Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2016

Long-Term Debt [Abstract]

Long-Term Debt

				Year ended December 31, 2016
($ in millions)	January 1, 2016		Payments and Retirements		New Borrowings		Debt Assumed		Reclassifications		December 31, 2016		Interest Rate at December 31, 2016*
Senior & Subsidiary
Unsecured Debt	$	16,055	$	(419)	$	401	$	500	$	(637)	$	15,900	9.18%
Senior Secured Debt		-		(426)		1,940		-		637		2,151	3.89%
Secured Subsidiary Debt		-		-		-		100		-		100	8.50%
Secured Debt		23		(4)		-		-		-		19	4.50%
Rural Utilities Service Loan Contracts		8		-		-		-		-		8	6.15%
Total Long-Term Debt	$	16,086	$	(849)	$	2,341	$	600	$	-	$	18,178	8.55%
Less: Debt Issuance Costs		(196)										(209)
Less: Debt Premium (Discount)		2										(46)
Less: Current Portion		(384)										(363)
	$	15,508									$	17,560

*  Interest rate includes amortization of debt issuance costs and debt premiums or discounts.  The interest rates at December 31, 2016 represent a weighted average of multiple issuances.

Senior Unsecured Debt

	2016			2015
	Principal		Interest	Principal		Interest
($ in millions)	Outstanding		Rate	Outstanding		Rate
Senior Unsecured Debt Due:
4/15/2017	$	210	8.250%	$	607	8.250%
10/1/2018		583	8.125%		583	8.125%
3/15/2019		434	7.125%		434	7.125%
4/15/2020		1,169	8.500%		1,022	8.500%
9/15/2020		1,066	8.875%		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		2,188	10.500%		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%		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%
		15,150			15,146
Senior Secured Debt Due:
10/14/2016 (1)		-	-		344	2.805% (Variable)
10/24/2019 (2)		280	4.145% (Variable)		315	3.805% (Variable)
3/31/2021 (3)		1,564	3.270% (Variable)		-
10/12/2021(4)		307	4.145% (Variable)		-
		2,151			659
Subsidiary Debentures Due:
5/15/2027		200	6.750%		-
2/1/2028		300	6.860%		-
2/15/2028		200	6.730%		200	6.730%
10/15/2029		50	8.400%		50	8.400%
11/15/2031		100	8.500%		-
		850			250
Total	$	18,151	8.30% (5)	$	16,055	8.74% (5)

(1)Represents borrowings under the 2011 CoBank Credit Agreement, as defined below, that became secured as of April 1, 2016.

(2)Represents borrowings under the 2014 CoBank Credit Agreement, as defined below, that became secured as of April 1, 2016.

(3)Represents borrowings under the 2015 Credit Agreement, as defined below.

(4)Represents borrowings under the 2016 CoBank Credit Agreement, as defined below.

(5)Interest rate represents a weighted average of the stated interest rates of multiple issuances.

Debt Maturities by Year

	Principal
($ in millions)	Payments
2017	$	363
2018	$	733
2019	$	818
2020	$	2,429
2021	$	2,554
Thereafter	$	11,281

Contractual Obligations by Year

($ in millions)	Finance Lease Obligations		Capital Lease Obligations
Year ending December 31:
2017	$	9	$	39
2018		9		37
2019		9		26
2020		9		15
2021		9		9
Thereafter		60		21
Total future payments		105		147
Less: Amounts representing interest		(57)		(18)
Present value of minimum lease payments	$	48	$	129