Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Recognition of tax benefit			$ 5
Unamortized deferred financing fees		$ 48	42	$ 48
Loss on deconsolidation of Venezuelan subsidiary		646	0	646	$ 0
Derecognition of the carrying amounts of assets and liabilities included in deconsolidation charge		320	0	320	0
Deconsolidation charge, losses previously reclassified from Accumulated Other Comprehensive Loss		248	0	248	0
Research and development expenditures			388	382	399
Advertising costs			355	385	430
Maximum cash investments with single counterparty			229
Capital lease obligations			3	3	12
Accrued capital expenditures remaining unpaid			240	254
Payments for capital expenditures accrued and unpaid in prior year			254	212
Restricted net assets			735
Depreciation expense for property, plant and equipment			726	697	730
Cost of goods sold			$ 10,972	12,164	13,906
Scenario, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of goods sold	$ 24
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment		56		56
Adjustments for New Accounting Pronouncement | Other (Income) Expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of financing fees				(26)	(16)
Adjustments for New Accounting Pronouncement | Interest Expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of financing fees				26	$ 16
Adjustments for New Accounting Pronouncement | Prepaid Expenses and Other Current Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unamortized deferred financing fees		(15)		(15)
Adjustments for New Accounting Pronouncement | Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unamortized deferred financing fees		(33)		(33)
Adjustments for New Accounting Pronouncement | Long Term Debt and Capital Leases Due Within One Year
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unamortized deferred financing fees		2		2
Adjustments for New Accounting Pronouncement | Long Term Debt and Capital Leases
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unamortized deferred financing fees		46		46
New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Updated 2016-09 | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment		$ 56		$ 56