TAXES ON INCOME (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Income (loss) from continuing operations - domestic		$ 1,100	$ 810	$ 1,300
Income (loss) from continuing operations - foreign		11	13	19
Deferred income tax expense (benefit)		112	23	19
Current federal income tax expense		231	204	417
Current state and local income tax expense		27	34	59
Current foreign income tax expense		3	3	4
Defered federal income tax expense (benefit)		104	28	27
Deferred state and local income tax expense (benefit)		7	(6)	(6)
Deferred foreign income tax expense (benefit)		1	(1)	(1)
Total	$ (44)	$ 373	$ 262	$ 500
Tax provision at statutory rate		35.00%	35.00%	35.00%
State and local income taxes, net of federal benefit		2.60%	3.20%	2.80%
Impact of foreign operations		0.00%	(0.20%)	(0.30%)
Tax credits		(0.50%)	(0.80%)	(0.40%)
Deferred taxes on gains and losses		(2.70%)	0.00%	0.00%
Adjustments to unrecognized tax positions (the net benefit mainly results from favorable resolution of certain tax contingencies)		(0.40%)	(5.10%)	1.50%
Non-deductible expenses, primarily meals and entertainment expenses		0.50%	0.40%	0.30%
Impact of noncontrolling interests		(1.60%)	(1.70%)	(1.00%)
Impact of equity earnings		0.70%	1.10%	0.60%
Other, net		0.20%	(0.10%)	(0.70%)
Effective tax rate		33.80%	31.80%	37.80%
Accounts receivable reserves current DTA	91	$ 0	$ 91
Liabilities not currently deductible current DTA	78	0	78
Total current deferred tax assets	169	0	169
Accounts receivable reserves	0	95	0
Liabilities not currently deductible non-current DTA	138	202	138
Stock-based compensation	42	49	42
Capitalized R&D expense	3	1	3
Basis differences in investments, joint ventures and subsidiaries	0	(90)	0
Net operating loss carryfowards, net of valuation allowance	165	140	165
Non-current deferred tax liability - depreciation and amortization	(519)	(517)	(519)
Total non-current deferred tax liabilities, net	(171)	(120)	(171)
Total non-current deferred tax assets	33	37	33
Total non-current deferred tax liabilities	204	157	204
Operating loss carryforwards	242	222	242	$ 140
Operating loss carryforwards, valuation allowance			14
Deferred tax assets, valuation allowance	60	54	60	34
Income taxes payable	110	50	110
Prepaid taxes	44	41	44
Unrecognized tax benefits, beginning balance		122	168	199
Additions for tax positions of current year		5	17	11
Additions for tax positions of prior years		5	1	12
Reductions for changes in judgment		(11)	(56)	(23)
Reductions for expirations of statutes of limitations		(3)	(6)	(2)
Reductions for settlements		(27)	(2)	(29)
Unrecognized tax benefits, ending balance	122	91	122	168
Unrecognized tax benefits that would impact effective tax rate		38
Significant change in unrecognized tax benefits is reasonably possible, estimated range of change, upper bound		4
Unrecognized tax Benefits, interest on income taxes expense		0	(1)	$ 3
Unrecognized tax benefits, interest on income taxes accrued	$ 12	9	$ 12
New Accounting Pronouncement, Early Adoption, Effect [Member]
Income Tax Contingency [Line Items]
Total non-current deferred tax liabilities		(142)
Deferred tax assets, net, current		168
Deferred tax assets, net, noncurrent		26
Domestic Country [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards - foreign		268
Foreign Country [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards - foreign		48
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforwards - foreign		1,400
Q² Solutions [Member]
Income Tax Contingency [Line Items]
Deferred income tax expense (benefit)		145
Subsidiaries [Member]
Income Tax Contingency [Line Items]
Deferred income tax expense (benefit)		$ (58)