information, Segment Income	52.6		57.6
Consumer Packaging [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	7.5		5.7
Merchandising Displays [Member]
Segment Reporting Information [Line Items]
Revenues	238.2		184.6
Merchandising Displays [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	232.3		180.2
Segment Reporting Information, Segment Income	6.4		19.3
Merchandising Displays [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	5.9		4.4
Recycling [Member]
Segment Reporting Information [Line Items]
Revenues	80.3		99.6
Restructuring and other costs, net	-1.2	[3]	-6.2	[3]
Recycling [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	74.9		93.8
Segment Reporting Information, Segment Income	1.8		0.1
Recycling [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	$5.40		$5.80
[1]	The Corrugated Packaging segment current quarter and prior year quarter charges primarily reflect on-going closure costs at previously closed facilities net of asset sales. The cumulative charges primarily reflect charges associated with the closure of corrugated container plants and the closure of the Matane, Quebec containerboard mill, including gains and losses associated with the sale of assets associated with the closures. We have transferred a substantial portion of each closed facility's production to our other facilities.
[2]	The Consumer Packaging segment current quarter charges are primarily associated with the closure of a small converting facility and on-going closure activity at previously closed facilities including the Cincinnati, OH specialty recycled paperboard mill. The prior year quarter charges also primarily reflect on-going closure costs associated with previously closed facilities. The cumulative charges primarily reflect charges associated with the closure of converting facilities and a specialty recycled paperboard mill. We have transferred a substantial portion of each closed facility’s production to our other facilities.
[3]	The Recycling segment current quarter charges are primarily associated with the on-going closure costs at previously closed facilities. The prior year quarter charges primarily reflect charges associated with a collection facility and on-going closure costs associated with previously closed facilities. The cumulative charges primarily reflect the charges associated with the closure of collection facilities including gains and losses associated with the sale of assets associated with the closures.

Selected_Consolidating_Financi2

Selected Consolidating Financial Statements of Parent, Guarantors and Non-Guarantors Guarantor Financial Data (Income Statement) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Net sales	$2,514.20	$2,362.60
Cost of goods sold	2,044.70	1,914.80
Gross profit	469.5	447.8
Selling, general and administrative expenses	243.7	234.8
Pension lump sum settlement and retiree medical curtailment, net	11.9	0
Restructuring and other costs, net	5.4	17.6
Operating profit	208.5	195.4
Interest expense	-23.3	-24
Interest income and other income (expense), net	0.2	-0.8
Equity in income of unconsolidated entities	2.2	1.7
Equity in income (loss) of consolidated entities	0	0
Income before income taxes	187.6	172.3
Income tax (expense) benefit	-62	-61.7
Consolidated net income	125.6	110.6
Less: Net income attributable to noncontrolling interests	-0.5	-0.9
Net income attributable to Rock-Tenn Company shareholders	125.1	109.7
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	103.3	103
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0
Cost of goods sold	0	0
Gross profit	0	0
Selling, general and administrative expenses	0	0.5
Pension lump sum settlement and retiree medical curtailment, net	0
Restructuring and other costs, net	0	0.2
Operating profit	0	-0.7
Interest expense	-23.2	-22.5
Interest income and other income (expense), net	1.2	2.2
Equity in income of unconsolidated entities	0	0
Equity in income (loss) of consolidated entities	138.5	122.5
Income before income taxes	116.5	101.5
Income tax (expense) benefit	8.6	8.2
Consolidated net income	125.1	109.7
Less: Net income attributable to noncontrolling interests	0	0
Net income attributable to Rock-Tenn Company shareholders	125.1	109.7
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	103.3	103
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	2,290.40	2,141.80
