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Statements Of Consolidated Cash Flows (Supplemental Disclosures of Cash Flow Information) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Capital expenditures included in current liabilities	$ 155.6	$ 150.5
Dividends declared but not paid	105.7	99.8
Assets recorded for asset retirement obligations	0.0	69.8
Obligation to developer at formation of joint venture	$ 6.0	$ 0.0

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- Definition

Obligation to the Developer

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- Definition

Future cash outflow to pay for purchases of fixed assets that have occurred.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The increase (decrease) during the reporting period in the carrying amount of asset retirement obligations.

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