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Common Stock	3 Months Ended
Common Stock	Mar. 31, 2021
Equity [Abstract]
Common Stock	Common Stock During the first three months of 2021, the Company repurchased 1.0 million shares of its common stock for $119 million, of which approximately $112 million was paid in the first quarter of 2021. In November 2019, the Board of Directors of the Company authorized the Company to repurchase up to $2.5 billion in shares of the Company's common stock, which superseded any prior authorizations. As of March 31, 2021, the Company remained authorized to repurchase up to approximately $2.3 billion in shares of its common stock. There is no time limit on the authorization. During the first three months of 2020 there were no repurchases of the Company's common stock. The Company issued approximately 2.0 million and 2.3 million shares related to stock compensation and employee stock purchase plans during the first three months of 2021 and 2020, respectively.