Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The cash outflow for a borrowing supported by a written promise to pay an obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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DEBT - Notes and Debentures (Details) - USD ($) $ in Millions		12 Months Ended
	Jun. 15, 2015	Dec. 31, 2015	Dec. 31, 2013	Mar. 24, 2015	Dec. 31, 2014	Dec. 31, 2012
Debt
Repayments of Notes Payable		$ 500	$ 200
Debt issued						$ 400
6.625% Notes and Debentures Due 15 April 2018 \| Senior notes and debentures
Debt
Interest rate (as a percent)		6.625%			6.625%
7.75% Notes and Debentures Due 1 August 2029 \| Senior notes and debentures
Debt
Interest rate (as a percent)		7.75%			7.75%
4.8% Notes and Debentures Due 15 June 2015 \| Senior notes and debentures
Debt
Repayments of Notes Payable	$ 500
Interest rate (as a percent)	4.80%				4.80%
4.45% Notes and Debentures Due 1 April 2025 \| Senior notes and debentures
Debt
Debt issued				$ 500
Interest rate (as a percent)		4.45%		4.45%