Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net Sales	$ 1,024.9	$ 1,070.0	$ 1,057.1	$ 1,008.2	$ 1,001.1	$ 1,050.0	$ 1,116.7	$ 1,072.7	$ 4,160.2	$ 4,240.5	$ 4,478.1
Cost of Sales									3,371.1	3,453.3	3,752.5
Selling, General and Administrative									347.7	365.5	384.3
Other Income, Net									(7.7)	(3.7)	(13.4)
Restructuring and Other Special Charges, Net	7.9	8.0	3.9	2.2	11.9	6.8	171.1	7.8	22.0	197.6	13.1
Income from Operations	101.6	110.0	110.2	105.3	88.7	112.3	(52.9)	79.7	427.1	227.8	341.6
Interest Expense, Net									(67.8)	(80.7)	(101.9)
Loss on Modification or Extinguishment of Debt									0.0	(14.4)	(27.1)
Income before Income Taxes and Equity Income of Unconsolidated Entities									359.3	132.7	212.6
Income Tax Expense									(130.4)	(45.4)	(67.4)
Income before Equity Income of Unconsolidated Entities									228.9	87.3	145.2
Equity Income of Unconsolidated Entities									1.2	1.7	1.5
Net Income	$ 57.2	$ 60.2	$ 57.6	$ 55.1	41.5	53.0	(40.3)	34.8	230.1	89.0	146.7
Net Loss (Income) Attributable to Noncontrolling Interests									0.0	0.7	(0.1)
Net Income Attributable to Graphic Packaging Holding Company					$ 41.5	$ 53.0	$ (40.0)	$ 35.2	$ 230.1	$ 89.7	$ 146.6
Net Income Per Share Attributable to Graphic Packaging Holding Company - Basic (in dollars per share)	$ 0.17	$ 0.18	$ 0.17	$ 0.17	$ 0.13	$ 0.16	$ (0.12)	$ 0.11	$ 0.70	$ 0.27	$ 0.42
Net Income Per Share Attributable to Graphic Packaging Holding Company - Diluted (in dollars per share)	$ 0.17	$ 0.18	$ 0.17	$ 0.17	$ 0.13	$ 0.16	$ (0.12)	$ 0.11	$ 0.70	$ 0.27	$ 0.42