Segment Information (Summary of Segment Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting [Abstract]
Unrestricted subsidiaries under the Senior Unsecured Notes indenture as percentage of total consolidated assets (less than)	2.00%
Unrestricted subsidiaries under the Senior Unsecured Notes indenture as a percentage of total consolidated net sales (less than)	2.00%
Segment Reporting Information [Line Items]
Products	$ 3,392,300,000	$ 3,529,000,000	$ 3,717,100,000
Services	801,400,000	602,400,000	612,400,000
Operating Income (Loss)	58,000,000	155,300,000	117,300,000
Depreciation and Amortization	230,700,000	232,500,000	277,100,000
Capital Expenditures	96,300,000	85,900,000	106,100,000
Restructuring, impairment and transaction-related charges	103,600,000	60,400,000	73,600,000
Goodwill impairment	0	0	0
United States Print and Related Services
Segment Reporting Information [Line Items]
Products	3,023,800,000	3,156,900,000	3,335,100,000
Services	782,800,000	583,200,000	591,900,000
Operating Income (Loss)	154,000,000	194,300,000	186,100,000
Depreciation and Amortization	209,000,000	210,800,000	252,400,000
Capital Expenditures	69,300,000	73,300,000	88,100,000
Restructuring, impairment and transaction-related charges	37,800,000	53,600,000	59,300,000
International
Segment Reporting Information [Line Items]
Products	368,500,000	372,100,000	382,000,000
Services	18,600,000	19,200,000	20,500,000
Operating Income (Loss)	1,500,000	19,600,000	13,500,000
Depreciation and Amortization	20,800,000	21,000,000	24,100,000
Capital Expenditures	27,000,000	12,600,000	18,000,000
Restructuring, impairment and transaction-related charges	22,200,000	3,300,000	(1,100,000)
Operating Segments
Segment Reporting Information [Line Items]
Products	3,392,300,000	3,529,000,000	3,717,100,000
Services	801,400,000	602,400,000	612,400,000
Operating Income (Loss)	155,500,000	213,900,000	199,600,000
Depreciation and Amortization	229,800,000	231,800,000	276,500,000
Capital Expenditures	96,300,000	85,900,000	106,100,000
Restructuring, impairment and transaction-related charges	60,000,000	56,900,000	58,200,000
Corporate
Segment Reporting Information [Line Items]
Products	0	0	0
Services	0	0	0
Operating Income (Loss)	(97,500,000)	(58,600,000)	(82,300,000)
Depreciation and Amortization	900,000	700,000	600,000
Capital Expenditures	0	0	0
Restructuring, impairment and transaction-related charges	$ 43,600,000	$ 3,500,000	$ 15,400,000