Summary of Gross Fair Value Derivative Asset and Liabilities (Details) - USD ($) $ in Millions |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Interest Rate Swap | Economic hedge (non-designated) | Other long-term liabilities | ||
| Derivative [Line Items] | ||
| Derivative Liabilities | $ 1 | $ 1 |
| Interest Rate Swap | Fair value hedge | Other long-term assets | ||
| Derivative [Line Items] | ||
| Derivative Asset | 1 | $ 2 |
| Forward starting swaps | Cash flow hedge | Other long-term liabilities | ||
| Derivative [Line Items] | ||
| Derivative Liabilities | $ 25 |