Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Graphic Packaging Holding Company
Net Income Attributable to Graphic Packaging Holding Company	$ 63.7	$ 52.1	$ 103.1	$ 173.8
Other Comprehensive Income, Net of Tax:
Derivative Instruments	5.5		6.8	(4.8)
Pension and Postretirement Benefit Plans	0.8	1.1	114.4	3.2
Currency Translation Adjustment	23.8	(14.6)	(10.9)	(13.3)
Other Comprehensive Income (Loss), Net of Tax	30.1	(13.5)	110.3	(14.9)
Total Comprehensive Income	93.8	38.6	213.4	158.9
Noncontrolling Interest
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	13.6	13.8	26.3	46.6
Other Comprehensive Income (Loss), Net of Tax:
Derivative Instruments	1.1		1.5	(1.4)
Pension and Postretirement Benefit Plans	0.1	0.3	32.5	0.9
Currency Translation Adjustment	4.3	(3.1)	(3.1)	(2.8)
Total Other Comprehensive Income, Net of Tax	5.5	(2.8)	30.9	(3.3)
Total Comprehensive Income	19.1	11.0	57.2	43.3
Redeemable Noncontrolling Interest
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	2.0	4.1	(3.2)	13.8
Other Comprehensive Income (Loss), Net Of Tax
Derivative Instruments	0.0		(0.1)	(0.4)
Pension and Postretirement Benefit Plans	0.0	0.1	9.5	0.3
Currency Translation Adjustment	0.3	(0.9)	(0.5)	(0.9)
Total Other Comprehensive Income (Loss), Net of Tax	0.3	(0.8)	8.9	(1.0)
Total Comprehensive Income	2.3	3.3	5.7	12.8
Total
Net Income (Loss), Including Portion Attributable to Redeemable Noncontrolling Interest	79.3	70.0	126.2	234.2
Other Comprehensive Income (Loss), Net of Tax
Derivative Instruments	6.6		8.2	(6.6)
Pension and Postretirement Benefit Plans	0.9	1.5	156.4	4.4
Currency Translation Adjustment	28.4	(18.6)	(14.5)	(17.0)
Total Other Comprehensive Loss, Net of Tax	35.9	(17.1)	150.1	(19.2)
Total Comprehensive Income	$ 115.2	$ 52.9	$ 276.3	$ 215.0