NOTES PAYABLE - Summary of Notes Payable (Detail) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Notes payable and lease obligations	[1]	$ 6,569	$ 5,778
Finance lease, liability		12	13
Operating lease, liability	[2]	149	0
4.00% senior notes due February 2022
Debt Instrument [Line Items]
Notes payable and lease obligations	[3]	348	348
3.625% senior notes due June 2023
Debt Instrument [Line Items]
Notes payable and lease obligations		698	698
3.625% senior notes due November 2024
Debt Instrument [Line Items]
Notes payable and lease obligations		747	746
3.25% senior notes due March 2025
Debt Instrument [Line Items]
Notes payable and lease obligations		448	447
2.875% senior notes due October 2026
Debt Instrument [Line Items]
Notes payable and lease obligations		298	297
6.90% senior notes due December 2039
Debt Instrument [Line Items]
Notes payable and lease obligations		220	220
6.45% senior notes due August 2040
Debt Instrument [Line Items]
Notes payable and lease obligations		254	254
4.00% senior notes due October 2046
Debt Instrument [Line Items]
Notes payable and lease obligations		394	394
4.750% senior notes due January 2049
Debt Instrument [Line Items]
Notes payable and lease obligations		541	540
.932% senior notes due January 2027
Debt Instrument [Line Items]
Notes payable and lease obligations		545	538
.500% senior notes due December 2029
Debt Instrument [Line Items]
Notes payable and lease obligations		114	0
1.159% senior notes due October 2030
Debt Instrument [Line Items]
Notes payable and lease obligations		266	262
.843% senior notes due December 2031
Debt Instrument [Line Items]
Notes payable and lease obligations		84	0
1.488% senior notes due October 2033
Debt Instrument [Line Items]
Notes payable and lease obligations		138	136
.934% senior notes due December 2034
Debt Instrument [Line Items]
Notes payable and lease obligations		88	0
1.750% senior notes due October 2038
Debt Instrument [Line Items]
Notes payable and lease obligations		81	79
1.122% senior notes due December 2039
Debt Instrument [Line Items]
Notes payable and lease obligations		57	0
2.108% subordinated notes due October 2047
Debt Instrument [Line Items]
Notes payable and lease obligations		543	536
.963% subordinated bonds due April 2049
Debt Instrument [Line Items]
Notes payable and lease obligations		272	0
Yen-denominated loan variable interest rate due September 2026
Debt Instrument [Line Items]
Notes payable and lease obligations		45	45
Yen-denominated loan variable interest rate due September 2029
Debt Instrument [Line Items]
Notes payable and lease obligations		$ 227	$ 225

[1] See Note 1 of the Notes to the Consolidated Financial Statements for the adoption of accounting guidance on January 1, 2019 related to leases.

[2] See Note 1 of the Notes to the Consolidated Financial Statements for the adoption of accounting guidance on January 1, 2019 related to leases.

[3] Redeemed in January 2020