Debt (Tables)

3 Months Ended

Mar. 31, 2015

Debt [Abstract]

Unsecured Fixed Rate Debt Securities Issued Under Current Shelf Registration

During the three months ended March 31, 2015, we issued the following unsecured, fixed-rate debt securities under our prior shelf registration:

Date	Description of Securities
January 29, 2015	$250 million of 1.80% Notes due February 1, 2020
	$450 million of 3.375% Notes due February 1, 2035
	$450 million of 3.875% Notes due February 1, 2055