SUPPLEMENTAL CASH FLOW & OTHER DATA (Schedule) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Supplemental Cash Flow Elements [Abstract]
Depreciation expense	$ 75	$ 64	$ 149	$ 124
Amortization expense	25	25	52	50
Depreciation and amortization expense	100	89	201	174
Interest expense	(38)	(42)	(76)	(84)
Interest income	0	1	0	2
Interest expense, net	(38)	(41)	(76)	(82)
Interest paid	46	55	78	103
Income taxes paid	328	2	335	20
Accounts payable associated with capital expenditures	20	48	20	48
Dividends payable	77	75	77	75
Fair value of assets acquired	234	120	234	251
Fair value of liabilities assumed	(3)	0	(3)	(20)
Fair value of net assets acquired	231	120	231	231
Less: Cash acquired	0	0	0	3
Business acquisitions, net of cash acquired	231	120	231	228
Leases:
Leased assets obtained in exchange for new operating lease liabilities	$ 33	$ 47	$ 69	$ 79