Other Comprehensive (Loss) Income Reclassifications Out of AOCI (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of Sales	$ 951.1	$ 915.5	$ 1,868.7		$ 1,813.1
Other Income, Net	4.4	0.8	7.3		2.0
Income before Income Taxes and Equity Income of Unconsolidated Entities	32.1	69.3	90.1		99.3
Income Tax (Expense) Benefit	(11.4)	(28.6)	(35.1)		(41.6)
Net Income Attributable to Graphic Packaging Holding Company	21.2	42.4	56.1		59.6
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Income Attributable to Graphic Packaging Holding Company			12.3
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income before Income Taxes and Equity Income of Unconsolidated Entities			0.9
Income Tax (Expense) Benefit			(0.3)
Net Income Attributable to Graphic Packaging Holding Company			0.6
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Commodity Contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of Sales			0.3
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Foreign Currency Contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Income, Net			(0.9)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Interest Rate Swap Agreements
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest Expense, Net			1.5
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment | Pension Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Prior Service Costs (Credits)			0.3	[1]
Actuarial (Losses) Gains			18.8	[1]
Income before Income Taxes and Equity Income of Unconsolidated Entities			19.1
Income Tax (Expense) Benefit			(7.1)
Net Income Attributable to Graphic Packaging Holding Company			12.0
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment | Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Prior Service Costs (Credits)			(0.1)	[1]
Actuarial (Losses) Gains			(0.5)	[1]
Income before Income Taxes and Equity Income of Unconsolidated Entities			(0.6)
Income Tax (Expense) Benefit			0.3
Net Income Attributable to Graphic Packaging Holding Company			$ (0.3)

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see “Note 6 — Pensions and Other Postretirement Benefits").