Financial Instruments and Fair Value Measurements - Summary of Assets and Liabilities Measured At Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021
Assets:
Equity securities	$ 212	$ 280
Fair Value, Measurements, Recurring
Assets:
Equity securities	212	280
Total assets	335	371
Liabilities:
Total liabilities	0	22
Fair Value, Measurements, Recurring | Foreign Currency Derivatives | Cash Flow Hedging
Assets:
Derivative assets	1	0
Fair Value, Measurements, Recurring | Cross Currency Interest Rate Derivatives
Assets:
Derivative assets	79	73
Liabilities:
Derivative liabilities	0	13
Fair Value, Measurements, Recurring | Cross Currency Interest Rate Derivatives | Fair Value Hedging
Assets:
Derivative assets	19	18
Fair Value, Measurements, Recurring | Interest Rate Contract | Cash Flow Hedging
Assets:
Derivative assets	24	0
Liabilities:
Derivative liabilities	0	9
Fair Value, Measurements, Recurring | Level 1
Assets:
Equity securities	109	164
Total assets	109	164
Liabilities:
Total liabilities	0	0
Fair Value, Measurements, Recurring | Level 1 | Foreign Currency Derivatives | Cash Flow Hedging
Assets:
Derivative assets	0	0
Fair Value, Measurements, Recurring | Level 1 | Cross Currency Interest Rate Derivatives
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Level 1 | Cross Currency Interest Rate Derivatives | Fair Value Hedging
Assets:
Derivative assets	0	0
Fair Value, Measurements, Recurring | Level 1 | Interest Rate Contract | Cash Flow Hedging
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Level 2
Assets:
Equity securities	0	0
Total assets	123	91
Liabilities:
Total liabilities	0	22
Fair Value, Measurements, Recurring | Level 2 | Foreign Currency Derivatives | Cash Flow Hedging
Assets:
Derivative assets	1	0
Fair Value, Measurements, Recurring | Level 2 | Cross Currency Interest Rate Derivatives
Assets:
Derivative assets	79	73
Liabilities:
Derivative liabilities	0	13
Fair Value, Measurements, Recurring | Level 2 | Cross Currency Interest Rate Derivatives | Fair Value Hedging
Assets:
Derivative assets	19	18
Fair Value, Measurements, Recurring | Level 2 | Interest Rate Contract | Cash Flow Hedging
Assets:
Derivative assets	24	0
Liabilities:
Derivative liabilities	0	9
Fair Value, Measurements, Recurring | Level 3
Assets:
Equity securities	103	116
Total assets	103	116
Liabilities:
Total liabilities	0	0
Fair Value, Measurements, Recurring | Level 3 | Foreign Currency Derivatives | Cash Flow Hedging
Assets:
Derivative assets	0	0
Fair Value, Measurements, Recurring | Level 3 | Cross Currency Interest Rate Derivatives
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	0	0
Fair Value, Measurements, Recurring | Level 3 | Cross Currency Interest Rate Derivatives | Fair Value Hedging
Assets:
Derivative assets	0	0
Fair Value, Measurements, Recurring | Level 3 | Interest Rate Contract | Cash Flow Hedging
Assets:
Derivative assets	0	0
Liabilities:
Derivative liabilities	$ 0	$ 0