Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Summary of outstanding debt

The following is a summary of outstanding debt (in millions):

As of December 31	2014		2013
2.875% Senior Notes due May 2026	$	605	$	—
3.50% Senior Notes due September 2015	599		599
5.00% Senior Notes due September 2020	599		599
3.50% Senior Notes due June 2024	597		—
4.60% Senior Notes due June 2044	549		—
8.205% Junior Subordinated Notes due January 2027	521		521
3.125% Senior Notes due May 2016	500		500
4.00% Senior Notes due November 2023	349		349
4.76% Senior Notes due March 2018	322		352
6.25% Senior Notes due September 2040	298		298
4.45% Senior Notes due May 2043	248		248
4.25% Senior Notes due December 2042	196		195
6.25% Senior Notes due July 2014	—		685
Commercial paper	168		—
Other	31		43
Total debt	5,582		4,389
Less short-term and current portion of long-term debt	783		703
Total long-term debt	$	4,799	$	3,686

Repayments of long-term debt

Repayments of total debt are as follows (in millions):

2015	$	783
2016	511
2017	3
2018	323
2019	—
Thereafter	3,962
	$	5,582