NOTES PAYABLE AND LEASE OBLIGATIONS - Summary of Notes Payable (Detail 2) ¥ in Millions, $ in Millions	Dec. 31, 2021 JPY (¥)	May 31, 2021	Apr. 30, 2021 JPY (¥)	Mar. 31, 2021 JPY (¥)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 JPY (¥)	Sep. 30, 2020 JPY (¥)	Apr. 30, 2020 USD ($)	Apr. 12, 2019 JPY (¥)	Oct. 31, 2018 JPY (¥)	Oct. 31, 2018 USD ($)	Dec. 31, 2017	Oct. 31, 2017 JPY (¥)	Sep. 30, 2017 USD ($)	Jan. 31, 2017 JPY (¥)	Mar. 31, 2016 USD ($)	Nov. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)	Aug. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)
3.625% senior notes paid May 2021
Debt Instrument [Line Items]
Debt instrument, interest rate	3.625%	3.625%				3.625%												3.625%
Debt instrument, principal amount | $																		$ 700
3.625% senior notes due November 2024
Debt Instrument [Line Items]
Debt instrument, interest rate	3.625%					3.625%											3.625%
Debt instrument, principal amount | $																	$ 750
3.25% senior notes due March 2025
Debt Instrument [Line Items]
Debt instrument, interest rate	3.25%					3.25%										3.25%
Debt instrument, principal amount | $																$ 450
1.125% senior notes due March 2026
Debt Instrument [Line Items]
Debt instrument, interest rate	1.125%			1.125%	1.125%	1.125%
Debt instrument, principal amount | $					$ 400
2.875% senior notes due October 2026
Debt Instrument [Line Items]
Debt instrument, interest rate	2.875%					2.875%								2.875%
Debt instrument, principal amount | $														$ 300
3.60% senior notes due April 2030
Debt Instrument [Line Items]
Debt instrument, interest rate	3.60%					3.60%		3.60%
Debt instrument, principal amount | $								$ 1,000
6.90% senior notes due December 2039
Debt Instrument [Line Items]
Debt instrument, interest rate	6.90%					6.90%						6.90%
Debt instrument, principal amount | $																				$ 400
6.45% senior notes due August 2040
Debt Instrument [Line Items]
Debt instrument, interest rate	6.45%					6.45%						6.45%
Debt instrument, principal amount | $																			$ 450
4.00% senior noted due October 2046
Debt Instrument [Line Items]
Debt instrument, interest rate	4.00%					4.00%								4.00%
Debt instrument, principal amount | $														$ 400
4.750% senior notes due January 2049
Debt Instrument [Line Items]
Debt instrument, interest rate	4.75%					4.75%				4.75%	4.75%
Debt instrument, principal amount | $											$ 550
.300% senior notes due September 2025
Debt Instrument [Line Items]
Debt instrument, interest rate	0.30%			0.30%	0.30%
Debt instrument, principal amount	¥ 12,400			¥ 12,400
.932% senior notes due January 2027
Debt Instrument [Line Items]
Debt instrument, interest rate	0.932%					0.932%									0.932%
Debt instrument, principal amount	¥ 60,000					¥ 60,000									¥ 60,000
.500% senior notes due December 2029
Debt Instrument [Line Items]
Debt instrument, interest rate	0.50%					0.50%
Debt instrument, principal amount	¥ 12,600					¥ 12,600
.550% senior notes due March 2030
Debt Instrument [Line Items]
Debt instrument, interest rate	0.55%			0.55%	0.55%
Debt instrument, principal amount	¥ 13,300			¥ 13,300
1.159% senior notes due October 2030
Debt Instrument [Line Items]
Debt instrument, interest rate	1.159%					1.159%				1.159%	1.159%
Debt instrument, principal amount	¥ 29,300					¥ 29,300				¥ 29,300
.633% senior notes due April 2031
Debt Instrument [Line Items]
Debt instrument, interest rate	0.633%		0.633%			0.633%
Debt instrument, principal amount	¥ 30,000		¥ 30,000			¥ 30,000
.843% senior notes due December 2031
Debt Instrument [Line Items]
Debt instrument, interest rate	0.843%					0.843%
Debt instrument, principal amount	¥ 9,300					¥ 9,300
.750% senior notes due March 2032
Debt Instrument [Line Items]
Debt instrument, interest rate	0.75%			0.75%	0.75%	0.75%
Debt instrument, principal amount	¥ 20,700			¥ 20,700		¥ 20,700
.844% senior notes due April 2033
Debt Instrument [Line Items]
Debt instrument, interest rate	0.844%		0.844%			0.844%
Debt instrument, principal amount	¥ 12,000		¥ 12,000			¥ 12,000
1.488% senior notes due October 2033
Debt Instrument [Line Items]
Debt instrument, interest rate	1.488%					1.488%				1.488%	1.488%
Debt instrument, principal amount	¥ 15,200					¥ 15,200				¥ 15,200
.934% senior notes due December 2034
Debt Instrument [Line Items]
Debt instrument, interest rate	0.934%					0.934%
Debt instrument, principal amount	¥ 9,800					¥ 9,800
.830% senior notes due March 2035
Debt Instrument [Line Items]
Debt instrument, interest rate	0.83%			0.83%	0.83%	0.83%
Debt instrument, principal amount	¥ 10,600			¥ 10,600		¥ 10,600
1.039% senior notes due April 2036
Debt Instrument [Line Items]
Debt instrument, interest rate	1.039%		1.039%			1.039%
Debt instrument, principal amount	¥ 10,000		¥ 10,000			¥ 10,000
1.750% senior notes due October 2038
Debt Instrument [Line Items]
Debt instrument, interest rate	1.75%					1.75%				1.75%	1.75%
Debt instrument, principal amount	¥ 8,900					¥ 8,900				¥ 8,900
1.122% senior notes due December 2039
Debt Instrument [Line Items]
Debt instrument, interest rate	1.122%					1.122%
Debt instrument, principal amount	¥ 6,300					¥ 6,300
1.264% senior notes due April 2041
Debt Instrument [Line Items]
Debt instrument, interest rate	1.264%		1.264%			1.264%
Debt instrument, principal amount	¥ 10,000		¥ 10,000			¥ 10,000
2.108% subordinated notes due October 2047
Debt Instrument [Line Items]
Debt instrument, interest rate	2.108%					2.108%							2.108%
Debt instrument, principal amount	¥ 60,000					¥ 60,000							¥ 60,000
.963% subordinated bonds due April 2049
Debt Instrument [Line Items]
Debt instrument, interest rate	0.963%					0.963%			0.963%
Debt instrument, principal amount	¥ 30,000					¥ 30,000			¥ 30,000
1.560% senior notes due April 2051
Debt Instrument [Line Items]
Debt instrument, interest rate	1.56%		1.56%			1.56%
Debt instrument, principal amount	¥ 20,000		¥ 20,000
Yen-denominated loan variable interest rate due September 2026
Debt Instrument [Line Items]
Debt instrument, interest rate	0.41%					0.43%
Debt instrument, principal amount	¥ 5,000					¥ 5,000	¥ 5,000
Yen-denominated loan variable interest rate due September 2029
Debt Instrument [Line Items]
Debt instrument, interest rate	0.56%					0.58%
Debt instrument, principal amount	¥ 25,000					¥ 25,000	¥ 25,000