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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

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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 + Details
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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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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