Divestitures Disclosure of Assets and Liabilities Held for Sale (Details) - USD ($) $ in Millions	Dec. 31, 2017		Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets held for sale	$ 1,377		$ 361
Long-term assets held for sale	0		1,018
Current liabilities held for sale	805		161
Long-term liabilities held for sale	0		8
North American Consumer Packaging [Member] | Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts and notes receivable	143		149
Inventories	185		205
Other current assets	3		7
Current assets held for sale	331		361
Plants, properties and equipment	1,021		987
Deferred charges and other assets	25		31
Long-term assets held for sale	1,046	[1]	1,018
Total Assets Held For Sale	1,377		1,379
Accounts payable	104		110
Accrued payroll and benefits	25		29
Other accrued liabilities	17		22
Current liabilities held for sale	146		161
Long-term debt	651		0
Other liabilities	8		8
Long-term liabilities held for sale	659	[1]	8
Total Liabilities Held for Sale	$ 805		$ 169

[1] As a result of the January 1, 2018 transfer of the North American Consumer Packaging business, these amounts have been included in current assets held for sale of $1.4 billion and current liabilities held for sale of $805 million in the accompanying consolidated balance sheet as of December 31, 2017.