Debt and Credit Arrangements (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Long Term Debt

(a)   Long term debt consisted of the following:

	December 31
	2014		2013
	(in millions)
5.75% notes due May 15, 2018	$	600	$	600
6.6% debentures due August 15, 2018		100		100
6.8% debentures due November 15, 2031		200		200
6% notes due May 11, 2037		800		800
6.5% notes due May 15, 2038		600		600
6.375% capital securities due March 29, 2067		1,000		1,000
	$	3,300	$	3,300

Amounts of Long Term Debt due Annually

The amounts of long term debt due annually during the five years subsequent to December 31, 2014 are as follows:

Years Ending December 31	(in millions)
2015	$	—
2016		—
2017		—
2018		700
2019		—