Cost of goods sold	1,870	1,731.90
Gross profit	420.4	409.9
Selling, general and administrative expenses	211.8	207.3
Pension lump sum settlement and retiree medical curtailment, net	11.9
Restructuring and other costs, net	5.1	16.4
Operating profit	191.6	186.2
Interest expense	-0.4	-1.4
Interest income and other income (expense), net	-29.5	-27.5
Equity in income of unconsolidated entities	2.2	1.7
Equity in income (loss) of consolidated entities	27.8	17.8
Income before income taxes	191.7	176.8
Income tax (expense) benefit	-56.6	-59.8
Consolidated net income	135.1	117
Less: Net income attributable to noncontrolling interests	-0.3	-0.7
Net income attributable to Rock-Tenn Company shareholders	134.8	116.3
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	113.7	110.3
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	410.1	383.7
Cost of goods sold	327.9	313.9
Gross profit	82.2	69.8
Selling, general and administrative expenses	31.9	27
Pension lump sum settlement and retiree medical curtailment, net	0
Restructuring and other costs, net	0.3	1
Operating profit	50	41.8
Interest expense	-4.5	-7.2
Interest income and other income (expense), net	0.2	-0.3
Equity in income of unconsolidated entities	0	0
Equity in income (loss) of consolidated entities	0	0
Income before income taxes	45.7	34.3
Income tax (expense) benefit	-14	-10.1
Consolidated net income	31.7	24.2
Less: Net income attributable to noncontrolling interests	-0.2	-0.2
Net income attributable to Rock-Tenn Company shareholders	31.5	24
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	15.7	15.2
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales	-186.3	-162.9
Cost of goods sold	-153.2	-131
Gross profit	-33.1	-31.9
Selling, general and administrative expenses	0	0
Pension lump sum settlement and retiree medical curtailment, net	0
Restructuring and other costs, net	0	0
Operating profit	-33.1	-31.9
Interest expense	4.8	7.1
Interest income and other income (expense), net	28.3	24.8
Equity in income of unconsolidated entities	0	0
Equity in income (loss) of consolidated entities	-166.3	-140.3
Income before income taxes	-166.3	-140.3
Income tax (expense) benefit	0	0
Consolidated net income	-166.3	-140.3
Less: Net income attributable to noncontrolling interests	0	0
Net income attributable to Rock-Tenn Company shareholders	-166.3	-140.3
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	($129.40)	($125.50)

Selected_Consolidating_Financi3

Selected Consolidating Financial Statements of Parent, Guarantors and Non-Guarantors Guarantor Financial Data (Balance Sheet) (Details) (USD $)	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
In Millions, unless otherwise specified
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$32.80	$32.60	$24.60	$36.40
Restricted cash	8.8	8.8
Accounts receivable, net	1,016.80	1,118.70
Inventories	1,031.90	1,029.20
Other current assets	232	243.2
Intercompany receivables	0	0
Total current assets	2,322.30	2,432.50
Net property, plant and equipment	5,820.60	5,832.60
Goodwill	1,922.50	1,926.40
Intangibles, net	668.1	691.1
Intercompany notes receivable	0	0
Investment in consolidated subsidiaries	0	0
Other assets	164.3	157.1
Assets	10,897.80	11,039.70
Current portion of debt	128.2	132.6
Accounts payable	756.8	812.8
Accrued compensation and benefits	171.9	224.4
Other current liabilities	221.4	190.7
Intercompany payables	0	0
Total current liabilities	1,278.30	1,360.50
Long-term debt due after one year	2,679.50	2,852.10
Intercompany notes payable	0	0
Pension liabilities, net of current portion	1,097	1,090.90
Postretirement benefit liabilities, net of current portion	100	101.7
Deferred income taxes	1,181	1,132.80
Other long-term liabilities	161	180.6
Redeemable noncontrolling interests	12.9	13.7
Total Rock-Tenn Company shareholders’ equity	4,387.60	4,306.80
Noncontrolling interests	0.5	0.6
Total equity	4,388.10	4,307.40
Liabilities and Equity	10,897.80	11,039.70
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	20.6	14.5	5.9	14.8
Restricted cash	8.8	8.8
Accounts receivable, net	0	0
Inventories	0	0
Other current assets	12.6	34.6
Intercompany receivables	100.3	87.2
Total current assets	142.3	145.1
Net property, plant and equipment	0	0
Goodwill	0	0
Intangibles, net	0	0
Intercompany notes receivable	265.8	266.5
Investment in consolidated subsidiaries	6,791.80	6,680.30
