Discontinued Operations - Schedule of Balances Recorded within Condensed Consolidated Balance Sheets (Detail) - USD ($) $ in Millions		Jun. 30, 2017		Dec. 31, 2016
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accrued liabilities		$ 409.7		$ 541.7
LSC and Donnelley Financial
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accounts receivable		17.5	[1]	78.1
Accounts payable		$ 12.5	[1]	62.6
Accrued liabilities	[2]			$ 78.0

[1] The balance as of June 30, 2017 relates only to Donnelley Financial.

[2] The balance as of December 31, 2016 consisted of the final cash settlement required by a provision in the Separation and Distribution agreement which was paid in April 2017.