Share Repurchase Programs and Dividends - Dividends (Detail) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
Equity [Abstract] | |||||||||||||||
Cash dividends declared (in dollars per share) | $ 0.10 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.1 | $ 0.40 | $ 0.40 | $ 0.40 |
Cash paid | $ 198 | $ 224 | $ 269 |