Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Graphic Packaging Holding Company
Net Income Attributable to Graphic Packaging Holding Company	$ 52.1	$ 63.8	$ 39.4	$ 121.7
Other Comprehensive Income (Loss), Net of Tax
Derivative Instruments	2.3	(4.4)	1.3	(4.8)
Pension and Postretirement Benefit Plans	0.3	0.9	113.6	2.1
Currency Translation Adjustment	11.3	(2.6)	(34.7)	1.3
Other Comprehensive Income (Loss), Net of Tax	13.9	(6.1)	80.2	(1.4)
Total Comprehensive Income	66.0	57.7	119.6	120.3
Noncontrolling Interest
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	14.5	17.2	12.7	32.8
Other Comprehensive Income (Loss), Net of Tax
Derivative Instruments	0.7	(1.3)	0.4	(1.4)
Pension and Postretirement Benefit Plans	0.0	0.4	32.4	0.6
Currency Translation Adjustment	2.6	(0.6)	(7.4)	0.3
Total Other Comprehensive Income, Net of Tax	3.3	(1.5)	25.4	(0.5)
Total Comprehensive Income	17.8	15.7	38.1	32.3
Redeemable Noncontrolling Interest
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	0.1	5.1	(5.2)	9.7
Other Comprehensive Income (Loss), Net Of Tax
Derivative Instruments	0.0	(0.4)	(0.1)	(0.4)
Pension and Postretirement Benefit Plans	0.1	0.1	9.5	0.2
Currency Translation Adjustment	0.1	(0.2)	(0.8)	0.0
Total Other Comprehensive Income (Loss), Net of Tax	0.2	(0.5)	8.6	(0.2)
Total Comprehensive Income	0.3	4.6	3.4	9.5
Total
Net Income (Loss), Including Portion Attributable to Redeemable Noncontrolling Interest	66.7	86.1	46.9	164.2
Other Comprehensive Income (Loss), Net of Tax
Derivative Instruments	3.0	(6.1)	1.6	(6.6)
Pension and Postretirement Benefit Plans	0.4	1.4	155.5	2.9
Currency Translation Adjustment	14.0	(3.4)	(42.9)	1.6
Total Other Comprehensive Loss, Net of Tax	17.4	(8.1)	114.2	(2.1)
Total Comprehensive Income	$ 84.1	$ 78.0	$ 161.1	$ 162.1