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Changes in Capital Structure - Schedule of Repurchases Under Share Repurchase Programs (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 4 Months Ended
--- | --- | --- | ---
May 07, 2020 | Mar. 31, 2020 | May 07, 2020
Schedule of Capitalization, Equity [Line Items] |  |  |
Total number of shares purchased (in shares) |  | 4,461,438 |
Subsequent Event |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |
Total number of shares purchased (in shares) | 1,601,345 |  |
Capital Allocation Plan, Open Market Repurchases |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |
Total number of shares purchased (in shares) |  | 4,461,438 |
Amounts paid for shares purchased |  | $ 150 |
Equivalent Shares In Lieu Of Tax Withholding on Equity Compensation Issuances |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |
Total number of shares purchased (in shares) |  | 710,063 |
Average price paid per share (in usd per share) |  | $ 38.24 |
Amounts paid for shares purchased |  | $ 27 |
Capital Allocation Plan |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |
Total number of shares purchased (in shares) |  | 5,171,501 |
Average price paid per share (in usd per share) |  | $ 34.20 |
Amounts paid for shares purchased |  | $ 177 |
Capital Allocation Plan | Subsequent Event |  |  |
Schedule of Capitalization, Equity [Line Items] |  |  |
Total number of shares purchased (in shares) | 1,601,345 |  | 6,772,846
Average price paid per share (in usd per share) |  |  | $ 33.05
Amounts paid for shares purchased | $ 47 |  | $ 224

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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