DESCRIPTION OF BUSINESS AND RELATED MATTERS (Details)					1 Months Ended	6 Months Ended	9 Months Ended
	Jun. 08, 2018 USD ($) shares	May 24, 2018 USD ($)	May 23, 2018 USD ($)	Jan. 08, 2018 USD ($)	Jan. 31, 2018 USD ($)	Jun. 30, 2018 USD ($) segment shares	Sep. 30, 2018 USD ($) segment shares	Dec. 31, 2017 shares
Description Of Business [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount							$ 1,759,201,000
Number of reportable business segments | segment						2	2
Dividends		$ (2.035)		$ (1,499,935,000)			$ (1,499,935,000)
Stock repurchase program authorized amount						$ 2,000,000,000
Payments for Repurchase of Common Stock | shares							13,219,909
Dividends, Paid-in-kind	$ 0.672
Dividends Payable, Date of Record			$ 0.4163
Shares, Outstanding | shares							723,849,057
Common Class A
Description Of Business [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | shares	489,384,523						510,702,726
Common Class B [Member]
Description Of Business [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest | shares						247,684,443	213,146,331	490,086,674
Fees for Executive Services | Affiliates
Description Of Business [Line Items]
Related party transaction, annual fee							$ 30,000,000
ATS Acquisition
Description Of Business [Line Items]
Entities under common control, percentage of voting interst acquired					70.00%
Entities under common control, consideration transferred					$ 1.00
Total Stockholders' Equity
Description Of Business [Line Items]
Dividends							(1,499,935,000)
Paid-in Capital
Description Of Business [Line Items]
Dividends							(963,711,000)
Retained Earnings
Description Of Business [Line Items]
Dividends							$ (536,224,000)