Other assets	27.8	30.8
Assets	7,227.70	7,122.70
Current portion of debt	122.3	91.7
Accounts payable	0	0
Accrued compensation and benefits	0	0
Other current liabilities	29.9	14.2
Intercompany payables	0	0
Total current liabilities	152.2	105.9
Long-term debt due after one year	2,308.90	2,330.90
Intercompany notes payable	374.9	374.9
Pension liabilities, net of current portion	0	0
Postretirement benefit liabilities, net of current portion	0	0
Deferred income taxes	0	0
Other long-term liabilities	4.1	4.2
Redeemable noncontrolling interests	0	0
Total Rock-Tenn Company shareholders’ equity	4,387.60	4,306.80
Noncontrolling interests	0	0
Total equity	4,387.60	4,306.80
Liabilities and Equity	7,227.70	7,122.70
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	1.5	1.7	6.1	1.2
Restricted cash	0	0
Accounts receivable, net	104.5	93.5
Inventories	859.4	852
Other current assets	191.8	205.9
Intercompany receivables	18.9	6.3
Total current assets	1,176.10	1,159.40
Net property, plant and equipment	5,435.80	5,432.30
Goodwill	1,819.50	1,820.10
Intangibles, net	633.3	655.9
Intercompany notes receivable	681.9	607.6
Investment in consolidated subsidiaries	400.1	390.6
Other assets	121.5	110.7
Assets	10,268.20	10,176.60
Current portion of debt	3.6	3.9
Accounts payable	691.8	736.1
Accrued compensation and benefits	147	196.1
Other current liabilities	179.3	178.6
Intercompany payables	108.9	82.6
Total current liabilities	1,130.60	1,197.30
Long-term debt due after one year	0.2	0.2
Intercompany notes payable	236	236
Pension liabilities, net of current portion	936.5	916.8
Postretirement benefit liabilities, net of current portion	57.6	57.6
Deferred income taxes	1,172.50	1,126.80
Other long-term liabilities	153.3	173.6
Redeemable noncontrolling interests	6.7	7.7
Total Rock-Tenn Company shareholders’ equity	6,574.30	6,460
Noncontrolling interests	0.5	0.6
Total equity	6,574.80	6,460.60
Liabilities and Equity	10,268.20	10,176.60
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	10.7	16.4	12.6	20.4
Restricted cash	0	0
Accounts receivable, net	945.3	1,048.10
Inventories	172.5	177.2
Other current assets	36.2	35.4
Intercompany receivables	15.8	13.5
Total current assets	1,180.50	1,290.60
Net property, plant and equipment	384.8	400.3
Goodwill	103	106.3
Intangibles, net	34.8	35.2
Intercompany notes receivable	0	0
Investment in consolidated subsidiaries	0	0
Other assets	20.6	21.7
Assets	1,723.70	1,854.10
Current portion of debt	2.3	37
Accounts payable	98	99.6
Accrued compensation and benefits	24.9	28.3
Other current liabilities	20.8	30.6
Intercompany payables	26.1	24.4
Total current liabilities	172.1	219.9
Long-term debt due after one year	370.4	521
Intercompany notes payable	336.8	263.2
Pension liabilities, net of current portion	160.5	174.1
Postretirement benefit liabilities, net of current portion	42.4	44.1
Deferred income taxes	14.1	12.1
Other long-term liabilities	3.6	2.8
Redeemable noncontrolling interests	6.2	6
Total Rock-Tenn Company shareholders’ equity	617.6	610.9
Noncontrolling interests	0	0
Total equity	617.6	610.9
Liabilities and Equity	1,723.70	1,854.10
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0
Restricted cash	0	0
Accounts receivable, net	-33	-22.9
Inventories	0	0
Other current assets	-8.6	-32.7
Intercompany receivables	-135	-107
Total current assets	-176.6	-162.6
Net property, plant and equipment	0	0
Goodwill	0	0
Intangibles, net	0	0
Intercompany notes receivable	-947.7	-874.1
Investment in consolidated subsidiaries	-7,191.90	-7,070.90
Other assets	-5.6	-6.1
Assets	-8,321.80	-8,113.70
Current portion of debt	0	0
Accounts payable	-33	-22.9
Accrued compensation and benefits	0	0
Other current liabilities	-8.6	-32.7
Intercompany payables	-135	-107
Total current liabilities	-176.6	-162.6
Long-term debt due after one year	0	0
Intercompany notes payable	-947.7	-874.1
Pension liabilities, net of current portion	0	0
Postretirement benefit liabilities, net of current portion	0	0
Deferred income taxes	-5.6	-6.1
Other long-term liabilities	0	0
Redeemable noncontrolling interests	0	0
Total Rock-Tenn Company shareholders’ equity	-7,191.90	-7,070.90
Noncontrolling interests	0	0
Total equity	-7,191.90	-7,070.90
Liabilities and Equity	($8,321.80)	($8,113.70)

Selected_Consolidating_Financi4

