Fair Value of Financial Instruments (Details)
$ in Millions |
3 Months Ended |
9 Months Ended |
|
|
Sep. 30, 2016
USD ($)
Debt_Instruments
|
Jun. 30, 2016
USD ($)
|
Sep. 30, 2015
USD ($)
|
Sep. 30, 2016
USD ($)
Debt_Instruments
|
Sep. 30, 2015
USD ($)
|
Dec. 31, 2015
USD ($)
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
|
| Number Of Debt Instruments With Related Interest Rate Swaps | Debt_Instruments |
3
|
|
|
3
|
|
|
| Derivative, Notional Amount |
$ 1,500
|
|
|
$ 1,500
|
|
|
| Assets |
|
|
|
|
|
|
| Fair value of investments and fixed income securities |
$ 96
|
|
|
96
|
|
$ 96
|
| Investment maturity range (current) |
1 year
|
|
|
|
|
|
| Available-for-sale Securities, Debt Maturities, Date |
May 01, 2019
|
|
|
|
|
|
| Venezuela trade receivables exchanged for promissory note |
|
$ 200
|
|
|
|
|
| Pre-tax loss on promissory note |
|
$ 148
|
$ 0
|
148
|
$ 0
|
|
| Promissory note fair value |
$ 60
|
|
|
60
|
|
|
| Promissory note fair value, current |
14
|
|
|
14
|
|
|
| Promissory note fair value, noncurrent |
46
|
|
|
46
|
|
|
| Other Current Assets |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Available-for-sale Securities, Current |
60
|
|
|
60
|
|
63
|
| Other Assets |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Available-for-sale Securities, Noncurrent |
36
|
|
|
36
|
|
33
|
| Long-term debt |
|
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
|
| Long-term Debt, Fair Value |
13,726
|
|
|
13,726
|
|
15,956
|
| Carrying value |
|
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
|
| Long-term Debt |
12,315
|
|
|
12,315
|
|
15,346
|
| Level 1 |
|
|
|
|
|
|
| Assets |
|
|
|
|
|
|
| Fair value of investments and fixed income securities |
0
|
|
|
0
|
|
0
|
| Level 1 | Long-term debt |
|
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
|
| Long-term Debt, Fair Value |
783
|
|
|
783
|
|
1,009
|
| Level 2 | Long-term debt |
|
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
|
| Long-term Debt, Fair Value |
12,943
|
|
|
12,943
|
|
14,947
|
| Level 3 |
|
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
|
| Long-term Debt, Fair Value |
0
|
|
|
0
|
|
0
|
| Assets |
|
|
|
|
|
|
| Fair value of investments and fixed income securities |
$ 0
|
|
|
$ 0
|
|
$ 0
|