Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current Assets:
Cash and Cash Equivalents	$ 148.7	$ 70.5
Receivables, Net	500.2	570.3
Inventories, Net	1,095.9	1,014.4
Other Current Assets	50.1	102.1
Total Current Assets	1,794.9	1,757.3
Property, Plant, and Equipment, Net	3,253.8
Property, Plant and Equipment, Net		3,239.7
Goodwill	1,477.0	1,459.7
Intangible Assets, Net	477.3	523.8
Other Assets	273.7	68.3
Total Assets	7,276.7	7,048.8
Current Liabilities:
Short-Term Debt and Current Portion of Long-Term Debt	50.4	52.0
Accounts Payable	716.1	711.6
Compensation and Employee Benefits	168.4	154.4
Other Accrued Liabilities	216.9	215.9
Total Current Liabilities	1,176.5	1,147.5
Long-Term Debt	2,809.9	2,905.1
Deferred Income Tax Liabilities	27.7	26.5
Accrued Pension and Postretirement Benefits	140.4	107.5
Other Noncurrent Liabilities	265.6	116.9
Commitments (Note 13)	0.0	0.0
MEMBER'S INTEREST
Member's Interest	3,236.8	3,142.6
Accumulated Other Comprehensive Loss	(380.2)	(397.3)
Total Member's Interest	2,856.6	2,745.3
Total Liabilities and Member's Interest	$ 7,276.7	$ 7,048.8

Property, Plant, and Equipment and Finance Lease Right-Of-Use Asset, After Accumulated Depreciation and Amortization

No definition available.

Name:	gpil_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
Namespace Prefix:	gpil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).