Investments

3 Months Ended

Mar. 31, 2015

Short-term Investments [Abstract]

Investments

INVESTMENTS

Short-Term Investments

The estimated fair values of short-term investments, which approximate cost at March 31, 2015, are shown below by contractual maturity. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to retire our investment without prepayment penalties.

(in millions)	Available-For-Sale
March 31, 2015
Due in one year or less	$	299
Due after one year through three years	902
Due after three years through five years	162
Due after five years	84
Total	$	1,447