DEBT - Commercial Paper (Details) (Commercial Paper, USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
Oct. 31, 2014	Mar. 31, 2015
Commercial Paper
Short-term Debt [Line Items]
Maximum amount outstanding during period	$ 1,000	$ 75

For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, the maximum amount borrowed at any time during the period.

No definition available.

Name:	us-gaap_ShorttermDebtMaximumAmountOutstandingDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration