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Debt
6 Months Ended
Jun. 30, 2021
Debt Disclosure [Abstract]  
Debt DebtIn May 2021, we issued $500 million of 2.30% senior notes due 2031 and $600 million of 4.10% senior notes due 2121.In May 2021, we renewed, amended and restated our accounts receivable securitization program with a maximum borrowing capacity of $400 million and a term that expires in May 2022. We had no amounts outstanding under this program and our available borrowing capacity was $400 million at both June 30, 2021 and December 31, 2020.