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Debt - Additional Information (Detail)	1 Months Ended		6 Months Ended
	May 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2020 EUR (€)	Mar. 08, 2020 USD ($)
Debt Instrument [Line Items]
Senior notes subject to interest rate adjustment			$ 4,500,000,000
Interest rate change due to downgrade			0.0025
Total interest rate change			0.0050
Annual interest expense			$ 17,000,000
Increase in interest expense, annualized			23,000,000
Deferred gain (loss) on net investment hedge recorded in AOCL, net of tax			$ 3,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 1,250,000,000
Revolving Credit Facility | LIBOR
Debt Instrument [Line Items]
Borrowing rate margin			1.275%
4.20% senior notes due 2026
Debt Instrument [Line Items]
Interest rate			4.20%	4.20%
4.70% senior notes due 2020
Debt Instrument [Line Items]
Debt instrument, face amount			$ 277,000,000
Interest rate			4.70%	4.70%
3.75% senior notes due October 2021
Debt Instrument [Line Items]
Debt instrument, face amount | €				€ 300,000,000
Commercial Paper
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 800,000,000
Senior notes | 4.875% senior notes due May 2025
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500,000,000
Interest rate	4.875%
Proceeds from issuance of senior debt	$ 493,000,000
Redemption price percentage	100.00%
Senior notes | 4.875% senior notes due May 2025 | US Treasury (UST) interest rate
Debt Instrument [Line Items]
Borrowing rate margin	0.50%
Senior notes | 4.20% senior notes due 2026
Debt Instrument [Line Items]
Debt instrument, face amount		$ 15,000,000
Interest rate		4.20%
Repayments of senior debt		$ 15,000,000
Senior notes | 4.70% senior notes due 2020
Debt Instrument [Line Items]
Interest rate			4.70%	4.70%
Senior notes | 3.75% senior notes due October 2021
Debt Instrument [Line Items]
Interest rate			3.75%	3.75%
Receivables facilities
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ 600,000,000

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