Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2015

Long-Term Debt [Abstract]

Long-Term Debt

			Year Ended
			December 31, 2015						Interest
									Rate at
	January 1,		Payments		New		December 31,		December 31,
($ in millions)	2015		and Retirements		Borrowings		2015		2015 *
Senior Unsecured Debt	$	9,750	$	(295)	$	6,600	$	16,055	9.00%
Secured Debt		23		(3)		3		23	3.78%
Rural Utilities Service Loan Contracts		8		-		-		8	6.15%
Total Long-Term Debt	$	9,781	$	(298)	$	6,603	$	16,086	8.99%
Less: Debt Issuance Costs		(93)						(196)
Less: Debt Premium		3						2
Less: Current Portion		(298)						(384)
	$	9,393					$	15,508

*  Interest rate includes amortization of debt issuance costs and debt premiums or discounts.  The interest rates at December 31, 2015 represent a weighted average of multiple issuances.

Senior Unsecured Debt

($ in millions)	2015			2014
	Principal		Interest	Principal		Interest
	Outstanding		Rate	Outstanding		Rate
Senior Unsecured Debt Due:
3/15/2015	$	-	-	$	105	6.625%
4/15/2015		-	-		97	7.875%
10/14/2016 *		344	2.805% (Variable)		402	3.045% (Variable)
4/15/2017		607	8.250%		607	8.250%
10/1/2018		583	8.125%		583	8.125%
3/15/2019		434	7.125%		434	7.125%
10/24/2019 **		315	3.805% (Variable)		350	3.545% (Variable)
4/15/2020		1,022	8.500%		1,022	8.500%
9/15/2020		1,000	8.875%		-	-
7/1/2021		500	9.250%		500	9.250%
9/15/2021		775	6.250%		775	6.250%
4/15/2022		500	8.750%		500	8.750%
9/15/2022		2,000	10.500%		-	-
1/15/2023		850	7.125%		850	7.125%
4/15/2024		750	7.625%		750	7.625%
1/15/2025		775	6.875%		775	6.875%
9/15/2025		3,600	11.000%		-	-
11/1/2025		138	7.000%		138	7.000%
8/15/2026		2	6.800%		2	6.800%
1/15/2027		346	7.875%		346	7.875%
8/15/2031		945	9.000%		945	9.000%
10/1/2034		1	7.680%		1	7.680%
7/1/2035		125	7.450%		125	7.450%
10/1/2046		193	7.050%		193	7.050%
		15,805			9,500
Subsidiary Debentures Due:
2/15/2028		200	6.730%		200	6.730%
10/15/2029		50	8.400%		50	8.400%
Total	$	16,055	8.74% ***	$	9,750	7.45% ***

*      Represents borrowings under the 2011 CoBank Credit Agreement, as defined below.

**    Represents borrowings under the 2014 CoBank Credit Agreement, as defined below.

***  Interest rate represents a weighted average of the stated interest rates of multiple issuances.

Debt Maturities by Year

	Principal
($ in millions)	Payments
2016	$	384
2017	$	646
2018	$	620
2019	$	645
2020	$	2,022
Thereafter	$	11,769

Contractual Obligations by Year

($ in millions)	Finance Lease Obligations		Capital Lease Obligations
Year ending December 31:
2016	$	7	$	3
2017		7		3
2018		8		3
2019		8		4
2020		8		4
Thereafter		55		13
Total future payments		93		30
Less: Amounts representing interest		(52)		(7)
Present value of minimum lease payments	$	41	$	23