Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Long-term debt

	As of December 31,
In millions	2017		2016
6.400% Senior Notes due 2022 (1)	$	265	$	266
7.000% Debentures due 2025		46		46
7.150% Debentures due 2027		100		100
6.625% Debentures due 2028		141		141
5.700% Senior Notes due 2034 (2)		21		21
Surplus Notes due 2033 (3)		940		940
Accrued interest		624		506
Debt issuance costs		(16)		(34)
Total	$	2,121	$	1,986
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(1) - Callable on or after August 15, 2006 at par.
(2) - Callable anytime at the greater of par or the present value of the remaining scheduled
payments of principal and interest.
(3) - Contractual interest rate is based on three month LIBOR plus 11.26%.

Aggregate maturity of debt obligations

In millions	2018		2019		2020		2021		2022		Thereafter		Total
Corporate debt	$	-	$	-	$	-	$	-	$	265	$	308	$	573
Surplus Notes due 2033		-		-		-		-		-		940		940
Total debt obligations due	$	-	$	-	$	-	$	-	$	265	$	1,248	$	1,513

Principal payments due under investment agreement obligations

	Principal
In millions	Amount
Maturity date:
2018	$	17
2019		7
2020		35
2021		3
2022		3
Thereafter (through 2037)		328
Total expected principal payments (1)	$	393
Less discount and other adjustments (2)		56
Total	$	337
________________
(1)- Amounts reflect principal due at maturity for investment agreements issued at a discount.
(2)- Includes discounts net of carrying amount adjustments of $61 million, net of accrued interest of $5 million.

Principal payments due under medium-term note obligations based on contractual maturity

	Principal
In millions	Amount
Maturity date:
2018	$	36
2019		61
2020		-
2021		-
2022		121
Thereafter (through 2036)		847
Total expected principal payments (1)	$	1,065
Less discount and other adjustments (2)		300
Total	$	765
________________
(1)- Amounts reflect principal due at maturity for notes issued at a discount.
(2)- Includes discounts net of carrying amount adjustments and embedded derivatives of $240 million, fair value adjustments of $65 million, net of accrued interest of $5 million.

Maturity of VIE notes, by segment

	Principal
In millions	Amount
Maturity date:
2018	$	203
2019		147
2020		485
2021		132
2022		116
Thereafter (through 2052)		1,206
Total	$	2,289	(1)
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(1) - Includes $1.1 billion of VIE notes accounted for at fair value as of December 31, 2017.