Accrued financing fees.

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- Definition

Amount of difference between fair value and book value.

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No definition available.

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- Definition

Debt instrument additional basis spread.

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- Definition

Debt instrument maturity year.

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No definition available.

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- Definition

Restrictions on the entity's ability to pay dividends as required by the terms of the credit facility.

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No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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- Definition

Gross amount of debt extinguished.

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No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
-Subparagraph (SX 210.5-03.7(b))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

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- Definition

The effective interest rate during the reporting period.

+ References

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

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Debt - Narrative (Detail) - USD ($)						3 Months Ended			9 Months Ended		12 Months Ended
Debt - Narrative (Detail) - USD ($)	Nov. 02, 2016	Oct. 06, 2016	Sep. 30, 2016	Aug. 31, 2016	Mar. 13, 2012	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2014	Sep. 16, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Amount of difference between fair value and book value			$ 120,900,000				$ 120,900,000		$ 120,900,000				$ (39,700,000)
Loss on debt extinguishments							85,300,000		$ 85,300,000
Weighted average interest rate on borrowings									2.20%	2.00%
Interest income from investments/other							1,300,000	$ 1,300,000	$ 4,200,000	$ 4,200,000
Repayment of debt									786,600,000	$ 271,800,000
Scenario, Forecast
Debt Instrument [Line Items]
Loss on debt extinguishments						$ 9,000,000
Third Party Purchase Notes
Debt Instrument [Line Items]
Aggregate principal amount of notes purchased												$ 274,400,000
Company Purchase Notes
Debt Instrument [Line Items]
Aggregate principal amount of notes purchased			$ 503,600,000				$ 503,600,000		$ 503,600,000
8.250% Senior Notes Due 2024 \| Donnelley Financial Solutions, Inc.
Debt Instrument [Line Items]
Interest rate			8.25%				8.25%		8.25%
Maturity year									2024
8.250% Senior Notes Due 2024 \| Donnelley Financial Solutions, Inc. \| Third Party Purchase Notes
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount			$ 300,000,000				$ 300,000,000		$ 300,000,000
8.250% Senior Notes Due 2024 \| Donnelley Financial Solutions, Inc. \| Cancellation of Third Party Purchase Notes
Debt Instrument [Line Items]
Loss on debt extinguishments							$ 83,900,000
8.750% Senior Notes Due 2023 \| LSC Communications, Inc.
Debt Instrument [Line Items]
Interest rate			8.75%				8.75%		8.75%
Maturity year									2023
6.125% Senior Notes Due January 15, 2017
Debt Instrument [Line Items]
Interest rate			6.125%	6.125%			6.125%		6.125%
Maturity date				Jan. 15, 2017					Jan. 15, 2017
6.125% Senior Notes Due January 15, 2017 \| Subsequent Event
Debt Instrument [Line Items]
Redemption of outstanding principal amount	$ 155,200,000
7.25% Senior Notes Due May 15, 2018
Debt Instrument [Line Items]
Interest rate			7.25%	7.25%			7.25%		7.25%
Maturity date				May 15, 2018					May 15, 2018
7.25% Senior Notes Due May 15, 2018 \| Subsequent Event
Debt Instrument [Line Items]
Redemption of outstanding principal amount		$ 45,800,000
8.25% Senior Notes Due March 15, 2019
Debt Instrument [Line Items]
Interest rate			8.25%	8.25%	8.25%		8.25%		8.25%
Maturity date				Mar. 15, 2019	Mar. 15, 2019		Mar. 15, 2019		Mar. 15, 2019
Repayment of debt											$ 211,100,000
