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=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 835
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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))
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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ 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)(2))
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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

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No definition available.

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- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

+ 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
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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

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- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

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- Definition

Amount of cash outflow for the payment of debt classified as other, maturing after one year or the operating cycle, if longer.

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-Publisher FASB
-Name Accounting Standards Codification
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Debt and Capital Lease Obligations, Non-Bank Debt (Details) - USD ($)	1 Months Ended	9 Months Ended
	Oct. 31, 2016	Sep. 30, 2016	Sep. 30, 2015
Issued Debt [Member]
Non-Bank Debt (Textual)
Repayments of non-bank debt		$ 0
Senior Notes [Member]
Non-Bank Debt (Textual)
Proceeds from issuance of senior long-term debt			$ 1,246,000,000
Debt issuance costs			12,000,000
Senior Notes [Member] \| Senior Notes Due in 2026 [Member]
Non-Bank Debt (Textual)
Face amount of long-term debt issuance		$ 1,250,000,000
Interest rate of notes in percentage		3.40%
Maturity date of long-term debt issuance		Sep. 15, 2026
Proceeds from issuance of senior long-term debt		$ 1,246,000,000
Debt issuance costs		$ 10,000,000
Senior Notes [Member] \| Senior Notes Due in June 2017 [Member] \| Subsequent Event [Member]
Non-Bank Debt (Textual)
Interest rate of notes in percentage	6.125%
Maturity date of long-term debt issuance	Jun. 15, 2017
Early repayment of senior debt	$ 778,000,000
Debt instrument, redemption price, percentage of principal amount redeemed	103.70%
Senior Notes [Member] \| Senior Notes Due in October 2017 [Member] \| Subsequent Event [Member]
Non-Bank Debt (Textual)
Interest rate of notes in percentage	7.20%
Maturity date of long-term debt issuance	Oct. 15, 2017
Early repayment of senior debt	$ 213,000,000
Debt instrument, redemption price, percentage of principal amount redeemed	106.27%
Senior Notes [Member] \| Senior Notes Due in 2025 [Member]
Non-Bank Debt (Textual)
Face amount of long-term debt issuance			$ 600,000,000
Interest rate of notes in percentage			3.65%
Maturity date of long-term debt issuance			Mar. 15, 2025
Senior Notes [Member] \| Senior Notes Due in 2045 [Member]
Non-Bank Debt (Textual)
Face amount of long-term debt issuance			$ 650,000,000
Interest rate of notes in percentage			4.90%
Maturity date of long-term debt issuance			Mar. 15, 2045
Senior Notes [Member] \| Senior Notes Due In 2015 [Member]
Non-Bank Debt (Textual)
Interest rate of notes in percentage			4.50%
Debt repayments			$ 400,000,000
Debentures [Member] \| Debenture Due In 2015 [Member]
Non-Bank Debt (Textual)
Interest rate of notes in percentage			8.75%
Debt repayments			$ 75,000,000