Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount (premium).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28567-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 3: 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 4: 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=64930785&loc=d3e28551-108399

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

Name:	us-gaap_LongTermDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

+ References

+ Details

Name:	us-gaap_LongTermDebtPercentageBearingVariableInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

LONG-TERM DEBT - SCHEDULE (Details) - USD ($) $ in Millions	Dec. 31, 2016	Nov. 30, 2016	Jun. 30, 2016	May 31, 2016	Apr. 30, 2016	Feb. 29, 2016	Dec. 31, 2015	Jun. 30, 2015
Long-term debt
Long-term debt, gross	$ 9,907						$ 8,357
Unamortized discount, net	(36)						(24)
Debt issuance costs	(52)						(28)
Current maturities							(1,450)
Total long-term debt	9,819						6,855
1.50% senior notes due 2018
Long-term debt
Long-term debt, gross	$ 500						$ 500
Debt instrument interest rate stated percentage	1.50%						1.50%
9.25% senior debentures due 2019
Long-term debt
Long-term debt, gross	$ 116						$ 116
Debt instrument interest rate stated percentage	9.25%						9.25%
4.10% senior notes due 2021
Long-term debt
Long-term debt, gross	$ 1,249						$ 1,249
Debt instrument interest rate stated percentage	4.10%						4.10%
3.125% senior notes due 2022
Long-term debt
Long-term debt, gross	$ 813						$ 813
Debt instrument interest rate stated percentage	3.125%						3.125%
2.60% senior notes due 2022
Long-term debt
Long-term debt, gross	$ 400
Debt instrument interest rate stated percentage	2.60%				2.60%
2.70% senior notes due 2023
Long-term debt
Long-term debt, gross	$ 1,191						$ 1,191
Debt instrument interest rate stated percentage	2.70%						2.70%
8.75% medium-term notes due 2023
Long-term debt
Long-term debt, gross	$ 22						$ 22
Debt instrument interest rate stated percentage	8.75%						8.75%
3.50% senior unsecured notes due 2025
Long-term debt
Long-term debt, gross	$ 750						$ 750
Debt instrument interest rate stated percentage	3.50%						3.50%	3.50%
3.40% senior notes due 2026
Long-term debt
Long-term debt, gross	$ 1,150
Debt instrument interest rate stated percentage	3.40%				3.40%
3.00% senior notes due 2027
Long-term debt
Long-term debt, gross	$ 750
Debt instrument interest rate stated percentage	3.00%	3.00%
7.20% senior debentures due 2028
Long-term debt
Long-term debt, gross	$ 82						$ 82
Debt instrument interest rate stated percentage	7.20%						7.20%
8.45% senior notes due 2029
Long-term debt
Long-term debt, gross	$ 116						$ 116
Debt instrument interest rate stated percentage	8.45%						8.45%
4.625% senior unsecured notes due 2045
Long-term debt
Long-term debt, gross	$ 750						$ 750
Debt instrument interest rate stated percentage	4.625%						4.625%	4.625%
4.40% senior notes due 2046
Long-term debt
Long-term debt, gross	$ 1,200
Debt instrument interest rate stated percentage	4.40%				4.40%
4.10% senior notes due 2047
Long-term debt
Long-term debt, gross	$ 750
Debt instrument interest rate stated percentage	4.10%	4.10%
2.50% senior notes due 2016
Long-term debt
Long-term debt, gross							$ 700
Debt instrument interest rate stated percentage						2.50%	2.50%
4.125% senior notes due 2016
Long-term debt
Long-term debt, gross							$ 750
Debt instrument interest rate stated percentage			4.125%				4.125%
1.75% senior notes due 2017
Long-term debt
Long-term debt, gross							$ 1,250
Debt instrument interest rate stated percentage				1.75%			1.75%
Variable rate bonds due 2030 (0.9% and 0.15% as of December 31, 2016 and 2015, respectively )
Long-term debt
Variable interest rate (as a percent)	0.90%						0.15%
Long-term debt, gross	$ 68						$ 68