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Long-Term Debt (Narrative) (Details) £ in Millions, $ in Millions, ¥ in Billions	1 Months Ended		3 Months Ended
	Apr. 30, 2024 USD ($)	Apr. 30, 2024 GBP (£)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 05, 2024 USD ($)	Apr. 11, 2024	Mar. 07, 2024 USD ($)	Mar. 07, 2024 JPY (¥)
JPY senior debt $744 million March 2029 to 2059
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount | $								$ 752
Payments of Debt Issuance Costs | $					$ 6
JYP senior debt 7.1 billion March 2029
Debt Instrument, Redemption [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								1.009%	1.009%
JYP senior debt 23.1 billion March 2031
Debt Instrument, Redemption [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								1.415%	1.415%
JYP senior debt 16.7 billion March 2034
Debt Instrument, Redemption [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								1.67%	1.67%
JYP senior debt 11.2 billion March 2039
Debt Instrument, Redemption [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								1.953%	1.953%
JYP senior debt 15.5 billion March 2044
Debt Instrument, Redemption [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								2.195%	2.195%
JYP senior debt 23.5 billion March 2054
Debt Instrument, Redemption [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								2.39%	2.39%
JYP senior debt 15.2 billion March 2059
Debt Instrument, Redemption [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								2.448%	2.448%
JPY senior debt 7.1 billion March 2029
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount									¥ 7.1
JPY senior debt 23.1 billion March 2031
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount									23.1
JPY senior debt 16.7 billion March 2034
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount									16.7
JPY senior debt 11.2 billion March 2039
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount									11.2
JPY senior debt 15.5 billion March 2044
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount									15.5
JPY senior debt 23.5 billion March 2054
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount									23.5
JPY senior debt 15.2 billion March 2059
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount									¥ 15.2
senior debt Sterling 350 million 5.3753% due Dec 2024
Debt Instrument, Redemption [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							5.375%
Early Repayment of Senior Debt	$ 438	£ 350
senior debt $500M 5.30% due December 2034
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount | $						$ 500
Payments of Debt Issuance Costs | $				$ 4
senior debt $750M 5.30% due December 2034
Debt Instrument, Redemption [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			5.30%
senior debt $2500M 5.30% due December 2034
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount | $			$ 250
Payments of Debt Issuance Costs | $			$ 2

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