Fair Value Measurements and Financial Instruments (Details 5) $ in Millions	Dec. 31, 2015 USD ($)
Other Current Assets [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Current	$ 41
Other Assets [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Noncurrent	20
Assets [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	61
Held-to-maturity Securities, Fair Value	$ 77

Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle.

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