Discontinued Operations - Schedule of Aggregate Carrying Amount of Major Classes of Assets and Liabilities of Discontinued Operations (Detail) $ in Millions	Dec. 31, 2015 USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Current assets held for disposition	$ 1,136.2
Noncurrent assets held for disposition	1,852.1
Current liabilities held for disposition	649.4
Noncurrent liabilities held for disposition	1,542.9
Donnelley Financial Solutions And L S C Communications | Discontinued Operations Spinoff
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Cash and cash equivalents	100.9
Receivables, less allowances for doubtful accounts	763.2
Inventories	239.2
Prepaid expenses and other current assets	32.9
Current assets held for disposition	1,136.2
Property, plant and equipment-net	751.5
Goodwill	657.9
Other intangible assets-net	217.0
Deferred income taxes	85.1
Other noncurrent assets	140.6
Noncurrent assets held for disposition	1,852.1
Total assets held for disposition in the consolidated balance sheets	2,988.3
Accounts payable	328.4
Accrued liabilities	318.3
Short-term and current portion of long-term debt	2.7
Current liabilities held for disposition	649.4
Long-term debt	1,001.5
Pension liabilities	384.2
Other noncurrent liabilities	157.2
Noncurrent liabilities held for disposition	1,542.9
Total liabilities held for disposition in the consolidated balance sheets	$ 2,192.3