Selected Consolidating Financial Statements of Parent, Guarantors and Non-Guarantors Guarantor Financial Data (Cash Flow) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used For) Operating Activities	$332.40	$304.50
Capital expenditures	-126.9	-100.6
Cash paid for purchase of business, net of cash acquired	0	-60
Return of capital from unconsolidated entities	0.2	0.2
Proceeds from sale of property, plant and equipment	3.5	3.3
Proceeds from property, plant and equipment insurance settlement	0	2.7
Intercompany notes issued	0	0
Intercompany notes proceeds	0	0
Intercompany return of capital	0
Net cash used for investing activities	-123.2	-154.4
Additions to revolving credit facilities	39.4	20
Repayments of revolving credit facilities	-58.7	-21.9
Additions to debt	10.9	46.6
Repayments of debt	-165.6	-131.6
Commercial card program	-0.4	0
Debt issuance costs	-0.1	0
Issuances of common stock, net of related minimum tax withholdings	1.8	-5.9
Purchases of common stock	-8.7	-53
Excess tax benefits from share-based compensation	0	10.2
(Repayments to) advances from consolidated entities	0	0
Advances from (repayments to) unconsolidated entity	0.5	-0.2
Cash dividends paid to shareholders	-26.3	-25.8
Cash distributions paid to noncontrolling interests	-1.2	-0.1
Intercompany notes borrowing	0	0
Intercompany notes payments	0	0
Intercompany capital distribution	0
Intercompany dividends	0	0
Net cash (used for) provided by financing activities	-208.4	-161.7
Effect of exchange rate changes on cash and cash equivalents	-0.6	-0.2
Increase (decrease) in cash and cash equivalents	0.2	-11.8
Cash and cash equivalents at beginning of period	32.6	36.4
Cash and cash equivalents at end of period	32.8	24.6
Non-cash Intercompany Investment Transaction Between Guarantor Subsidiary and Non-Guarantor Subsidiary		23.6
Intercompany capital investment, non-cash		0
Intercompany notes receivable, non-cash		0
Intercompany capital contributed, non-cash		0
Intercompany notes payable, non-cash		0
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used For) Operating Activities	42.4	42.7
Capital expenditures	0	0
Cash paid for purchase of business, net of cash acquired		-60
Return of capital from unconsolidated entities	0	0
Proceeds from sale of property, plant and equipment	0	0
Proceeds from property, plant and equipment insurance settlement		0
Intercompany notes issued	0	0
Intercompany notes proceeds	0	3.1
Intercompany return of capital	1.5
Net cash used for investing activities	1.5	-56.9
Additions to revolving credit facilities	39.4	16.7
Repayments of revolving credit facilities	-30.9	-0.4
Additions to debt	0	0
Repayments of debt	0	0
Commercial card program	0
Debt issuance costs	-0.1
Issuances of common stock, net of related minimum tax withholdings	1.8	-5.9
Purchases of common stock	-8.7	-53
Excess tax benefits from share-based compensation		0
(Repayments to) advances from consolidated entities	-13	73.7
Advances from (repayments to) unconsolidated entity	0	0
Cash dividends paid to shareholders	-26.3	-25.8
Cash distributions paid to noncontrolling interests	0	0
Intercompany notes borrowing	0	0
Intercompany notes payments	0	0
Intercompany capital distribution	0
Intercompany dividends	0	0
Net cash (used for) provided by financing activities	-37.8	5.3
Effect of exchange rate changes on cash and cash equivalents	0	0
Increase (decrease) in cash and cash equivalents	6.1	-8.9
Cash and cash equivalents at beginning of period	14.5	14.8
Cash and cash equivalents at end of period	20.6	5.9
Intercompany capital investment, non-cash		0
Intercompany notes receivable, non-cash		0
Intercompany capital contributed, non-cash		0
Intercompany notes payable, non-cash		0
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used For) Operating Activities	47.2	100
Capital expenditures	-119.1	-95
Cash paid for purchase of business, net of cash acquired		0
Return of capital from unconsolidated entities	0.2	0.2
Proceeds from sale of property, plant and equipment	3.3	3.1
Proceeds from property, plant and equipment insurance settlement		2.7
Intercompany notes issued	-83.4	-13.4
Intercompany notes proceeds	137.7	88
Intercompany return of capital	0
Net cash used for investing activities	-61.3	-14.4
Additions to revolving credit facilities	0	0
Repayments of revolving credit facilities	0	0
Additions to debt	0	0
Repayments of debt	0	0
Commercial card program	-0.4
