Share Repurchase Programs and Dividends (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended
Feb. 19, 2020	Jan. 31, 2020	Mar. 31, 2020	Mar. 31, 2019
Equity [Abstract]
Stock repurchased (in shares)			6,378,025	16,947,393
Aggregate stock repurchase price			$ 145	$ 610
Average cost per share (in dollars per share)			$ 22.77
Cash dividends declared per common share (in dollars per share)		$ 0.10	$ 0.10	$ 0.10
Payment of dividends	$ 43

Aggregate dividends declared during the period for each share of common stock outstanding.

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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Total cost of shares repurchased divided by the total number of shares repurchased.

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