Stock Repurchase Programs	3 Months Ended
Mar. 31, 2020
Equity [Abstract]
Stock Repurchase Programs	Stock Repurchase Programs During the three months ended March 31, 2020, we repurchased approximately 8 million shares of our common stock for approximately $800 million at an average cost of $106.15. These shares were purchased in the open market under our stock repurchase programs authorized in April 2017 and July 2018. The July 2018 stock repurchase program became effective during the first quarter of 2020 upon completion of the April 2017 stock repurchase program. As of March 31, 2020, a total of approximately $9.3 billion remained available for future repurchases of our common stock under our July 2018 stock repurchase program.

Stock Repurchase Programs

3 Months Ended

Mar. 31, 2020

During the three months ended March 31, 2020, we repurchased approximately 8 million shares of our common stock for approximately $800 million at an average cost of $106.15. These shares were purchased in the open market under our stock repurchase programs authorized in April 2017 and July 2018. The July 2018 stock repurchase program became effective during the first quarter of 2020 upon completion of the April 2017 stock repurchase program. As of March 31, 2020, a total of approximately $9.3 billion remained available for future repurchases of our common stock under our July 2018 stock repurchase program.