Debt issuance costs	0
Issuances of common stock, net of related minimum tax withholdings	0	0
Purchases of common stock	0	0
Excess tax benefits from share-based compensation		10.2
(Repayments to) advances from consolidated entities	13.8	-90.7
Advances from (repayments to) unconsolidated entity	0.5	-0.2
Cash dividends paid to shareholders	0	0
Cash distributions paid to noncontrolling interests	0	0
Intercompany notes borrowing	0	0
Intercompany notes payments	0	0
Intercompany capital distribution	0
Intercompany dividends	0	0
Net cash (used for) provided by financing activities	13.9	-80.7
Effect of exchange rate changes on cash and cash equivalents	0	0
Increase (decrease) in cash and cash equivalents	-0.2	4.9
Cash and cash equivalents at beginning of period	1.7	1.2
Cash and cash equivalents at end of period	1.5	6.1
Intercompany capital investment, non-cash		-23.6
Intercompany notes receivable, non-cash		23.6
Intercompany capital contributed, non-cash		0
Intercompany notes payable, non-cash		0
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used For) Operating Activities	249.7	168.3
Capital expenditures	-7.8	-5.6
Cash paid for purchase of business, net of cash acquired		0
Return of capital from unconsolidated entities	0	0
Proceeds from sale of property, plant and equipment	0.2	0.2
Proceeds from property, plant and equipment insurance settlement		0
Intercompany notes issued	0	0
Intercompany notes proceeds	0	0
Intercompany return of capital	0
Net cash used for investing activities	-7.6	-5.4
Additions to revolving credit facilities	0	3.3
Repayments of revolving credit facilities	-27.8	-21.5
Additions to debt	10.9	46.6
Repayments of debt	-165.6	-131.6
Commercial card program	0
Debt issuance costs	0
Issuances of common stock, net of related minimum tax withholdings	0	0
Purchases of common stock	0	0
Excess tax benefits from share-based compensation		0
(Repayments to) advances from consolidated entities	-0.8	17
Advances from (repayments to) unconsolidated entity	0	0
Cash dividends paid to shareholders	0	0
Cash distributions paid to noncontrolling interests	-1.2	-0.1
Intercompany notes borrowing	83.4	13.4
Intercompany notes payments	-137.7	-91.1
Intercompany capital distribution	-1.5
Intercompany dividends	-6.9	-6.5
Net cash (used for) provided by financing activities	-247.2	-170.5
Effect of exchange rate changes on cash and cash equivalents	-0.6	-0.2
Increase (decrease) in cash and cash equivalents	-5.7	-7.8
Cash and cash equivalents at beginning of period	16.4	20.4
Cash and cash equivalents at end of period	10.7	12.6
Intercompany capital investment, non-cash		0
Intercompany notes receivable, non-cash		0
Intercompany capital contributed, non-cash		23.6
Intercompany notes payable, non-cash		-23.6
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used For) Operating Activities	-6.9	-6.5
Capital expenditures	0	0
Cash paid for purchase of business, net of cash acquired		0
Return of capital from unconsolidated entities	0	0
Proceeds from sale of property, plant and equipment	0	0
Proceeds from property, plant and equipment insurance settlement		0
Intercompany notes issued	83.4	13.4
Intercompany notes proceeds	-137.7	-91.1
Intercompany return of capital	-1.5
Net cash used for investing activities	-55.8	-77.7
Additions to revolving credit facilities	0	0
Repayments of revolving credit facilities	0	0
Additions to debt	0	0
Repayments of debt	0	0
Commercial card program	0
Debt issuance costs	0
Issuances of common stock, net of related minimum tax withholdings	0	0
Purchases of common stock	0	0
Excess tax benefits from share-based compensation		0
(Repayments to) advances from consolidated entities	0	0
Advances from (repayments to) unconsolidated entity	0	0
Cash dividends paid to shareholders	0	0
Cash distributions paid to noncontrolling interests	0	0
Intercompany notes borrowing	-83.4	-13.4
Intercompany notes payments	137.7	91.1
Intercompany capital distribution	1.5
Intercompany dividends	6.9	6.5
Net cash (used for) provided by financing activities	62.7	84.2
Effect of exchange rate changes on cash and cash equivalents	0	0
Increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Intercompany capital investment, non-cash		23.6
Intercompany notes receivable, non-cash		-23.6
Intercompany capital contributed, non-cash		-23.6
Intercompany notes payable, non-cash		$23.60