Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Long-term debt

Long-term debt consists of the following:

$ in millions		December 31
		2016			2015
Fixed-rate notes and debentures, maturing in	Interest rate
2016	7.75%	$	—		$	107
2018	1.75%	850			1,050
2019	5.05%	500			500
2021	3.50%	700			700
2023	3.25%	1,050			1,050
2026	7.75% - 7.88%	527			527
2027	3.20%	750			—
2031	7.75%	466			466
2040	5.05%	300			300
2043	4.75%	950			950
2045	3.85%	600			600
Credit facilities	1.64%	135			—
Other	Various	273			276
Debt issuance costs		(31		)	(30		)
Total long-term debt		7,070			6,496
Less: current portion		12			110
Long-term debt, net of current portion		$	7,058		$	6,386

Long-term debt maturities

Maturities of long-term debt as of December 31, 2016, are as follows:

$ in millions
Year Ending December 31
2017	$	12
2018	853
2019	567
2020	94
2021	740
Thereafter	4,831
Total principal payments	7,097
Unamortized premium on long-term debt, net of discount	4
Debt issuance costs	(31		)
Total long-term debt	$	7,070