Short-Term Borrowings and Long-Term Debt - Outstanding Short Term Borrowings and Long Term Debt (Details) - USD ($)	3 Months Ended
	Jun. 30, 2021	May 13, 2021	Feb. 02, 2021	Dec. 31, 2020	Jun. 05, 2020	Jan. 31, 2015
Debt Outstanding [Line Items]
Short-term borrowings	$ 34,000,000			$ 21,000,000
Long-term debt	$ 1,834,000,000			844,000,000
Senior Notes | 3.50% Senior Notes
Debt Outstanding [Line Items]
Maturity Date	Jan. 29, 2025
Principal value at period end	$ 350,000,000					$ 350,000,000
Long-term debt	$ 349,000,000			$ 349,000,000
Interest rate on senior notes	3.50%			3.50%		3.50%
Senior Notes | 3.125% Senior Notes
Debt Outstanding [Line Items]
Maturity Date	Jun. 05, 2030
Principal value at period end	$ 500,000,000				$ 500,000,000
Long-term debt	$ 495,000,000			$ 495,000,000
Interest rate on senior notes	3.125%				3.125%
Senior Notes | 1.800% Senior Notes
Debt Outstanding [Line Items]
Maturity Date	Feb. 02, 2031
Principal value at period end			$ 500,000,000
Long-term debt	$ 494,000,000			0
Interest rate on senior notes	1.80%		1.80%
Senior Notes | 2.100% Senior Notes
Debt Outstanding [Line Items]
Maturity Date	May 15, 2028
Principal value at period end		$ 500,000,000	$ 500,000,000
Long-term debt	$ 496,000,000			0
Interest rate on senior notes	2.10%	2.10%
Other short-term borrowings
Debt Outstanding [Line Items]
Principal value at period end	$ 34,000,000
Short-term borrowings	$ 34,000,000			$ 21,000,000