|
Long-Term Debt (Detail) (USD $)
|
Mar. 31, 2015
|
Dec. 31, 2014
|
| Debt Instrument [Line Items] |
|
|
| $2,000 Credit Facility |
$ 0 |
$ 0 |
| Other |
120,000,000 |
123,000,000 |
| Long-term debt |
4,028,000,000 |
3,781,000,000 |
| Current portion of long-term debt |
(325,000,000) |
(324,000,000) |
| Long-term debt, noncurrent |
3,703,000,000 |
3,457,000,000 |
| Multicurrency revolving credit agreement, aggregate effective borrowings |
2,000,000,000 |
2,000,000,000 |
| Series G, Senior Notes 5.8% Due November 10, 2015 |
|
|
| Debt Instrument [Line Items] |
|
|
| Senior Notes |
315,000,000 |
314,000,000 |
| Debt instrument, stated interest rate |
5.80% |
5.80% |
| Senior Notes, face amount |
316,000,000 |
316,000,000 |
| Senior Notes, effective interest rate |
6.80% |
6.80% |
| Series H, Senior Notes 6.2% Due June 15, 2016 |
|
|
| Debt Instrument [Line Items] |
|
|
| Senior Notes |
289,000,000 |
289,000,000 |
| Debt instrument, stated interest rate |
6.20% |
6.20% |
| Senior Notes, face amount |
289,000,000 |
289,000,000 |
| Senior Notes, effective interest rate |
6.30% |
6.30% |
| Series I, Senior Notes 6.4% Due June 15, 2017 |
|
|
| Debt Instrument [Line Items] |
|
|
| Senior Notes |
293,000,000 |
293,000,000 |
| Debt instrument, stated interest rate |
6.40% |
6.40% |
| Senior Notes, face amount |
293,000,000 |
293,000,000 |
| Senior Notes, effective interest rate |
6.50% |
6.50% |
| Series K, Senior Notes 3.0% Due March 1, 2019 |
|
|
| Debt Instrument [Line Items] |
|
|
| Senior Notes |
597,000,000 |
596,000,000 |
| Debt instrument, stated interest rate |
3.00% |
3.00% |
| Senior Notes, face amount |
600,000,000 |
600,000,000 |
| Senior Notes, effective interest rate |
4.40% |
4.40% |
| Series L, Senior Notes 3.3% Due September 15, 2022 |
|
|
| Debt Instrument [Line Items] |
|
|
| Senior Notes |
349,000,000 |
349,000,000 |
| Debt instrument, stated interest rate |
3.30% |
3.30% |
| Senior Notes, face amount |
350,000,000 |
350,000,000 |
| Senior Notes, effective interest rate |
3.40% |
3.40% |
| Series M Senior Notes 3.4% Due October 15, 2020 |
|
|
| Debt Instrument [Line Items] |
|
|
| Senior Notes |
348,000,000 |
348,000,000 |
| Debt instrument, stated interest rate |
3.40% |
3.40% |
| Senior Notes, face amount |
350,000,000 |
350,000,000 |
| Senior Notes, effective interest rate |
3.60% |
3.60% |
| Series N Senior Notes 3.1% Due October 15, 2021 |
|
|
| Debt Instrument [Line Items] |
|
|
| Senior Notes |
397,000,000 |
397,000,000 |
| Debt instrument, stated interest rate |
3.10% |
3.10% |
| Senior Notes, face amount |
400,000,000 |
400,000,000 |
| Senior Notes, effective interest rate |
3.40% |
3.40% |
| Commercial Paper |
|
|
| Debt Instrument [Line Items] |
|
|
| Commercial paper, average interest rate of 0.5% at March 31, 2015 |
$ 1,320,000,000 |
$ 1,072,000,000 |
| Long-term debt, average interest rate |
0.50% |
|