Earnings Per Share and Certain Related Information - Share Repurchases (Details) - USD ($)	Jan. 17, 2019	Jan. 16, 2020
Earnings Per Share Reconciliation [Abstract]
Amount authorized to be repurchased	$ 1,000,000,000.0	$ 1,000,000,000.0
Average Price Per Share (in dollars per share)	$ 79.93
Shares Repurchased (in shares)	3,576,104
Total Shares Retired (in shares)	3,576,104

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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