|
Income Taxes (Details 3) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Dec. 31, 2014
|
| Reconciliation of Effective Income Tax Rate |
|
|
|
| Effective tax rate (as a percent) |
29.50% |
27.40% |
|
| Income tax |
|
|
|
| Net UTB impacting the effective tax rate |
$ 268 |
|
$ 265 |
| Period discussed over which the Company is not able to reasonably estimate the amount by which the liability for unrecognized tax benefits could change as a result of ongoing income tax authority examinations |
12 months |
|
|
| Interest and penalties related to unrecognized tax benefits, expense (benefit) recognized on a gross basis |
2 |
(15) |
|
| Interest and penalties related to unrecognized tax benefits, accrued on a gross basis |
46 |
|
44 |
| Change in effective income tax rate from prior reporting period to current reporting period (as a percent) |
2.10% |
|
|
| Impact of factors that increased the effective tax rate from prior reporting period to current reporting period (as a percent) |
2.10% |
|
|
| Deferred tax assets valuation allowance |
$ 22 |
|
$ 22 |