SENIOR NOTES PAYABLE AND OTHER DEBT - Senior Notes (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 24, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Jul. 01, 2019	Feb. 28, 2019	Jan. 03, 2019
Debt instruments
Loss on extinguishment of debt, net		$ 4,022		$ (93)	$ 4,427	$ 10,884
Senior notes payable and other debt, gross		$ 10,346,903			10,346,903
Proceeds from issuance of debt					$ 712,934	$ 750,316
5.45% Senior Notes due 2043
Debt instruments
Senior notes redeemed										$ 258,800
Interest rate		5.45%			5.45%					5.45%
Loss on extinguishment of debt, net			$ 400				$ 7,100
Senior notes payable and other debt, gross		$ 0			$ 0		258,750
3.50% Senior Notes due 2024
Debt instruments
Interest rate		3.50%			3.50%				3.50%
Senior notes payable and other debt, gross		$ 400,000			$ 400,000		0		$ 400,000
Public offering price as percent of par									99.88%
4.875% Senior Notes due 2049
Debt instruments
Interest rate		4.875%			4.875%				4.875%
Senior notes payable and other debt, gross		$ 300,000			$ 300,000		0		$ 300,000
Public offering price as percent of par									99.77%
2.65% Senior Notes due 2025
Debt instruments
Issuance date of senior notes	Jun. 24, 2019
2.65% Senior Notes due 2025 | Subsequent Event
Debt instruments
Interest rate								2.65%
Senior notes payable and other debt, gross								$ 450,000
Public offering price as percent of par								99.45%
2.70% Senior Notes due 2020
Debt instruments
Interest rate		2.70%			2.70%
Loss on extinguishment of debt, net		$ 800
Senior notes payable and other debt, gross		$ 500,000			$ 500,000		$ 500,000
2.70% Senior Notes due 2020 | Subsequent Event
Debt instruments
Senior notes redeemed								$ 397,100
Interest rate								2.70%
Public offering price as percent of par								100.37%