8.25% Senior Notes Due March 15, 2019 \| Subsequent Event
Debt Instrument [Line Items]
Redemption of outstanding principal amount		$ 21,300,000
7.00% Senior Notes Due February 15, 2022
Debt Instrument [Line Items]
Interest rate			7.00%	7.00%			7.00%		7.00%
Maturity date				Feb. 15, 2022					Feb. 15, 2022
8.60% Senior Notes Due August 15, 2016
Debt Instrument [Line Items]
Interest rate			8.60%				8.60%		8.60%
Maturity date									Aug. 15, 2016
Repayment of debt									$ 219,800,000
Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Revolving credit facility agreement amount			$ 800,000,000				$ 800,000,000		800,000,000
Accrued financing fees			$ 800,000				800,000		$ 800,000
Maturity date									Sep. 30, 2021
Loss on debt extinguishments							1,400,000
Interest rate description									Interest rates on borrowings are equal to, at the Company’s option, a base rate plus a margin ranging from 1.125% to 1.50%, or LIBOR plus a margin ranging from 2.125% to 2.50%, in either case based upon the leverage ratio of RR Donnelley.
Amended and Restated Credit Agreement \| Minimum
Debt Instrument [Line Items]
Facility fee			0.375%
Amended and Restated Credit Agreement \| Maximum
Debt Instrument [Line Items]
Facility fee			0.50%
Credit Agreements
Debt Instrument [Line Items]
Allowable annual dividend payment under credit agreement			$ 60,000,000				60,000,000		$ 60,000,000
LIBOR \| Amended and Restated Credit Agreement \| Minimum
Debt Instrument [Line Items]
Interest rate margin on borrowings									2.125%
LIBOR \| Amended and Restated Credit Agreement \| Maximum
Debt Instrument [Line Items]
Interest rate margin on borrowings									2.50%
Base Rate \| Amended and Restated Credit Agreement \| Minimum
Debt Instrument [Line Items]
Interest rate margin on borrowings									1.125%
Base Rate \| Amended and Restated Credit Agreement \| Maximum
Debt Instrument [Line Items]
Interest rate margin on borrowings									1.50%
Spin-off
Debt Instrument [Line Items]
Accrued financing fees			4,500,000				4,500,000		$ 4,500,000
Spin-off \| Donnelley Financial Solutions, Inc. \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings under the Credit Agreement			0				0		0
Revolving credit facility agreement amount			300,000,000				300,000,000		300,000,000
Spin-off \| LSC Communications, Inc. \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings under the Credit Agreement			0				0		0
Revolving credit facility agreement amount			$ 400,000,000				$ 400,000,000		$ 400,000,000
Spin-off \| 8.250% Senior Notes Due 2024 \| Donnelley Financial Solutions, Inc.
Debt Instrument [Line Items]
Interest rate			8.25%				8.25%		8.25%
Maturity year			2024
Debt instrument, aggregate principal amount			$ 300,000,000				$ 300,000,000		$ 300,000,000
Spin-off \| 8.750% Senior Notes Due 2023 \| LSC Communications, Inc.
Debt Instrument [Line Items]
Interest rate			8.75%				8.75%		8.75%
Maturity year			2023
Debt instrument, aggregate principal amount			$ 450,000,000				$ 450,000,000		$ 450,000,000
Spin-off \| New Credit Agreement \| Term Loan B \| Donnelley Financial Solutions, Inc.
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount			350,000,000				350,000,000		$ 350,000,000
Debt instrument, description of variable rate basis									LIBOR
Spin-off \| New Credit Agreement \| Term Loan B \| LSC Communications, Inc.
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount			$ 375,000,000				$ 375,000,000		$ 375,000,000
Debt instrument, description of variable rate basis									LIBOR
Spin-off \| LIBOR \| New Credit Agreement \| Term Loan B \| Donnelley Financial Solutions, Inc.
Debt Instrument [Line Items]
Additional interest rate margin over LIBOR on borrowings			4.00%
Interest rate margin on borrowings			1.00%
Spin-off \| LIBOR \| New Credit Agreement \| Term Loan B \| LSC Communications, Inc.
Debt Instrument [Line Items]
Additional interest rate margin over LIBOR on borrowings			6.00%
Interest rate margin on borrowings			1.00%