Income Taxes - Components of Current and Noncurrent Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Schedule of Deferred Income Tax Assets and Liabilities [Line Items]
Accounts and notes receivable	$ 55	$ 58
Inventory	70	73
Accrued expenses	295	275
Deferred revenue	987	833
Property, plant and equipment, net	(325)	(322)
Intangible and other assets, net	(569)	(597)
Equity	252	257
Other non-current liabilities	(8)
Other non-current liabilities		27
Tax Credit Carryforwards	281	256
Net operating losses	137	115
Other Comprehensive Loss	133	103
Gross deferred tax assets	2,210	1,997
Gross deferred tax liabilities	(902)	(919)
Valuation allowance	(144)	(126)
Total deferred tax assets	2,066	1,871
Total deferred tax liabilities	$ (902)	$ (919)