Fair Value Measurements (Fair Value Hierarchy Classification) (Details) - USD ($)
$ in Millions |
Sep. 30, 2016 |
Dec. 31, 2015 |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Short-term borrowings |
$ 871
|
$ 926
|
| Portion at Other than Fair Value Measurement [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Long-term receivables |
136
|
122
|
| Customer financing notes receivable |
459
|
403
|
| Short-term borrowings |
871
|
926
|
| Long-term debt (excluding capitalized leases) |
21,774
|
19,476
|
| Long-term liabilities |
427
|
458
|
| Estimate of Fair Value, Fair Value Disclosure [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Long-term receivables |
129
|
107
|
| Customer financing notes receivable |
430
|
403
|
| Short-term borrowings |
871
|
926
|
| Long-term debt (excluding capitalized leases) |
24,938
|
21,198
|
| Long-term liabilities |
397
|
419
|
| Fair Value Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Long-term receivables |
0
|
|
| Customer financing notes receivable |
0
|
|
| Short-term borrowings |
0
|
|
| Long-term debt (excluding capitalized leases) |
0
|
|
| Long-term liabilities |
0
|
|
| Fair Value Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Long-term receivables |
129
|
|
| Customer financing notes receivable |
430
|
|
| Short-term borrowings |
780
|
|
| Long-term debt (excluding capitalized leases) |
24,752
|
|
| Long-term liabilities |
397
|
|
| Fair Value Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Long-term receivables |
0
|
|
| Customer financing notes receivable |
0
|
|
| Short-term borrowings |
91
|
|
| Long-term debt (excluding capitalized leases) |
186
|
|
| Long-term liabilities |
0
|
|
| Fair Value, Measurements, Recurring [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Available-for-sale securities |
1,005
|
951
|
| Derivative Assets |
101
|
101
|
| Derivative Liabilities |
181
|
533
|
| Fair Value, Measurements, Recurring [Member] | Fair Value Level 1 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Available-for-sale securities |
1,005
|
951
|
| Derivative Assets |
0
|
0
|
| Derivative Liabilities |
0
|
0
|
| Fair Value, Measurements, Recurring [Member] | Fair Value Level 2 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Available-for-sale securities |
0
|
0
|
| Derivative Assets |
101
|
101
|
| Derivative Liabilities |
181
|
533
|
| Fair Value, Measurements, Recurring [Member] | Fair Value Level 3 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Available-for-sale securities |
0
|
0
|
| Derivative Assets |
0
|
0
|
| Derivative Liabilities |
$ 0
|
$ 0
|