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Loans and Bonds Payable (Tables)

6 Months Ended

Jun. 30, 2021

Short-term loans [member]

Statement [LineItems]

Summary of Loans and Bonds Payable

		December 31, 2020				June 30, 2021
		NT$				NT$
		(In Millions)				(In Millions)
Unsecured loans
Amount		$	88,559.0			$	139,380.9
Loan content
US$ (in millions)		$	200.0			$	—
EUR (in millions)			2,398.0				4,195.8
Annual interest rate			(0.54)%-0.33	%			(0.25)%-0.01	%
Maturity date			Due by February 2021				Due by September 2021

Bonds payable [member]

Statement [LineItems]

Summary of Loans and Bonds Payable

		December 31, 2020				June 30, 2021
		NT$				NT$
		(In Millions)				(In Millions)
Domestic unsecured bonds		$	173,197.0			$	230,389.0
Overseas unsecured bonds			84,291.0				181,278.5
Less: Discounts on bonds payable			(782.9	)			(1,202.6	)
Less: Current portion			(2,600.0	)			—
		$	254,105.1			$	410,464.9

Bonds payable [member] | Taiwan [member]

Statement [LineItems]

Summary of Loans and Bonds Payable

The Company issued domestic unsecured bonds for the six months ended June 30, 2021, the major terms are as follows:

Issuance		Tranche				Issuance Period		Total Amount NT$ (In Millions)				Coupon Rate				Repayment and Interest Payment
NT$ unsecured bonds
110-1			A			March 2021 to March 2026		$	4,800.0				0.50	%		Bullet repayment; interest payable annually
			B			March 2021 to March 2028			11,400.0				0.55	%		The same as above
			C			March 2021 to March 2031			4,900.0				0.60	%		The same as above
110-2			A			May 2021 to May 2026			5,200.0				0.50	%		The same as above
			B			May 2021 to May 2028			8,400.0				0.58	%		The same as above
			C			May 2021 to May 2031			5,600.0				0.65	%		The same as above

Issuance		Tranche				Issuance Period		Total Amount NT$ (In Millions)				Coupon Rate				Repayment and Interest Payment
NT$ unsecured bonds
110-3			A			June 2021 to June 2026		$	6,900.0				0.52	%		Bullet repayment; interest payable annually
			B			June 2021 to June 2028			7,900.0				0.58	%		The same as above
			C			June 2021 to June 2031			4,900.0				0.65	%		The same as above

Bonds payable [member] | Overseas [member]

Statement [LineItems]

Summary of Loans and Bonds Payable

The major terms of overseas unsecured bonds are as follows:

Issuance Period		Total Amount US$ (In Millions)				Coupon Rate		Repayment and Interest Payment
September 2020 to September 2025		US$	1,000.0			0.75%		Bullet repayment (callable at any time, in whole or in part, at the relevant redemption price according to relevant agreements); interest payable semi-annually
September 2020 to September 2027			750.0			1.00%		The same as above
September 2020 to September 2030			1,250.0			1.375%		The same as above
April 2021 to April 2026			1,100.0			1.25%		The same as above
April 2021 to April 2028			900.0			1.75%		The same as above
April 2021 to April 2031			1,500.0			2.25%		The same as above

Long-term bank loans [member]

Statement [LineItems]

Summary of Loans and Bonds Payable

		December 31, 2020				June 30, 2021
		NT$ (In Millions)				NT$ (In Millions)
Unsecured loans		$	2,000.0			$	3,210.0
Less: Discounts on government grants			(32.4	)			(38.7	)
		$	1,967.6			$	3,171.3
Loan content
Annual interest rate			0.4%				0.4%-0.6%
Maturity date			Due by September 2025				Due by March 2026

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