Debt - Summary of Total Outstanding Borrowings (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Short-Term Debt:
Total Short-Term Borrowings	$ 40	$ 40
Long-Term Debt:
Total Long-Term Borrowings	290	300
Term Loan
Short-Term Debt:
Total Short-Term Borrowings	40
Long-Term Debt:
Total Long-Term Borrowings	$ 290