Fair Value of Financial Instruments (Details)
$ in Millions |
3 Months Ended |
9 Months Ended |
|
|
Jun. 30, 2017
USD ($)
|
Mar. 31, 2017
USD ($)
|
Jun. 30, 2016
USD ($)
|
Sep. 30, 2017
USD ($)
Debt_Instruments
|
Dec. 31, 2016
USD ($)
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
| Early Repayment of Senior Debt |
|
$ 1,400
|
|
|
|
| Number Of Debt Instruments With Related Interest Rate Swaps | Debt_Instruments |
|
|
|
1
|
|
| Derivative, Notional Amount |
|
|
|
$ 100
|
|
| Assets |
|
|
|
|
|
| Investment maturity range (current) |
|
|
|
1 year
|
|
| Available-for-sale Securities, Debt Maturities, Date |
|
|
|
Sep. 01, 2020
|
|
| Venezuela trade receivables exchanged for promissory note |
$ 375
|
|
$ 200
|
|
|
| Promissory note fair value |
|
|
52
|
$ 116
|
$ 70
|
| Pre-tax loss on promissory note |
$ 262
|
|
$ 148
|
|
|
| Promissory note fair value, current |
|
|
|
92
|
|
| Promissory note fair value, noncurrent |
|
|
|
24
|
|
| Other Current Assets |
|
|
|
|
|
| Assets |
|
|
|
|
|
| Available-for-sale Securities, Current |
|
|
|
66
|
56
|
| Other Assets |
|
|
|
|
|
| Assets |
|
|
|
|
|
| Available-for-sale Securities, Noncurrent |
|
|
|
39
|
36
|
| Long-term debt |
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
| Long-term Debt, Fair Value |
|
|
|
12,251
|
13,565
|
| Carrying value |
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
| Long-term Debt |
|
|
|
10,938
|
12,384
|
| Fair Value, Inputs, Level 1 [Member] |
|
|
|
|
|
| Assets |
|
|
|
|
|
| Fair value of investments and fixed income securities |
|
|
|
0
|
0
|
| Fair Value, Inputs, Level 1 [Member] | Long-term debt |
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
| Long-term Debt, Fair Value |
|
|
|
345
|
753
|
| Level 2 |
|
|
|
|
|
| Assets |
|
|
|
|
|
| Fair value of investments and fixed income securities |
|
|
|
105
|
92
|
| Level 2 | Long-term debt |
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
| Long-term Debt, Fair Value |
|
|
|
11,906
|
12,812
|
| Level 3 |
|
|
|
|
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
|
|
|
|
|
| Long-term Debt, Fair Value |
|
|
|
0
|
0
|
| Assets |
|
|
|
|
|
| Fair value of investments and fixed income securities |
|
|
|
$ 575
|
$ 200
|