Financial Instruments and Fair Value Measurement - Pretax Derivative Accumulated Other Comprehensive Loss (Details) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($)
Cumulative Changes in Derivative Net Gain (Loss) [Roll Forward]
Beginning balance	$ 2,018.5
Ending balance	2,005.3
Graphic Packaging Holding Company, Derivative Instruments
Cumulative Changes in Derivative Net Gain (Loss) [Roll Forward]
Beginning balance	(1.9)
Reclassification to Earnings	(0.6)
Current Period Change in Fair Value	0.0
Ending balance	$ (2.5)

Cumulative Changes in Derivative Net Gain (Loss) [Roll Forward]

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Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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Amount before tax of reclassification adjustments of other comprehensive income (loss).

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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