Contingencies - Environmental (Details) $ in Millions		1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 04, 2011	Nov. 30, 2012 item	Sep. 30, 2014 item	Dec. 31, 2016 USD ($) a action	Dec. 31, 1992 entity
Other Current Liabilities And Deferred Taxes And Other Liabilities
Environmental Remediation Costs Recognized [Abstract]
Estimated potential liability for all environmental matters				$ 45
Lowry Landfill Site | Denver And Waste Management Litigation
Environmental Remediation Costs Recognized [Abstract]
Loss Contingency, Number of Defendants | entity					38
Waste Disposal Remediation | Lowry Landfill Site
Environmental Remediation Costs Recognized [Abstract]
Site Contingency, Estimated Additional Cleanup Costs				10
Site Contingency, Estimated Additional Site Costs, Due to Additional Cleanup Costs				1
Waste Disposal Remediation | Lowry Landfill Site | Waste Management
Environmental Remediation Costs Recognized [Abstract]
Project costs to date				$ 140
Number of Years before Projected Completion of Project for Response Cost to Exceed Minimum Amount				3 years
Waste Disposal Remediation | Lowry Landfill Site | Waste Management | Minimum
Environmental Remediation Costs Recognized [Abstract]
Site contingency response cost				$ 319
Waste Disposal Remediation | Lowry Landfill Site | Denver And Waste Management Litigation
Environmental Remediation Costs Recognized [Abstract]
Site Contingency Number Of Actions Entity Actively Involved | action				0
Waste Disposal Remediation | Lower Duwamish Site
Environmental Remediation Costs Recognized [Abstract]
Project costs to date				$ 100
Potential period for data review		1 year
Number of additional potentially responsible parties (PRPs) | item			20
Total site remediation costs expected to cover river bottom area in excess of amount spent to date				$ 342
Area of river bottom to be remediated (in acres) | a				200
Waste Disposal Remediation | Lower Duwamish Site | Minimum
Environmental Remediation Costs Recognized [Abstract]
Site Contingency Number of Potentially Responsible Parties | item		50
Number of industrial companies and governmental entities under review | item		30
Number of PRP groups discussing allocation proposals | item		2
Waste Disposal Remediation | Crown Vantage Landfill Site | Georgia Pacific And International Paper
Environmental Remediation Costs Recognized [Abstract]
Project costs to date				$ 14
Waste Disposal Remediation | Crown Vantage Landfill Site | Georgia Pacific and International Paper Claims
Environmental Remediation Costs Recognized [Abstract]
Amount of liability for site clean up by Rexam to successor (as a percentage)	50.00%
Waste Disposal Remediation | Curtis Paper Superfund Site | Georgia Pacific And International Paper
Environmental Remediation Costs Recognized [Abstract]
Project costs to date				30
Rexam | Waste Disposal Remediation | Crown Vantage Landfill Site | Georgia Pacific And International Paper
Environmental Remediation Costs Recognized [Abstract]
Amount of liability for site clean up costs by Rexam to successor				$ 7